ti RINTERS &#? UBLISHERS ? | | BENGAL PLANT A LIST OF THE PHANEROGAMS, FERNS AND FERN-ALLIES INDIGENOUS TO, OR - COMMONLY CULTIVATED IN, THE LOWER PROVINCES AND ee WITH DEFINITIONS OF THE NATURAL ORDERS AND GENERA, AND KEYS TO THE GENERA AND SPECIES stl es yt Bengal Planis. oS! 5 aa Forest Tracts #=: 82 E. of Greenwich. 84 86 88 90 92 —————————— Scale of English Miles. bse 100 TO H. H. RISLEY, Ese., C.1-E., Officier @ Académie. My DEAR RIsuey, Wherever my search for the plants of Bengal has led me, I have found myself following your footsteps in the study of the folks that dwell in the Lower Provinces and live in the pages of the Tribes and Castes of Bengal. Will you, then, accept this work as a mark of my appre- ciation of yours, and a token of my warm regard? Yours very sincerely, D. PRAIN. PREFACE. oH Tren years have passed since the suggestion that the writer should prepare a guide to the plants of the provinces under his rule was first made by Sir Caantes Exuxiorr. The work could not, however, be undertaken till the Flora of British India was finished; since then it has occupied the scanty leisure of the writer, who has received much encouragement from Sir Josrpn Hooker, Sir Grorer Kine, and Sir Joan Woopzury to carry it to completion. Its many imperfections—due in some measure to the fact that dies fasti ac feriati have alone been available for its preparation, and that on these it could only receive divided attention—must have been more numerous had not — Sir Gzorce Kine, with a kindness which nothing can repay, read the final proofs. The key to the species of Polygonum was drawn up by the writer’s friend, Captain A. T. Gace. The need for an Appendix is mainly the result of a practical interest in the progress of this work on the part of Mr. J. H. Lace and H. H. Hares, who have communicated records of species unknown to the Lower Provinces when its prepara- tionhegan. The writer is also much indebted to Messrs. West, Nev:man & Co., of London, for the care they have exercised, at so great a distance, in printing its pages. “Cancurre> March, 1903. HANEROGAMIA :— I.—THALAMIFLORE II.—Catycirtorm , III.—Corouurrrore X.—LycopopINEx BM SPENDIX. is I. INTRODUCTION. THE completion of the Flora of British India, which for over @ quarter of a century (1872-97) absorbed much of the attention seventh and last volume of the Flora, Sir Joseph describes it as “a pioneer work which, besides enabling botanists to name with Some accuracy a host of Indian plants, may, I hope, serve two higher purposes: to facilitate the compilation of local Indian One period having ended, a new one must begin. The efforts of Indian botanists have for the past thirty years been largely devoted to the accumulation of material calculated to facilitate the preparation of-the Flora of British India ; they must now be directed to the compilation of smaller works, compact in form and concise in style, dealing with the vegetation of specific areas within that Indian Empire which is served by the Flora. This Empire, in the botanical sense, includes, besides those territories that are under the control of the Government of India, the Island of Ceylon, the Malayan Peninsula, and the Himalayan regions of Nepal and Bhutan. A rather formidable difficulty, however, confronts those who would decide what the limits of the specific areas to be dealt with in such local Floras shall be. Putting aside for the moment the Malayan and the Indo-Chinese possessions of Britain, and neglecting the huge belt of hill-country which extends along the Himalayas from the Hindu Kush to the Mishmi and the Kachin 2 BENGAL PLANTS. ranges, we find within what is more precisely known as India a number of obvious and intelligible natural subdivisions. There is India Deserta—the dry and almost rainless area in Scinde, Rajputana, and the Panjab; there is India Diluvia, with its chief development in the Gangetic plain, comprising much of the territory that constitutes the North-West and the Lower Provinces; there is India Aquosa, the wet forest tract along the western Ghats from Guzerat to Travancore, which receives all the force of the south-west monsoon; there is India Vera, the dry but not desert triangle between the western and the eastern Ghats, with its apex in Tinivelly and its base along the Gangetic plain; there is India Subaquosa, the eastern Ghats and the strip between these and the sea; finally, there is India Littorea, most highly developed in the Sundribun area of the Gangetic delta. In each of these areas the type of vegetation that prevails is more or less dependent on the natural conditions there met with; this type is in consequence more or less distinctive. The obvious treatment is therefore to subdivide India into the regions thus roughly out- lined, and to provide a compact local Flora for each. But it is evident enough, when further consideration is given to the subject, that, though plausible in theory, such a system of delimitation is neither wholly practicable nor altogether expedient. So far as India Deserta and India Aquosa are concerned, the areas are compact and the boundaries definite; it is, however, otherwise with India Diluvia and India Littorea. The vegetation characteristic of the Gangetic plain extends into the valley of the Brahmaputra, and though we may for the moment ignore, because the territory affected is Indo-Chinese, the fact that this flora recurs in the valley of the Irrawaday, we cannot forget that the same, or a very similar, vegetation appears in the alluvial tracts along Indian rivers other than the Ganges. Again, the mangrove forests at the mouths of the Ganges constitute no more than an outlying patch . a flora that characterises every sea-shore from the Mascarenes o Melanesia; this mangrove vegetation, though more extensively Be eed in the Sundribuns than elsewhere in India, is not more distinctive of the Gangetic delta than it is of similar tracts at the mouths of other considerable Indian rivers. Finally, the line of demarcation between India Subaquosa—the tracts along and below the eastern Ghats, and India Vera—the great peninsular ty 1 I 3 I.—INTRODUCTION. 8 table-land, is so much less clearly defined than the corresponding line between this table-land and the country along and below the western Ghats, that the two have to be dealt with as an organic whole. When so treated the two together form an area that, in its extent, is out of all proportion to any of the other subdivisions indicated. If what has been said indicates that the adoption of natural areas is hardly practicable, it is easier still to show that this coincident with the natural characteristics of its provinces, as these are reflected in the acter pln The theoretical advantage of dealing with even & compact natural area is thus usually over- den who would wish to study the Madras vegetation, a iA these natural areas be adopted, have at hand two works: dealing with India Aquosa or, as an eminent Indian botanist ae sed to name it, Malabaria; and a second dealing with the Seroins India Subaquosa and India Vera, for which area the same authority has proposed the name Coromandelia. The inhabitant of the Bombay Presidency must possess both these works, and in addition that which treats of India Deserta. The district officer in the North-West Provinces, besides providing himself with a work dealing with the vegetation of the Gangetic plain, should have also at hand at least that which refers to Coromandelia. Finally, in the Lower Provinces, with which we are now more immediately concerned, anyone stationed in Chota Nagpur must the iataeal vegetation of the Sundribuns; while anyone pel to Chittagong must consult a treatise dealing with the vegetation of Indo-China, whereof Chittagong forms geographically, though not politically, an integral part. If the public interest is to be con- sulted, it is clear that a system of delimitation other than the obviously natural one is essential in deciding what are to be the limits of the areas treated in our Indian local floras; and the best 4 BENGAL PLANTS. system to adopt, because the most practicable, must be one that is based on a frank recognition of existing political frontiers, no matter how unscientific these may be. Now and again, however, it may be found possible, and indeed advisable, to effect a com- promise, at least in matters of detail, between these political frontiers and the boundary lines indicated by the natural facts of distribution. n the case of the Lower Provinces—for the use of whose inhabitants the present work is designed—a compromise of this kind seems particularly desirable. Here are included the plants of Bengal, Behar, and Tirhut, or those of the eastern half of the Gangetic plain, and those of the Sundribuns or the Gangetic delta. Besides these, however, the work includes not only the plants of Chota Nagpur and of Orissa, which are almost wholly character- istic of Coromandelia, but those of Tippera and Chittagong, which are Indo-Chinese rather than Indian, With the exception of a single district the work deals with the whole of the territories that go to form the Lieutenant-Governorship of Bengal, irrespective of the natural areas completely or partially included in its various provinces. The excluded district is that of Darjeeling, which, save as regards the submontane subdivision of Siliguri, is wholly Himalayan, and, from an elevation of 1500 feet upwards, possesses of any other two districts. To include in our Bengal list the plants of the Darjeeling district that are distinctly Himalayan — would necessitate a larger volume, while the increase in bulk would confer no corresponding benefit on, indeed it might con- ceivably prove a hindrance to, some of those who are likely to use it. It seems preferable, therefore, to prepare a separate list of the plants of the Darjeeling district. If it be objected that the course now followed involves the exclusion from the Bengal list of the plants of the Sikkim Terai, which naturally forms part of the northern extension of the Bengal plain, the answer is that the corresponding tract to the east of the River Tista, known as the Duars, is within the area here discussed, so that no species foun in any part of Bengal is likely to be omitted from the list. If it be further objected that the inclusion of the plants of the Terai and of the lower hills and valleys of Sikkim in a subsequent Darjeeling I.—_INTRODUCTION. 5 list will involve, ipso facto, the repetition of a considerable number of species already dealt with in the Bengal list, the answer is that this will ensure that no species shall drop out of both lists, a con- tingency that might easily occur in the case of any species found only on or near the arbitrary boundary line which must otherwise be drawn between the one area and the other. When the question of boundary delimitation has been satisfac- torily gestions fe compiler of a local Flora finds himself face to w and almost equally formidable difficulty. collections on = ebiah the Flora of British India is based have been sufficiently extensive to permit of a general review of the vegetation of the Indian Empire, and are ample enough to allow of a special study of the characteristic features presented by the various natural subordinate areas. It is, however, found, when a definite tract is examined in detail, that we possess, as a rule, too limited a knowledge of its vegetation to admit of the compilation of a complete and reliable account of its flora. In the case of the Lower Provinces, while it may be assumed that our knowledge of the plants of the Eatigesic Plain, and perhaps also of the Sundribuns, is fairly complete, and may even be taken for granted that, though we do not know all, we know the majority of the species of Behar, Chota Nagpur, and Chittagong, it is certain that our knowledge of the flora of Northern Tirhut and of that portion of North Bengal which constitutes the Duars leaves much to be desired, and that of the vegetation of the hilly portions of Tippera and Orissa we know no more than is necessary to enable us to appreciate our ignorance. The time for the preparation of a complete Local Flora of the Lower Provinces has not yet come; much special work is still called for in many of the more outlying districts. Yet something must be done, if the attention and interest of those capable of rendering the necessary assistance is to be invoked. What under the cir- cumstances seems the best measure to adopt is toi issue a i list or census of the plants within our area. This list is based on of such a list goes a very short way end assisting those inter- B 6 BENGAL -PLANTS. ested in the Bengal Flora, this information is supplemented by references to Roxburgh’s Flora Indica and Hooker’s Flora of British India, where descriptions of the majority of the species are to be found, and to Watt’s Dictionary of Economic Products, where such of them as are useful are enumerated. Having regard, however, to the fact that the only one of these works, Roxburgh’s ‘a Indica, which can, by reason of its size, be conveniently used in the field, besides being the oldest, and on that account the least complete, does not cover the whole of the area under review, it has been considered advisable to provide, for field-use, definitions of the natural orders and genera to which our species belong, with a series of keys a to assist the student in referring any plant to its order and gen Knowing, further, the difficulty often a by the Vicidindl in using any “natural” system of ion, an attempt has been made, by the employment of rn now generally discarded, but by no means therefore despicable, ‘artificial’ sexual system, to provide an alternative route to his where a genus contains more than one species, to facilitate their determination by providing keys to all the species under the various genera. Beyond this it does not, for the moment, appear advisable to go. The assistance that it is hoped many of those who may use the present work shall be willing to give must be awaited before an attempt can be made to issue what should aim i at being a complete Local Flora, giving succinct botanical descrip- — tions of all the species that occur within the limits of the Lower Provinces and Chittagon 8: The inclusion in this list of cultivated plants, exotic so far as the a Lower Provinces are concerned, calls for some explanation. The — selection—for it is not contended that every exotic species to be — found in gardens in Bengal is here referred to—has been governed by the principle that it is advisable to include any species that is — of economic interest, whether for its fruit, its seed, or its timate 3 . or for the dye, tan, oil, fibre, or drug it may yield. As regards plants whose interest is purely esthetic, it has, on the other hand, been deemed inadvisable to encumber the list with species that are to be found only in the gardens of European residents or in those of native noblemen and gentlemen of means and taste. An I.—INTRODUCTION. 7 endeavour has therefore been made to limit the references to such species of this class as are commonly planted in village gardens, or are to be found in the neighbourhood of temples and shrines. e method adopted has, doubtless, sometimes led to the mention of species that, on the eclectic principle stated above, might have been omitted; and has in other cases failed in the direction of as it does,—with the exception of the district of Darjeeling, or nae nae Me riti Governor of B comprising the north-eastern portion of India proper, and lying between long. 84° and 93° E., lat. 22° and 27° N. The region is bounded throughout on its northern border by the lower spurs of the Himalayas. Its western boundaries are, approximately, the Gandak and the Son rivers, streams that find their way into the Ganges near the eighty-fifth meridian—the former from Nepal to the north, the latter from the highlands of Central India to the south. Its southern boundaries are, in the western half, approxi- mately the river Mahanadi, which flows from Central India east- ward to the Bay of Bengal; in the eastern half the Bay of Bengal itself. The eastern side is much more irregular ; its boundaries are, in the northern third the river Brahmaputra; thereafter, more to the east as well as to the south, the river Megna; in the southern half and, still more to the east, the Lushai Hills, which are the northward prolongation of the Yomah of Arracan. A line roughly coincident with the eighty-seventh meridian, naturally marked to the north of the Ganges by the river Kosi and to the south of the Ganges by the eastern base of the Chota Nagpur plateau, divides our area into two fairly equal halves: a western drier and an eastern moister half. This line is also roughly coincident with that which separates the area receiving e y inches of rain annually, from that which receives fifty inches or over. The country to the west of the line is that charac- terized by an annual turf as opposed to the perennial turf of the 8 BENGAL PLANTS. eastern half. In the western half the northern portion is occupied by the eastern extension of the Upper Gangetic plain, constituting to the north of the Ganges the province of Tirhut, to the south of aot river we Se of moles Immediately to the south of ich forms the north-eastern portion of the table- land of Central tndin: south and south-east of Chota Nagpur lie the highlands of Orissa and the level country between these and the sea. The greater portion of the eastern half, from the eighty-seventh to the ninety-second meridian, is occupied by Bengal proper and the Sundribuns, or the Lower Gangetic Plain and the Gangetic Delta; between the ninety-second and ninety-third meridians, to the south of the twenty-sixth parallel and east of the Gangetic Delta, lie the hilly tracts of Tippera and Chittagong, which, though politically included in our area, belong” geographically to Indo-China rather than to India The essential features of wei area therefore are siealal of a great alluvial plain, with the lower spurs of the Himalayas and a strip of submontane forest along its northern border. The longer axis of the first or western half of this plain runs, like the river that dominates it, from west to east; that of its second or eastern half runs at right angles to its fobniee course, from north to south. To — the south of its upper or western half, and to the west of its lower _ or eastern half, this alluvial plain is again bounded by a fringe of — submontane forest, above which rise the escarpments of the plateau of Chota Nagpur. The lower or eastern half of this alluvial plain — extends towards the north-east into the valleys of the Surma and — the Brahmaputra, and is bounded along the south-east border by — the submontane forests, and the hilly tracts beyond them, of 4 Tippera and Chittagong. The submontane forests to the north and to the south-west of this plain are characterized by the existence — of gregarious tracts of Sal, unknown in the forests to the south- east; these latter forests are distinguished by the presence of q Gurjan, unknown in the Subhimalayan forests, or in the s montane forests of Chota Nagpur. q The essential features of the vegetation in the area to the north — of the Ganges, from the Gandak on the west to the Brahmaputra ~ on the east, as we pass from north to south are as follows. First, — a narrow, more or less sloping, gravelly submontane tract along — the base of the Himalaya, covered, except along river-beds, with a — I.—INTRODUCTION. 09 dense forest, the constituent species of which are those that oceur on the lower slopes of the mountains themselves. In existing river-beds only a few tough flexible bushes oceur; along abandoned shingly river-courses the jungle is open and park-like, and the spe- cies are those characteristic of a drier climate than obtains in the forest alongside. This submontane forest is normally succeeded by a belt of swampy land of varying width, covered with long reedy grasses. Further out into the plain the ground as a rule rises somewhat, and, if so high as to be free from inundations, is in waste tracts’usually covered with open jungle—of a bushy character in the western parts, taller and more park-like in the bushes and trees, that form characteristic village shrubberies. In the western parts of this area, where the population is very dense, these village shrubberies are sparingly represented ; further east, the thickets thus formed become as a rule larger and denser ; in places where a population has formerly existed, but has now dis- appeared, the species characteristic of these village shrubberies form dense and sometimes, as on the site of Gour, rather extensive forests. owards the west, the tracts liable to inundation are mainly confined to the banks of the larger rivers, and are there often covered with a jungle of reeds and bushes, largely Tamarisk, with a few trees. As we pass further east, however, the river-courses widen considerably in proportion to their streams, and their beds contain little or no vegetation. The powerful current in the rains sweeps everything away; the shingly or sandy banks are at other seasons too dry to admit of much growth. But old river-beds, marshes, lakes, and such streams as are stagnant or nearly 80, except after heavy rains, are almost as completely covered with vegetation as is the land, while even small rivers with a gentle stream abound with water-plants. The south-eastern portion o North Bengal and that portion of Central Bengal to the east of 10 BENGAL PLANTS. the Bhagirati and the Hughli is of this character; while the same features are continued into Eastern Bengal, where they become exaggerated in the Jhils, a tract wholly under water during the rains, and only partially dry in the cold season. The marshes that in the cold weather stretch away from the river-banks, which stand a few feet above the mean level of the flooded country, are covered with rice. In the rains they form an almost unbroken inland sea of fresh water, dotted with islets of matted floating grasses. The banks themselves carry a fringing fence of brush-wood. As we pass ‘southward from Central Bengal these features become equally exaggerated, but in a different manner, in the area of the Sundri- buns within which the influence of the tides is felt. Here the whole is covered with a dense forest of those trees peculiar to mangrove swamps, and in its western half finally ends at the sea- face in a fence of the shrubs and climbers characteristic of all Indo-Malayan coasts. The eastern half of the Sundribun coast- the fresh-water marshes of the Jhils, is characterized by the presence of many low hills, islets of laterite rising slightly above | the plain of alluvial soil, usually densely forest-clad; the trees at their bases mixed with tall grass, higher up their slopes tangled with heavy creepers. Immediately to the south of the Ganges, from the Son eastward ; to the Bhagirati, the features met with north of the river continue unchanged, though the country as a whole is drier, the cultivation — is less extensive, the bush-jungle more plentiful and closer, the groves of palms near villages larger. As we pass further south the country becomes diversified with numerous bare, low hills, and the intervening jungle becomes more park-like. The level or nearly level plain is much narrower than the corresponding tract to the north of the Ganges, and rapidly passes into a submontane forest altogether similar in character to, and largely identical in com- position with, the corresponding tract at the foot of the Himalayas. This forest extends up the slopes that lead to the edge of the table land of Chota Nagpur. Immediately to the west of the Bhagirati : 2 I.—INTRODUCTION. 11 and the Hughli, in Western Bengal, we find, especially towards the south, an extension of the features that characterize Central engal. The strip of alluvial semi-aquatie rice-land is, however, comparatively narrow, and along the drier parts of West Bengal, from Burdwan to Midnapur up to the eastern edge of the Chota Nagpur plateau, we find repeated the features encountered between the Ganges and the northern slopes of that table-land. These characters are all continued southward into Orissa, where the low- lands are only an extension of Western Bengal, and the highlands are continuous with those of Chota Nagpur. Between the sea an the alluvial portion of Orissa, which is rather extensive, especially in the valley of the Mahanadi, we do not, however, experience that transition to a mangroye-swamp which ¢ ‘acterizes Central Bengal, but meet instead, both to the north and again to the south of the Mahanadi delta, with a series of sand-dunes interposed between the rice-plain and the sea-face. he inner highlands of Orissa are forest-clad like the ghats that lead up to their eastern edge; further west they become bare, or are only sparsely forest-clad. The same is true of the eastern edge of the Chota Nagpur plateau; the northern edge of that plateau and the table-land itself where not under cultivation are sparsely clad with a forest that, like the forests of Orissa, in appearance and largely in composition resembles those of Central India, rather than the forest met with in Northern Bengal. Some of the loftier peaks, both in Chota Nagpur and in Orissa, are sufficiently high to more humid near the top than they are lower down, and therefore possess a few species characteristic of a nearly temperate moist climate. The forest on the isolated hills already alluded to as charac- teristic of the northern portion of the alluvial area to the east of the Brahmapuira and the Megna, where they constitute the such species as are to be found in Chota Nagpur, without occurring under the Himalayas, than it has of such species as are met ith under the Himalayas, but not in Chota Nagpur. There are, how- ever, present in these low hills an appreciable number of species 12 BENGAL PLANTS. that are not found in either of these areas, but that occur in the Garo Hills in Assam or in Tippera, which bounds the deltaic plain on the east, and in Chittagong, which continues, but on a more extensive scale, the features that characterize Tippera é provinces of Tippera and Chittagong are hilly throughout. The northern part of Tippera, where the hills are low, is largely covered with bamboo jungle. The southern portion is, like the higher part of See sa oe with dense, often rather dry forest. The lower part of the Chittagong hills is often covered with brushwood. "pei oT outer hills themselves lie cultivated river-valleys, while between these hills and the sea is a narrow level of rice-land with, towards the north, a muddy sea-face, as in the adjacent eastern portion of the Sundribuns. More to the south a@ series of low flat islands skirt the coast, while the shores have the same mangrove vegetation and sea-fence as the western Sundribuns. For the purposes of this work, the natural boundaries of the four western provinces, Tirhut, Behar, Chota Nagpur, and Orissa, have been left unchanged. As regards the first three, this treatment is as natural as it is convenient. ‘Tirhut, lying from west to east between the Gandak and the Kosi, from north to south between the Subhimalayan forest and the Ganges; and Behar extending from the Son on the west to the old bed of the Bhagirati on the the Upper Gangetic plain. Chota Nagpur, immediately to the south of Behar, similarly constitutes a direct north- -easterly ex- tension of the highlands of Central India. From one point of view it might have been advisable to deal with Tirhut and Behar together. It is, however, more convenient to separate them because Tirhut is wholly flat, whereas Behar is much diversified by hills, outliers from the flanks of the Chota Nagpur plateau. Behar, too, is appreciably drier than Tirhut, and these two circumstances, greater diversity of surface and less humidity, account for the presence in Behar of many species from Bandelkand, and some even from the Panjab, that are absent from Tirhut. Another and, though an accidental, not less important factor in influencing the vegetation of Tirhut is the density of the population. So close, in consequence, is the tilth, that throughout whole dietriets field is conterminous with field, and the cultivated — I.—INTRODUCTION. 13 land abuts so closely on wayside and watercourse as to leave no foothold for those species that form the roadside hedges and fill the weedy waste places so characteristic of Lower Bengal. Even the “171 1 25 s 41 L Pho wees 1 fe £ ¢ i 1, At aw area, are in Tirhut conspicuous by their absence. The result is that, £ f. 41 ‘4 1 mre ie rh] re Sew "ih alr east except for the water-pia. Ze ; the vegetation of Tirhut is chiefly limited to the crops with their concomitant field-weeds; even the latter are often conspicuous by their paucity. To this state of affairs is largely due the fact that our collections from South Tirhut are few and scanty. Of North Tirhut, where our province abuts on the submontane forest, here mostly within the Nepalese frontier, we know very little, the only collections of importance from the region being those of Buchanan- Hamilton, few of whose specimens are in India now, and more recently those of Hieronymus, the latter being altogether from Bettiah, the extreme north-west district of Tirhut. It is to be expected that, if carefully looked for, many of the plants charac- teristic of Gorakhpur, beyond the Gandak to the west, may yet be found in Tirhut. Behar, too, requires systematic re-exploration, for, though there are many Behar plants in the collections of milton, Wallich, and Hooker, and especially in those of Kurz, much probably still remains to be collected. Chota Nagpur has received closer attention than Tirhut and Behar, large and valuable collections having been made there by Hooker, Thomson, Anderson, urz, Clarke, Gamble, and, especially, by Wood, Campbell, and aines. But our knowledge of the Chota Nagpur flora is still far from adequate; much has yet to be done, particularly in the southern and south-western parts of the province. Unlike the other western provinces, Orissa, in place of being a compact natural area, is an exceedingly composite one. The inner highlands form, like those of Chota Nagpur, a plateau with oc- easional higher hills, some of which actually reach subtemperate altitudes. The ghats that lead up to these highlands are con- tinuous to the north with the eastern escarpments of Chota Nagpur, to the south with the Eastern Ghats—those “ mountains of the Cirears,”’ from which, more than a century ago, Roxbargh obtained so many plants, of which he has left excellent drawings, that no one as seen since. The submontane strip below is continuous to the north with the drier part of West Bengal, which has a vegetation in 14 BENGAL PLANTS. appearance and composition like that of Behar. To the south this strip is continued as a belt below the Eastern Ghats that yielded is the line of sand-dunes between the rice-plain and the sea. These province is almost bl The chief collections at our disposal ar some valuable ones made by Gamble, which are, however, only large enough to whet t ppetite and to demonstrate our ignorance ; attempt any natural subdivision. The only obvious alternative, so far as our present knowledge goes, is to annex the Orissa highlands to Chota Nagpur, and treat the lowlands as an integral portion of West Bengal. If we now turn to the three eastern provinces, Chittagong, Tip- both are integral portions of the western, or Assam-Arracan, subdivision of Indo-China. The two are, however, naturally well delimited by the valley of the river Feni, and, if for no other collector Bruce, Hooker and Thomson, Clarke, Wood, and especially Lister and the native collectors of the Caleutta Garden supervised I.—INTRODUCTION. 15 } Joo t} obtained, 2a. gh mae Be | Pate by Dowling. T complete, is nevertheless wr The vegetation of Chittagong may be said to be mainly that characteristic of Arracan, with, how- ever, as might be expected, a considerable admixture of species a of Cachar and Khasia, and with not a few special form Of Tipper era we know even less than we do of Orissa. What we do know of the level and the submontane north-western portion we mainly owe to Clarke. Taken by themselves, these lower tracts might be considered no more than a portion of Eastern Bengal, with an unusual admixture of species characteristic of Silhet. But this Silhet element in the flora is sufficiently vee to make it convenient to deal with this tract, the Comilla district, apart from Be and to treat it in connection with its own highlands. As regards these highlands, we know little beyond what is to be learned from the work of Roxburgh os et name: Hamilton, done eighty to a hundred years ago. n, indeed, appears to be the only botanist who has ane rae hills of ‘‘ Southern Tripura.” Few of Hamilton’s specimens, and none of his Tippera ones, are now in India. Roxburgh’s specimens, too, are gone, but fortunately India has not been robbed of his drawings, a number of which represent interesting and, but for these drawings, still un- known plants from Hill Tippera. What we do know of the vege- tation of these Tippera hills indicates that in the northern parts it is an extension of the flora characteristic of the Bhuban and other ranges of hills in Cachar and South Silhet, outliers of the Lushai range; in the southern parts the flora is a repetition, with variations, of the vegetation of Chittagong. The Lower Gangetic Plain, or Bengal proper, which from the uniiosanity: of its configuration a be expected to oxbilis 1 a Lotin for mity OL so dignewdsat as ce demand further sabdivisions Fortanately, iten examined in detail, the area is found to lend itself naturally to our purpose. That portion of the Gangetic delta nearest to the sea, an intricate system of sea-creeks and half-formed islands, densely clothed with a tidal forest of a purely Malayan type, separates itself spontaneously from the alluvial rice-plain to the north, where the river-banks at least are higher, where tanks can be dug that will retain fresh-water, and where only the larger streams 16 BENGAL PLANTS. are much affected by the tides. This dense forest forms the com- Pact and natural Sundribun province, filled with species to be met nowhere else in our area save along the southern coast of Chitta- Roxburgh, Wallich, Hooker, Thomson, Anderson, Kurz, Gamble, Clarke, have all penetrated the tract. It is, however, to Heinig that we are chiefly indebted for the more complete exploration of this most interesting region ; his collections, assiduously and care- fully made during a succession of seasons, have converted what ten years ago was one of the least known portions of Bengal into a tract almost as thoroughly investigated as the rice-plain itself. Searcely less necessary and natural is the separation of Eastern t there are two dominant and, as it happens, v Separate treatment essential. One of these features is the vege- tation of the Jhils, those inland sheets of fresh-water that are as characteristic of the southern portion of East Bengal as their salt- Marshes and tidal creeks are of the Sundribuns. The other is Supplied by the curious and distinctive vegetation of the laterite Islets that crop through the alluvium in the Mymensingh district of the Dacea division. Our acquaintance with the flora of the Jhils is derived from the labours of Roxburgh, Griffith, Hooker, Clarke, and others; what we know of the Madhopur jungles in Mymensingh we owe entirely to Clarke. Much has yet to be done towards completely investigating these Mymensingh jungles, which M many ways are the most interesting feature of the Lower Gan- Setic Plain. seful, too, is the recognition apart of North Bengal—the ‘ountry that lies from west to east between the Kosi and the Brahmaputra, from south to north between the Ganges and the lower spurs of the Himalaya. Towards the south and south-east, no doubt, this province repeats the essential features of the alluvial Plain of Central and Eastern Bengal, while further to the north it 7S no more than an eastward continuation of the features exhibited by Tirhut. Even here, however, amid much agreement there is ee ee ee ee eS ee eer eee eee i # I,—INTRODUCTION. 17 great dissimilarity; we are now in a land where the turf is uniformly perennial, a circumstance that carries with it more than lies on the surface. The northern portion includes the sub- montane forest belt; in this respect North Bengal. accidentally differs from Tirhut, since along the northern border of that province this forest lies largely within the Nepalese frontier, and so is removed politically from the area with which we have to deal. It is this Subhimalayan forest which supplies the feature that necessitates the separation of North Bengal from the rest of the Lower Gangetic Plain. Our knowledge of the flora of North Bengal, as regards the central portions, we owe chiefly to Kurz, King, and Clarke; the most westerly district, Purnea, has been well explored only by Buchanan-Hamilton, few of whose specimens, unfortunately, are available in India. The submontane forest has been explored by Anderson, King, Kurz, Clarke, and Gamble, but the attention of all save the last-named botanist, and indeed his also in the main has been directed to the Terai, which, for reasons already set forth, it has been necessary to exclude from the scope of this work. The Duars, which are merely an eastward extension across the Tista of the same forest belt, have been, however, oes explored by Gamble, and more fully examined by Hea and by Hai to whose exertions our knowledge of the region is chiefly due. Much, however, yet remains to be done both in the Duars and in Cooch Behar. Central Bengal, the tract to the south and west of the Ganges and Brahmaputra, lying north of the Sundribuns and east of the Bhagirati and Hughli, possesses, as compared with the three Bengal tracts already discussed, the negative feature of being typically representative of the alluvial deltaic rice-plain and nothing more. Except that along the banks of its main streams, so far as these are at all affected by the tides, we find, as a narrow hedge or in scattered patches, some species characteristic of the Sundribuns, and that all abandoned river-beds and ponds are covered with water-plants, the whole country is a semi-aquatie rice-plain. The mounds and embankments thrown up here and there through- out the area are, where not occupied by honses or by age shrubberies. Of this tract, as of the Sundribuns, we possess a knowledge that is probably practically complete. Little or nothing 18 BENGAL PLANTS. has been left by Roxburgh and Carey for succeeding generations of botanists to add; indeed, these careful collectors have left us not a few records of species, found by them in Central Bengal, that no one has met with since. The remaining portion of Bengal proper stretches westward from the Bhagirati and the Hughli to the eastern base of the ur ghats. i i Behar, the eastern ghats of Chota Nagpur, with all the transitions encountered as we pass southward through Behar to the northern edge of the same table-land. e owe to many collectors, but find, growing side by side, a few species characteristic of the Panjab and Rajputana that have managed to find their way through Bandelkand and Behar thus far to the east; and a few, equally characteristic of Coromandel and the Circars, that have succeeded in spreading, through the lowlands of Orissa and Mid- napur, thus far to the north. One of the most interesting members of the latter category is, perhaps, the intrinsically insignificant monotypic genus Spheromorphea. Our acquaintance with the southern portion of this tract is of the slightest; but for some references by Roxburgh to interesting species from the ‘ Midnapur jungles,” it would be altogether blank. Having regard to the composite nature of West Bengal as a botanical province, and to — the fact that its alluvial rice-plain is neither very extensive nor at all distinctive, the province has not been cited in the list under oc collected, to the west of the narrow semi-aquatic rice-plain, in the non-alluvial portion of the province. s The artificial sexual system of classification, of which a sub- E I—INTRODUCTION. 1g sidiary use is here made as an alternative aid in the determination of the genera, is employed, so far as it is used at all, in an absolute fashion. The Se that accompany its employment in botanical works of the early portion of last century have been put aside. In these densities, as here, the primary subdivision is dependent on the number of stamens in the flower. In many obviously natural genera, however, and for that matter in not a few species, the number of stamens is variable. Sometimes this variation in number is the result of what we may term a natural accident, as where, among the smaller and definite numbers, the uniseriate stamens in the flowers of the same plant are found to run from 3-5, 7-10, and the like. More often the variation has an obvious structural explanation, as where the stamens in a species may be 4 or 8, or 5, 10, or 15, according to whether only one, or ore than one series of stamens becomes developed. This type of variation, occasional in species, is much more frequent within the limits of a genus, where, too, another type of variation, rare in individual species, is not uncommon. This is the type that leads to the number of stamens being 4 or 5, 8 or 10, and the like; one species and often a whole section of a genus having tetramerous flowers, whee another type and section may have the flowers pentamerou In works sinacs the artificial system is the only one employed— Roxburgh’s Flora Indica, of which those who are likely to use this work will probably become possessed, is an excellent example bility of these two objects is sufficiently obvious. No system of arrangement could be satisfactory that resulted in the treatment of the same natural genus in more places than one. A decision had therefore to be arrived at, in cases where a genus includes some species with 4 stamens and others with 5, whether the genus as a whole should be placed in the class Tetrandria or the class ge a whatever in the compromises thus called for made for efficiency in the arrangement of the ere correspondingly detracted soe the system as an instrument for the determination of their species. Here we are hampered na no such necessity ; the basis of our arrangement is derived from an independent source—the Genera Plantarum of Bentham and Hooker adopted 20 BENGAL PLANTS. in the Flora of British India. We are therefore at liberty to make fuller use of the artificial system than our predecessors — could as an aid to identification. In this work, therefore, if, as — sometimes happens, a genus contains species with 4 or 5, or 8 or — 10 stamens, it will be found to have been included under all the ; four classes—Tetrandria, Pentandria, Octandria, Decandria— : to which an examination of any individual flower may naturally invite a reference. 4 The secondary subdivision into orders, in treatises like the Flora q Indica, is based on the number of free carpels, or at any rate free _ Styles, in the flower. We have, however, our own “natural” 4 orders, as limited in the Flora Of British India. To deal with — another series of orders would only tend to confusion, and the — character on which these artificial ones are based is only casually _ made use of in the a conan for the genera under the various q these hermaphrodite flowers, it is found that they are referable. : The last of the Linnean classes, the twenty-fourth, is not — given completely, our attention being entirely confined to the — Pteridophyta or Vascular Cryptogams, comprising the Ferns and 4 the Fern-Allies. The arrangement and nomenclature adopted for _ these plants is that used in Hooker and Baker’s Synopsis, and in — Baker’s Fern-Allies, while for the Ferns themselves references are given to the admirable — of the Ferns of British India — and Ceylon by Beddom The following are the aon — used :— F. I.—Roxburgh’s Flora Indie F. B. I.—Hooker’s Flora of British India. E. D.—Watt’s Dictionary of the Economic Products of India. F. I. C.—Beddome’s Ferns of British India and C As regards Roxburgh and Hooker, the references are to volume | and page. As regards Watt’s great work, the references are to — the letter, and to the register number of the particular plant or Z product. In the case of Beddome, whose work is in one volume, the references are to the pages. a Il. ARTIFICIAL GUIDE TO THE GENERA. {Plants with conspicuous flowers Ss aaemcOeaRS :—[p- 22] +Stamens and pistils in the same flowe ] Male and female organs distinct :— ces not united Pa a or below :-— Stamens of equal or nearly equal length :-— 4 amens solitary I. MONANDRIA. ens 2 ... Il. DIANDRIA. Stamens 8 ...........- Ill. TRIANDRIA. Stamens 4 IV. TETRANDRIA. Stamens 5 V. PENTANDRIA. Stamens 6 equal, or if unequal then 3 act np 3 short . HEXANDRIA. Stamens 7 ma poe soe Stamens 8 VIII. OCTANDRIA. Stamens 9 ...... IX. ENNEANDRIA. Stamens 10 or 11 X. DECANDRIA. Stameris 12 or any number between 12 ey 19 I. DODECANDRIA. Stamens 20 or more than 20 :— Stamens 2 long and 2 short........--+++++++ XIV. DIDYNAMIA. Stamens 4 long and 2 short... XV. TETRADYNAMIA. — Stamens united :— nion of stamens occurring in the filamen Stamens in one phalanx or bundle.. os “MONADELPHIA. Stamens in two phalanges ....+.--+---++ XVII. DIADELPHIA. Stamens in three or more plalanges XVII. POLYADELPHIA. Union of stamens eonfined to anthers......XIX. SYNGENESIA. Male organs attached to and standing upon the female XX. GYNANDRIA. c 22 ; BENGAL PLANTS. [Artificial Guide | emt and are in different flowers :—[p. 21] male flowers not mixed with ee ae, flowers :— ois sit female flowers on the same plant......} x. ae unisexual flowers sometimes on the — sometimes on different AMIA. ean ORE proper flowers [p. 21] ............X1V. bis Pronkuiil * The Polygami ti f subdivided oe as the flowers ~ polyg i polyg di It is not a very useful class, h AieatrehitoanA +h various other classes from I. to XX. a that in the following pages are distinguished by an asterisk— , 106*. Kleinhovi are eB tee in the Appenprx. via—will not be found in the body of the work, but | to the Genera.] I,—MONANDRIA. 23 Class I. MONANDRIA. *Perianth double :—[p. aus pei a herbs : subcapitate, enti lobed . 598. Hoppea. Sige 2, — at the apex of a linear style ...... 599. Canscora. Leaves altern: Leaves ob 5 woody shrubs ; fruit a legume ...... 279. Bauhinia. Leaves entir Trees; leaves a seiAhibia a leaf- a and with distinct reticulate secondary venation ; fruit a dru 203. M era. Herbs, rarely shrubs ; leaves ithe large clasping leaf-sheath, and with many parallel nerves passing horizontally or obliquely from a midrib but ee adie secondary venation ; fruit neither a legume nor +Anther 2- oaien go tubular or pereesaiee style slender, embraced below the stigma by the anther; placentas many- . ovuled; embryo central, straight : ai 24 Ovary eae _— ntas 3 parietal; corolla-tube long; stigma turbinate :— Sca ape beret owes lilac 929. Mantisia. Stem leafy; flowers yellow 930. Globba. Ovary 3-celled ; placentas axial :— minodes broad :— Connective not spurred at the base; corollu-tube long, slender :— Filament shor Connective rol crested ; ee —— 1. Kempferia. Connective not crested ; stigma ail . Gastrochilus. Filament long, narrow ; a poo narrow, not rested ; stigma — soasagaeewes 933. Hedychium. Connective spurred a se; corolla-tube funnel- ba shaped; stigma ne the lips ciliate; bracts forming a egies SPike .....eseseeeseeeenerreeeeeewnnene La staminodes small or 0, rarely narrow Soa adnate to the ag ; corolla-tube cylindric :— {Flowers in dense cone-like spikes —{p- 24] Anther-cells divaricate on a short oo filament with or without a petaloid crest ; stigma small subglobose, 24 BENGAL PLANTS. [Artificial Gi id or larger and gibbous behind; spikes almost always. rising direct from rhizome, rarely at apex of a | stem 935. Amomun eee contiguous, parallel :— = Fila: short, connective produced as a narrow on n gm, i subglobose ; spikes usually produced direct from the rhizome, sometimes at apex of a leafy stem 936. Filament forming with the produced connective an semilunar pit ciliate round the spikes usually at ~~ of leafy stem, aa, idle ect from the rhizome 937 {Flowers in racemes or panicles at the top of leafy “a filament long, anther-cells divergent at — ; stig bose [p. 23 [p. 2 inal tube with 5 subsimilar slightly unequal pete sesihidate, the 1-celled anther adnate to one of the sma segments; ovary 3-celled; placentas many-ovuled; sty flattened, stigma terminal, capitate; embryo seg Staminal tube very irregular, 5-6-lobed, 1 or 2 lobe lateral and 1 (the lip) anterior, with 2 or 3 lobes dors which 2 or 1 are hood-like and another bears the anther placentas 1l-ovuled; stigma oblique, dilated or 2-labia embryo ¢ curved :— c Ovary in appearance 1-celled and l-ovuled with 2 am rudimentary empty cells; stem leafy with a termi few-flowered inflorescence and convolute a b: 9 Ovary 3-celled, 3-ovuled :-— Stem leafy with terminal panicled scattered flowers heads of flowers ; bracts and bracteoles persistent 942, Phryn *Perianth single, or obsolete or absent :—[p. 23] to the Genera.] I.--MONANDRIA. 25 Flowers with distinct gamophyllous perianth ; stems perhaps with opposite leaves and no leaf-sheath, or fleshy jointed and lea Leaves distinct, opposite; stems herbaceous; style peers 763. Boerhaavia. Leaves 0; stems fleshy; styles 2 or m Flowers in the axils of scales of a sani cone ; seeds albumi- nous, embryo curv: .783. Arthrocnemum. Flowers sunk in onritied of the joints of a slender cone; seeds without buihioes n, embryo conduplicate .........++ 784. Salicornia. Flowers with mene % pera to lodicules or soe in the eo of the orem of spikelets, o stems grassy, usually leafy at least at ase; leaves alternate peed Areese leaf-sheath, a ee the sheath alone present :— +Flower in axil of a glume only; leaves 3- stichous, rarely 0, sheaths closed in front; fruit a nut with seed free inside; embryo within the albumen ; style simple with 2-3 sti jit Intermediate hermaphrodite glumes few, not more numerous than the 2 or more lowest empty ; perianth of 6 gee bristles 0. Ryne ospora. Intermediate hermaphrodite glumes esaly many, always more numerous than the 1-2 lowest empty Flowering glumes arranged eiekonys ae absent : Rachilla of spikelet deciduous ......+++++++++++ 9. Kyllinga. Rachilla of spikelet persistent :— Fruit laterally compressed 1033. Pycreus. Fruit dorsally compressed 1034. Juncellus. ep of style constricted or articulate above the fr ‘Bion leafless ; perianth aaa by hres ‘bristles . Eleocharis. Stem leafy below ; perianth 0 Style base LR or if decbhiets not leaving a tumour on the fru ace anne from the rachilla 1039. Fimbristylis. Glumes persistent on the rachilla 1040 Echinolytrum. Style base deciduous, leaving a tumour on the fruit 1041. Bulbostylis. ie of style passing gradually into the fruit :— rianth of 2 hyaline antero-posterior entire hypogynous 1042. Lipocarpha. ag EE ET TT a actuate hacrr a vata scales, when 2 not antero-posterior :— e 26 BENGAL PLANTS. [Artificial Guid Hypogynous scales 6, divided to the base into linear segments ...... 1043. Eriophorum. — Hypogynous scales 1-7, undivided, or 0...1045. Sei irpus. +Flower interposed between a glume and a palea ; leaves 2-stichous, sheaths open in front and ligulate at apex behind; fruit a grain with seed adherent to pericarp ; embryo iene ea at base; styles 2, distinct, very rarely connate below Spikelets articulate on their edie or ons) ai with them Spikelets all similar; styles connate below ...1065. imperaill Spikelets dissimilar ; styles free :— Glume III of sessile spikelet male ...... 1076. Pogonatherum. Glume III of sessile spikelet neuter or 0...1080. Andropogon. a a with their pedicels and persistent on them ; styles fre : Spikelets 1 1-flowered deeb clnbes di 1088. Polypogon. id :-— ee minute, in globose clusters on an elongated simple achis El ehh Niehaus 1097. Elytrophorus. | icon conspicuou : Spikelets pendatliadee with long silky hairs, in large panicles agmites. sore not penicillate with silky hairs, in Wiebe panicles” pikes 1101. SRCKAME CS CC TeESSERESETS SHUR SE CURES a Ch WSs SF —_ Class I. DIANDRIA. Carpels and styles 4, carpels free; small submerged aquatic plants brackish ponds and marshes, with narrow grassy leaves...1021. a arpels solitary, or if 2 or more, connate ; style simple with 1-3 stigmas. or if styles free not more than 2 :— *Leaves sheathing at the base or occasionally a to sheaths; nerves parallel with no reticulate venation :— +Perianth reduced to small scales o r bristles, or fais :—[p. 28 a gl pa a palea; leaves distichous, sheaths open in front and ligulate at apex behind; tuit a grain with segues 4 outside the albumen; st p. 27 i yles 2, free or rarely connate below § Spikelets articulate on their pedicels or deciduous with © them:—{[p. 27 ‘| Rachis of inflorescence inarticulate : ; Styles free:—{p. 27] **Spikelets very many, minute, densely crowded on the capil. : lary branches of a large panicle [p. 27] 1050. Thysanolena. to the Genera. |} II.—DIANDRIA4A. 27 **Spikelets secund on a slender flattened or — rachis . 26 064. Dimeria. . “| Rachis of Aniopmanet articulate :—[p. Spikelets all sim Racemes of ets in compound spiciform panicles ; styles connate at b 1065. Imperata. Racemes of ale - nate, ‘nasil or pe grerrs on short n axis ; ining s fre Pollinia. Spikelets aicaiegtia Lower floret of coadle pane male :— Spikelets sg emnats styles fr Spik 3086, Pogonatherum. ae l-a iad Leaves oo spikelets 2- — . Apocopis. Leaves cordate at base; spikelets ssayie- 1078. Arthraxon. — 2-nate, only the upper one i! ; styles connate below 1079. Lophopogon. Lower Pte of all the spikelets sii 080. Andropogon. §Spikelets continuous with their pedicels ry persistent on them; styles free :—{ p. 26 Leaf-blade tunel trabeculately “geil between the 109) parallel nervy 6, Centotheca. Leaf-blade without any transverse cn — anes 1-flowered :— 4 Glumes I and II firm, awned ....... .»...1088. Polypogon. pi T and II membranous, not awned 1090. Sporobolus. Spikelets 2- or more-flowered :— Spikelets minute, in globose clusiett. 8 on i long simple Petr hy BRgReeS caper eNE ey Cee wnpee re 7 109 Elytrophorus. Spikelets conspicuous Spikelets a eriillate with long nh peat panicled me ites. Spikelets not penicillate, loosely pn or spicate 1, Eragros t Flowers in the axil of a glume only; leaves ‘ ares or only nea sometimes 0, sheaths closed in front; fruit a minute nut with embryo inside the albumen; style simple with 2-3 stigmas :—[p. 26] BENGAL PLANTS. [Artificial Guide Intermediate hermaphrodite — few, not more numerous © than the 2 or more lowest empty :— Style 2-fid ; perianth of 6 cee bristles 1030. Ame Style 3-fid ; perianth 0 Cla i Intermediate hermaphrodite glumes ane many, it: more — numerous than the 1-2 lowest empty : a Flowering glumes distichous; perianth 0:— + Rachilla of spikelet deciduou 1032. Kyllinga. ruit laterally compressed.................. 1033. Pycreus. Fruit dorsally compressed 1034, Juncellus. — uit trigonous 1035. Cyperus. — Flowering glumes spirally arranged :— Base of style co: cted or articulate above the fruit : Stem Sishiai ence of bristles......1038. Eleocharis : Stem leafy below; perianth 0 :— io si rage persisting, or if deciduous not leaving a tumour it :-— Sian separable from the moh 3 039. Fimbristylis. Grames persistent on the mil s wnat : Style. base deciduous, leaving a a — the fru 5 . Bul Siecisti Base of style passing gradually into ri Ph perianth usually of scales or bristles :— Hypogynous scales 6, divided to the base into linear : segments iophorum. Hypogynous scales, if present, undivided :-— Leaves hairy ; hypogynous scales 6, or 3, or 0 : 1044, Fuirena. Leaves glabrous; hypogynous scales 7-1, or 0 : 1045. Scirpus. — }Perianth conspicuous, in two whorls of 3 each :—[p. 26 ‘ Perianth segments in two dissimilar whorls; staminodes 4; leaves | thin 976 ua eS segments all similar, corolline; staminode be gid A to the Genera.) II.—DIANDRIA. 29 Perianth 0; small membranous or fleshy herbs with minute flowers in slender simple spikes ; leaves opposite or whorled 2. Peperomia. Perianth of 2 distinct whorls, sepals and petals always present :— etals free Leaves witetmate Herbs ; sepals and petals each 4; leaves Eade lobed asturtium. Trees or shrubs ; poe 5 or more and pete a leaves simple or compound odd-pinn Fruit a small, eee itiaiotcen drupe; leaves simple or 201. Melio: und sma. Fruit “at 1-5 linear-oblong, membranous samaras ; leaves n 148, Ailanthus. om Leaves sPape Shr ar yitmaitel amie the calyx and outside the flat disk: wc rather large, fleshy ......-..----ss++00+> 182. Salacia. Herbs; petals inserted at the ie of the éalyatiibe on the edge of the cupular disk; fruit very small, = 2, Ammannia. Petals connate in a gamophyllous corolla tCorolla regular; stamens alternate with carpels, facing each other at opposite sides of the flower, never accompanied by staminodes ; leaves sAeLamer :—[p. 30] Corolla-lobes im Climbing fees a berry-like fruits ; peti ea or simple minum. Erect trees with dry capsular fruits Leaves simple, fruit a compressed ethers capsule 2. Nyctanthes. Leaves compound, odd-pinnate; fruit an eel woody sule 533. Schrebera. caps RAB vadivate leav trees or dherabs: “with s iastil leaves pinnately nervy vid cee Flowers in axillary panicles or cymes; corolla-tube very short so that its lobes form often almost free petals, or als connate in twO pairs ......-+.s0+-r+++ 534. Linociera. Flowers in n terminal panicles ; corolla- always obvious Climbing shrubs, with thick sar gts wncagly 3-nerved from the base ......-..s..+++-537. Myxopyrum. Boul Serre Sela oreo BENGAL PLANTS. [ Artificial Guide a tCorolla irregular, often markedly so; even when only somewhat | oblique, th lobes anterior = and —e accompanied by 2, sometimes even by 3 29] e stamens not alternate with carpels but with corolla- — and obviously either a posterior or, less frequently, an — Corolla ii pee 2- incad, the stamens — with | obes lowe v: submerged capillary multifid leaves Corolla not spurred :— ” 7 ; Corolla distinctly 2-lipped; staminodes 2, representing ; an imperfect anterior pair of stamens :-— Stamens and staminodes both inserted within the ceslbcinbe tgs OTM Ed oinss riers + opatrium. — Stamens onl serted within he ore staminodes — ci e ae throat, both exserted :— ; alyx 5-partite, lobes all narrow :— Leaves with main-veins more or less parallel from — base ; staminodes unequally 2-lobed ; capsule short — 657. Ilysanthes. — Leaves seca main-veins pinnate ; nn : entire; capsule lon 658. Bonn : pea 8 ye Calyx 4- oe upper and lower ae pra lateral Cu na : Stamens at the lower side of the Paine or at least not — obviously representing a posterior pair :-— Small prostrate diffuse or sreening: — with opposite or fascicled leaves never exceeding very minute flowers -07--05 in. lo cn a Calyx tubular 5- sonal shortly acutely 5-fid n. long and with Ae : 660. Micr Calyx campanulate, with 3-4 short ee lobes - 661. Glossostigma — Herbs or shrubs, with conspicuous i and usually conspicuous —_ leaves never under ‘5 in. long :— ~ Ovules in cell of the ovary or on each placenta more vente “" or if only 2 then placed one above the other ; anthers 2-celled :— -celled; herbs of places or 4 Mast Sees 71. Utricularia. — he upper side of flower, representing a to the Genera.) II.—DIANDRIA, 31 Anther-cells divergent ; sess a8 stamens almost always represented by staminodes :— Anther-cells coed at apex; ovary 1-celled, sometimes obscurely so :— eaves several alternate; capsule ellipsoid, included in the calyx...675. Rhynchoglossum. Leaves opposite or’ whorled or leaf solitary ; capsule much longer than calyx :— bn stem leafless or scaly below, with 4 leaves in a whorl at the apex ......... 674. Tetraphyllum. Flowers pedicelled on axillary peduncles : a ma oblique; leaf solitary or leaves 672 ym u rf fone 2-fid; leaves opposite 673. Chirita. Anther-cells not confiuent ; leaves opposite : Ovary 1-celled, the ovules attached under on laminse - a projecting parietal 2-laminate plac 685. M a. Gere pee the ovules attached to an incon- spicuous placenta on the middle of the septum Be Anther-cells parallel or one placed higher up than the other : Leaves ors crowded, subradical; seeds not supported on Pala retinacula ...... 688. Elytraria. Leaves opposite §|Seeds support iol on hard retinacula :—{p. 32] Corolla-lobes twisted to the left in bu 01. Dedalacanthus. per eeaT papers in bud :— ach gh a normally Hig or more- Cas a i—[p- sino pe naa at es angles to the oid, Lege compressed 3. Andrographis. Capsule subterete ; ois much com- d :— §Corolla - tube narrowly cylindric, slender, 2 Spenn ; ovary pubescent . 32] . Gymn Fee e ee eee BENGAL PLANTS. (Artificial Guide — §Corolla-tube funnel-shaped, curved; 3 ovary glabrous [p. 31] 2, rarely 1, in al cell lla-lobes 5, subequal :— ak 4, two opposite outer larger than : the other 707. Barleria. Sepals 5, oe all small :— Corolla-tube long, slender 09. Eranthemum. Corolla-tube short, limb enlarged 710. Codo — — 2-lippe sa nes valves :— Anther-cells parallel, ong bracts large, imbricate ... Ecbolium. — Anther-cells cr one pases up than a ac, at least the lower, with a ame basal spur - like veeeseeess T13, Justicia later a ct eianred at base :— Anther-cells apiculate subequal; corolla white 715. Rhinacanthus. Bracts longer than bracteoles in opposite valvate pairs; corolla rose or purple 716. Peristrophe. — Placente = elastically upwards — from valves ; bracts involucrate :— Bracts PERL in a unilateral spike 17. Rung Bracts either clustered in leaf-axils oF . : (occasionally) laxly cymose 718 "|Seeds not supported rigid retinacula; by | ovules in each cell of the ovary 1:—{p. oi} 705. eer : 1) nacanthus. © ed :— separating elastically — to the Genera. | III.—TRIANDRIA. 33 Calyx equally 5-lobed ; corolla subequally 5-lobed; ovary 2-celled; stamens 2-celle cells divaricate .......+. 721. Stachytar arpheta. Calyx 2-lipped; corolla er or indis- tinetly 2- mit ovar Stamens h 2 aan inte perfect cells ; cial bdeerety 2-lipped 757. Meriandra. Stamens with only the posterior cell perfect, the anterior imperfect or obsolete ; corolla markedly 2-lipped ...+++++++-+++" 758. Salvia. Class II]. TRIANDRIA. *Flowers arranged in spikelets in the axils of glumaceous bracts ; leaves -oo +Flowers in the axil of a simple glume, leaves 3-stichous or only basal, sometimes 0, the sheaths closed in front; fruit a minute nut with pps inside the albumen; style simple with 2-3 stigmas :—[p- mediate hermaphrodite glumes few, not more numerous than oe 9 or more oan ene ee Style 2-fid ; peria pog) pristles...1030. Rynchospora. jorinall 0 Intermediate hermaphrodite glumes usually many, always more numerous than the 1-2 whe oh sgitates — Flowering glumes distichou: le 2-fid; rachilla of cpikelot deciduous ...--- 1032. Kyllinga. Style 3-fid, very rarely (Cyperus § Anosporum) subentire and chilla of spikelet persistent ...-.-...-+++++-++* 1035. Cyperus. Rachilla of spikelet deciduous : Fruit- bearing glumes not dinigek fruit rather broad 1036. Fruit-bearing glumes winged ; fruit very narrow 1037. Courtoisia. Flowering glumes spirally arr ged: **Base of style articulate or constrite sgh se fruit:—[p- 34] Stem leafless ; perianth 0 of bristles...----+- . Eleocharis. Stem leafy below; perian Style-base panes on the fetitac.-. cane Coe Style-base er leaving a tumour on anth 0:— or if deciduous not leaving a tumour 1039. Fimbristylis. es fruit eee BENGAL PLANTS. [Artificial Guide **Base of style passing area into the fruit, perianth usually of scales or bristles :— Hypogynous scales 6, ecb to the base into linear segments 1043. Eriophorum. Hypogynous scales, if any, undivided :— —!4 — Leaves hairy ; hypogynous oie 6, or 3, or 0 1044. Fuirena. Leaves glabrous; hypogynous scales 7-1, or 0 1045. Scirpus. +Flowers interposed between a glume and a palea ; leaves distichous, isin. ee separating entirely from their pedicels, or falling with them; spikelets similar or differing in sex and structure; perfect spikelets with 2 heteromorphous florets, the upper herma- p the lower male or barren :— Rachis continued beyond upper ipiihelet glumes 4; spikelets 1-2-flowered, subsecun tees this SR 4 hameraphis. §Spikelets usually in continuous ahha: sac racemes or ee ; glumes herbaceous or membranous, the lower smaller, some- n; firmer, at len rigid, often papery to crustaceous, rarely awned or mu ucronate :—[p. 35 ‘iSpikelets 2-flowe red, upper 2-sexual, lower male or neuter, rarely (Isachne) both fertile :—[p. 35 ure spikelets surrounded singly or in clusters by a whorl _ of naked or plumose b: bristles which falls with the spikelets ; te beloiweid. cific: s 1047. Pennise Mature spikelets — — and singly from the tips of their Latieeiay styles f Spikelets with an ieee: of bristles......1048. Setaria. ake not subtended by bri stles ; Glumes 4, all very minute ; spikelets very numero and very small, crowded o capillary branches @ a very large panicle. Eh lena. Glumes 4, all cons minute or obsolete -— §Lowest — distinet MBit **Glumes I and II Separately deciduous ; spikelets. bibelohiag panicled [p, 35] 1051. Isachn plteoune or a conspicuous and 1 to the Genera.] III.—TRIANDRIA. 35 **Glumes I and II not separately deciduous :— 4 tio west glume, at least, subulate-aristate ; spike- lets fascicled or solitary on a simple axis or on the branches of a panicle ...1052. oP! smenus. Lowest glume not subulate-arista Glume II fimbriate ; glume III with a deep- 2-nerved or hyaline rudimentary palea or 1 anicum. quite empty §Lowest glume minute or 0:—[p. 34] - Lowest glume nute Rio usually present ; glume III with ‘Siaabsiig a minute palea, its nerves — 0 minent ...... 1055. Digi Lowest gl a glume II (= glume = of Digitaria) em st oe ied nerves cu Spikelets not thickened at the base 6. Paspalum. 7. Eriochloa. {| Spikelets 1-flowered, deciduous with their pedicels —{p. _ Spikelets fascicled all round a slender rachis, a — of 2-4; outer glume echinate ; nog free or 061. Spikelets thickened at the base 105 Slt not peers serge singly; peer not echinate ; styles co low dist perros awns 1063. Zoysia. Glumes long-awned.........secceeceeseeeee scenes 1062. Perotis. §Spikelets usually in pairs, one sessile the other pedicelled, or the terminal 3-nate or solitary, in the axis of a usually spike- like raceme; outer glumes more or less rigid and firmer than the flowering glumes, the lower always larger than the florets ; flowering glumes membranous, often hyaline, that of the upper oret often awned or reduced to an awn; styles always dis- tinct sas yg Bs tt tracted panicles :—{p. 36 re of spikelets in . open, compound, much-branched pani Spikelots awnless .. Saccharum. _— awned : ae Erianthus. of spikelets 2-nate, digitate, or eae on 4 BENGAL PLANTS. [4 ritfciat Guide 5 4 ae dissimilar or (Ophiurus) spikelets solitary’ — 1 “ apibedels sunk in pits of an articulate fragile rachis :— Sessile — solitary in each internode of the spike:— essile spikelets not on gaa by an upper spikelet i ven the pedicel of one 1069. Ophiurus. Sate en et nage by dissimilar pedicelled — spikelets e Glume a oo inflated, pitted ...1070. Manisuris. Glume I smooth :— Glume I tralesions bivocssecses 1071. Bon Glume I caudate Vossia. Sessile spikelets 2, opposite, in each cope . Mnesithea. Spikelets not sunk in nodes of the cis: -- Spikelets 3, a sessile 2-flowered and two pedicelled, enclosed in a peduncled spathe on a short 1- -nodal inarticulate rachis ............... 1074. Apluda. y Spikelets many or few on a plurinodal articulate rachis: Fs Spikelets rm racemes pcciots ae or digitate or approximate on — male :— Margin of glume I of sessile green ree - Ischemum. — Margin of glume I of sessile poh Se inflexed :— Spikelets 2-flowered ; leaves lanceolate 1077. Apocopis. Spikelets 1-flowered ; leaves cordate at junction — Wik ghetthie cnc 6 23605 1078. raxon. d panicles or spiciform racemes 5 variously disposed, 2-nate rare ely 3-nate ; lower floret of all the —— empty upper usually awned or — = iL ‘Sessile spikelets more than 2, usually mail a, orescence usually elongate...1080. Andropogon. — Sessile spikelets 2 only ; inflorescence very short thistiria. Spikelets dimorphie, asian sound the u “ =a Hatiseeslcaus udan the 4 lower Sessile, forming an — ‘upper : ae, ..1082, peta fun ieee eae Oia Rest Tarn ae Ss to the Genera.] III,—TRIANDRIA. 37 {{Rachis articulate below the ee spikelets 36] 83. Iseil [p. 3 seilema. {Mature spikelets breaking - leaving the rating or alc f 2 glumes on the pedicel, or alling entire not compose heteromorphous oe :—[p. 34] §Spikelets not inserted in notches or pits of a simple rachis :— ‘Spikelets panicled, or if spicate not secund :—[p. 38] Spikelets 1-flowered, rachilla not or rarely oo beyond the floret ; awns when present twisted ; styles Glume III aay did in fruit and tightly saspin the grain ; awns usually 3- 7. Aristida. lumes all mem = nous; awns if i poset rie -- Spikelets sea: —- I omink. bas gkawie 1088. Polypogon. Rae : pis II ee not awned :— Pericarp of grain — to seed ...... 1089. Agrostis. Pericarp of grain loose............-+. 1090. Sporobolus. ane! very narrow, ar glumes finely acuminate 1091. Garnotia. Spikelete bo or more-flowered :— Rachilla not continued beyond the upper floret :— Spikelets not awned; rachilla elongated between the flowering glumes, but not penicillately hairy; styles free 1092. Cee! lachne. Spikelets awned :— Florets 2, dissimilar, the lower awnless male or barren ; styles free or connate below ........- 1093. — 2-many, similar except the uppermost, which gradually nedsioad ¢ styles free ...1094. Eriachne R schille ¢ continued beyond the upper floret or if not con- tinued (Phragmites) then elongated between the flowering glumes and penicillately hairy ; —- er free :— Spikelets awned sate wn tw _— not awned or if i with ae awn not ae tesselately nerved ; fruiting glumes with reflexed 1096. Centotheca. istles : **Spikelets very minute, in globose clusters on an elongated simple rachis [p. 38]...1097. Elytrophorus. D BENGAL PLANTS. [Artificial Guide **Spikelets conspicuous, not in globose clusters :— _ 37] ows ering glumes 1-3-nerved :— Spikelets penicillate with lo ong silky hairs on the flowering glumes or the callus or both; paniculate; lowest flowering glume sometimes male or neuter :— 7 Rachilla glabrous ; flowering glumes dorsally hairy beyond the middle ...... 1098. Arundo, Rachilla hirsute :— Flowering glumes glabrous hragmites. 1099. P Flowering glumes Seo with long hairs 1100. Triraphis. | Spikelets not penicillate with long silky hairs; many-flowered :— f uter sites shorter than lowest flowering — glume; grain very minute, terete 110 stis. Outer glumes longer —- ee flowering glume ; grain broad, con 02, Myviostachys Flowering — 5- or more need spikelets --1103. Bromus. ‘ISpikelets 2-seriate tad 6 dunt’ on an 4 Seiallindiiis spike or on ~ the spiciform branches of a tenses styles free :-— — Flowering glumes 3-toothed .................. 1104 Diplackae: wering glumes entire or simply aristate 1105. Leptochloa. — Spikelets in simply digitate or simply racemed iptien _ . pikelets in pedicelled, deciduous, articulate clusters 1106. Gr Spikelets not clustered -— Spikelets 1-flowered :— Spikel ets awnless :— solitary terminal -.-1107, aS likes digitale oils iesacidis 1108. Cynodon. Spikelets awned ; spikes ates — = ae Chloris. Spikelets 2- or more- flowered :— Spikelets crowded on a solitary spike...1110. Tripogon. to the Genera.} IIT.—TRIANDRIA. 39 Spikelets in numerous spikes Spikelets digitate or Gieka peepee 1 1111. Eleusine. 3 Spikelets racemed on a long rachis 2. Dinebra. ages inserted in notches or pits of a simple rachis :— [p. 3 Sock solitary at the nodes of the spikes Plane of spikelets radial to the rachis ...... "1s. Oropetium. Plane of spikelets tangential to the rachis ...1114. Triticum. Spikelets 2 or more, collected in fascicles at the nodes of the spikes 1115. Hordeum. *Flowers not in spikelets, inflorescence without glumaceous bracts :— 33 p. Leaves long and narrow, sheathing at the base, rarely reduced to scales or sheaths, nerves all parallel; perianth 2-seriate, with normally. Peria i i 2 ‘diestotlas dee 3 outer segments calycine ; leaves all radical tufted ; aquatic plan 888. Blyxa. Perianth of 2 similar whouki, se % segments petaloi aiden Ovary 1-celled; leaves mostly radical tufted, sometimes all reduced to scales 891. Burmannia. Ovary 3-celled; stems more or less leafy :— Stem leafless between the few radical basal leaves and the single large plicate floral leaf just under the inflorescence 948, Cipura. da. 949. Stem leafy throughout Ovary superior :— Perianth of 2 dissimilar whorls; outer segments calycine — Stem a leafless scape with capitate flowers ; leaves ya — Xyris. Stem leafy :— Cymes solitary, within a spathaceous bract it is 975. Commelina. Aneilema. Cymes paniculate, bracts not spathaceous ...976 Pesianth of 2 similar whorls, more or less calvin: ‘erect tufted Grassy herbs... i jedasive ds ceed ed oyeeeeopenpelede seen tteeee 981. Juncus. res not sheathing at the base, venation reticulate, never reduced to sheaths or scales; short and broad, or if narrow with perianth- Segments 4 or 5 in each whorl :-— a tPerianth none; styles free; flowers in cylindric spikes; leaves i [p. 40 eee ue ory G0 Tk Pipes 40 BENGAL PLANTS. (Artificial Guide tPerianth of at least one whorl present :—[p. 39] Leaves compound : Leaflets gland-dotted ; leaves 3- foliolate or oa -pinna 3. Zanthoxyial Leaflets not gland-dotted :— Leaves even-pinnate; leaflets Opposite :— Petale Gulinsiiicia gonedides. 278. Cassia. PONS hte cds cs baddies £ 284. Intsia. Leaves om seer leaflets alternate......... 148. Ailanthus. Leaves simple Styles 3 or more, free ; carpels united :— Ovary 1- —_ losis always opposite ; rg small but Stellaria. Usually present ... 2.0... ccesces5,. Ovary faa i Leaves opposite or falsely whorled or alternate petals 0 llugo. es always oS a eee 74. Bergia. oe: cahes or see Leaves alternate INVER INGA O sari ch cheval wich site Sides. cues 0 Leaves 2-lobed at apex ....eescecedssceseseses..., 279. Bauhinia. Leaves opposite :— Shrubs, trees or woody climbers: pals free, orbicular, imbricate :— Fruit a berry ; S$ not winged............ 182. Salacia. Fruit a capsule; seeds wi inged ...... lita ipa Sepals connate below, ‘eibiee fruit a — en Bouea. Herbs :— IRM eccdiice, capes sss, 69. Polycarpon. Sepals connate in a campanulate tube :— Leaves large, 3-5-nerved from the base, often unequal ; calyx-teeth and petals always 340. Sonerila. Leaves small, penninerved, equal: one teeth 3-5, petals often 0 2. Ammannia. a ee OT ee eN RP OAR Sil ig ges 14 Class IY. TETRANDRIA. *Inflorescen, ee on a fleshy spadix subtended by a large spathe; leaves simple :— 41) §Epiphytic wis with smooth leaves s—[p. 41] ies free ; ovules and seeds solitary [p, 41]...1009. Scindapsus. to the Genera.] IV.—TETRANDIA. 41 ‘Berries confluent; ovules and seeds numerous :—[p. 40] 1010. rp ppenigsgae §Marsh herbs with leaves p t *Inflorescence never cabtende by a spathe :—[p. 40 Floating or submerged aquatic herbs ; leaves simple : Petioles of upper rosulate floating leaves inflated kad vesicular, the lower submerged leaves SPE Opposite .............ce ees 353. Trapa. Petioles, if present, not inflated and ves a Perianth double, of ras yee coro. orolla gamopetalous; leaves ae Mating: cordate, all alter- nate; ovary 1-celled 601. Limnanthemum. Corolla of 2-4 free petals; leaves small, su ubmerged, narrow linear, usually whorled, rarely alternate ; ovary 4- or 2-celled :-— vules solitary, pendulous in each cell of the inferior ovary ; nous scales absent . 318. Myriophyllum. Plate several on axial placentas in eee cell of the free ovary at base of calyx-tube; hypogynous scales 4, 2-fid 343. pbs fxr ss Perianth single, of 4 green, valvate BSN Bio 0. Potamogeton. Terrestrial herbs, shrubs, or trees, or if ovat in or near ponds or marshes, the leaves not floating or submerged :— Climbing herbs or shrubs, raising themselves by the aid of spirally twisted dies leaves simple or compound ; petals valvate, stamens opposi site petals ode bil idsies nes decane 188. Vi Erect hesbs, shrubs, or trees, or if climbing raising themse ves by voluble stems or by prickles, if with tendrils (Bauhinia sometimes) these simply ee or subcireinate not spiral :— aves compoun Leaflets gland- dotted phomle ls Uiuisll Seok aek ssi 133. Zanthoxylum. Leaflets not gland-dot — 5-celled ; seeds winged.........+++-++sreeer++* 166. Cedrela. g' Ovary 1-celled ; seeds not winged :— Ovule and seed solitary ; unarmed trees with once pinnate 210. Rhus. le digitately twice heat se nt leaves... Leaves eran — tLeaves alternate :—{p. 4) sPesieia wt :—{p. 42] Seeioe anth tubular and —_ ected above the ovary; 1 oe h-lobes[p. 42] 807. Eleagnus. 42 BENGAL PLANTS. [Artificial Guide **Perianth deeply partite or the segments quite free, if tubular below not constricted above the Neat :—[p. 41] Ovary inferior bedice 336. Gyro conan Ovary super Stamens sic, with perianth-segments 86. Rivina. Stamens opposite perianth- -segments :— Perianth- aoe valvate ; Soe or trees :— tary :— Ovule Ovule erect; bracts small; stem — 2. Cansjera. Ovule pendulous ; bracts large ; _ erect Lepionurus. Ovules 2, ascending ; ; Stem erect......803. Heli solitary : ianth green; ovule Béadolona; small trees 853. Celtis. Perianth coloured ; ovule erect; herbs 87. Polygonum. }Perianth double :— ttPetals free or only slightly connate below “hea 43] tied ee 169. Olax. e: §Style simple or atblee united :—[p. 43] ae 1 — free carpel; leaves 2-lobed at the a uhinia, Gracy: a 2 or more i pieuly ‘ckejalas leaves not 2-lobed at apex | Ovary superior ; ok hypogynous :—[p. 4 Leaves pinna tely lobed ; fruit a 2-valved ae with a partition (replum) between the 2 pla- centas :— Fruit long, narrow, cylindric 39. Nasturtium. Fruit short, —— sea venenen ts - Lepidium. — not lobed, Margins entire or only Seu alternate with petals :— Ovules and seeds pendulous ...,.. 176. Ilex. Ovules and seeds erect or as = 180. ymnosporia. Stamens opposite the petals ..,. apr Sabia. to the Genera. | IV.—TETRANDIA. 43 {Ovary inferior ; petals cea af 42] 2. Ludwigia. §Styles 2 or more than 2, free :—[p. oT Trees or shrubs ; stamens — zs petals 5. Homalium. Small viscid-glandular herbs a insectivorous leaves; stamens alternate with the peti ++Petals united in a gamophyllous corolla; ovary superior :—[p. Stamens opposite the corolla-lobes ; leaves entire :— rae annual herbs; seeds many in a circumscissile 516. Centunc us. Shrabe, mostly climbing; seeds solitary in a small erry-like fruit 518. Embelia. Stamens alternate with the corolla-lobes orolla plicate in bud; ovules many; leaves entire, or variously lobed or pinnately cut ; “ae or herbs, often prick . Solanum. Corolla-lobes imbricate in bud; bere ert or with each cham of a 4-celled ovary; corolla quite regular :— Styles 2; a prostrate herb........---- 609. Coldenia. — terminal on an entire ovary; trees or shru ces es a twice 2-partite stigma, not annulate ......s++++ ..604. Cordia. Style shortly 2-lobed, with a borisonted ring below the stigma .........--- 605. Tourn ia. —— many in each cell of a 2-celled ovary; rolla somewhat oblique; herbs.....-.-. 642. Celsia. +Leayes sual :—{p. 4 Perianth single; trees; lobes of perianth valvate :— Ovary 1-celled; ovules 2-3 on a free central placenta ; stamens — Ss -lobes «.-+++++++++ 810. Santalum. vary many on axial placentas ; stamens ican with ise aa -lobes 346. Crypteronia. Perianth double, or if single (Ammannia sometimes), then small herbs :— BENGAL PLANTS. [Artificial Guide Petals free or, rarely ee sometimes), 0 :— Stamens h ——— als f Sep Siyles a free ; small herbs :— Ovary 1-c elled Soe é 66. Stellaria. ry 2-5-celled ..... 74. Bergia. Styles combined :-— Herbs ; ovary 1-celled............... 69. Polycarpon. Shrubs ; ovary 3-celled.. 182. Salacia. Sepals dinate below. ......., 203*. Bouea. Stamens inserted on the mouth of a campanulate gamo- sepalous calyx :— Small herbs; petals minute or 0...... 342. Ammannia. Shrubs ; peta conspicuous, wrinkled...345. Lawsonia. Petals connate in a gamophyllous corolla :— Stamens opposite the corolla-lobes ...... 808. Loranthus. area ns alternate with corolla-lobes : Ovary inferior : :—[p. 46] “Leaves opposite ; Atipalee . . 2506. Campanumeea t with in able petiolar oe or if thpulad 0 dekcvis. ghddied: — 4 Ovules usually numerous, never fewer than 2 in each cell of the ovary :—[p. 45 Corolla-lobes twisted in bud :— Fruit a capsule; seeds many, small; flowers in terminal panicles..,...... 407. Wendlandia. Fruit a berry; seeds few, large; flowers axillary :— Flowers in spikes; ovules pendulous from apes OF eel io... 0. Petunga. Flowers in fascicles or small cymes :— Ovules 6-10 in each cell, pendulous from iS Spee citi. civic 421, ianthera. nt capsules, or if fruit indehiscent BP ate Sometimes) then small herbs with d dry minute fruits — to the Genera.] IV.—TETRANDRIA 45 Calyx-teeth in fruit contiguous; capsule loculicidal or septicidal, or rarely inde- iscent; seeds usually angular 410. Hedyotis. Calyx-teeth in fruit remote; capsule loculi- . cidal above them, ad indehiscent :— Seeds minute, angul grt Oldenlandia. eeds Rae aa or gee with a vity 412 otis. §{Ovules hire in each cell of the ovary :— (p. 44] Corolla-lobes twisted in bud :— owers paniculate or corymbose :— Bracts coriaceous, never sheathing 425. Ixora. Bracts membranous, the lower sheathing : 424. Pavetta. Flowers axillary, fascicled or solitary 426. Coffea. 1 Corolla-lobes valvate in bud :— £ £ [p. 46] ++Fruit a fleshy or dry drupe, with two or more pyrenes :—([p. 46] Flowers cohactine by their ome pareatg a firmly fleshy head......... 427. Morinda. Flowers free :— Erect shrubs or trees; pyrenes in a leathery or fleshy drupe :— Leaves decussate :— Flowers in axillary fascicles Vor cymes belie 2-celled 428. Canthium. Ovary 3-5-celled 429. Vangueria. Flowers in terminal cymes 430. Psy Leaves distichous 431. Lasianthus. wining herbs or shrubs; pyrenes in a papery drupe.... ...433. Paderia. BENGAL PLANTS. [Artificial G ttFruit of 2 separable cocci; herbs:—{p. Cocci indehiscent :— Flowers in cymes; cocci small 434. a solitary, eg cocci large, . Hydro eee eee ey weeeee {Ovary superior Lp. 44] Corolla regular Ovary Leelled : — Ovule iin 538 Balvadors: Ovules many 600. Swertia. Ovary 2- celled s ovules many :— Corolla-lobes contorted :— Corolla-lobes twisted to right...596. Exacum. Corolla-lobes twisted to left...542. Mel Corolla-lobes not twisted :— it i APE id sks c5e0s 595. Strych Fruit dehiscent :— Corolla-lobes valvate...... 592 . Mit ome ae lobes imbricate ......593. Buddleia. Corolla o a ie in ic cell of ovary numerous Fruit not 4-lobed :— Fruit a small drupe with 4 pyrenes 724. Fruit a leathery capsule ...... 735. Avi Fruit 4 - lobed, separati ing into 4 ds nutlets :— §Calyx subequally 5-lobed :—[p. 47] ‘|Calyx-lobes short; stamens exserted 47 ] Corolla 4-fid with a spreading lip e 746. Pogostemon- Corolla subequally 4-fid 74 Pee TS a ee ee to the Genera. ] V.—PENTANDRIA. 47 {| Calyx-lobes long, plumose [p. 46] olebrookia. §Calyx declinate 2-lipped [p. 46] 749. Perilla. CLASS Y. PENTANDRIA. Pat ascoaee sare on a fleshy spadix subtended by a large spathe ; leaves simple : Epiphytic eerie with smooth leaf-stalks and ae 010. Rhaphidophore. Marsh herbs with prickly leaf-stalks and leaves ..........-- . Lasia. Inflorescence not within a spathe, or if naan not eas — Floating or partly submerged aquatic herbs :-— Corolla mars petals free ; stems fistular, floating, and rooting at the nodes; branches leafy, erect ; leaves not floating :— Flowers ues showy, in few-flowered racemes; leaves linear- lanceolate, simple; ovary 5-celled, superior ...... 132. Hydrocera. Pen small, in eat: = umbels ; leaves pinnately com- und; ovary 2-celled, inferi: 390. GEnanthe. Saas ee petals more or pas connate, leaves floating :— Ovary 1-cell ed :— Leaves small, whorled, spathulate or orbicular, somewhat vesi- cular ; petals connate in a cap; fruit a 5-valved capsule 317. Aldrovanda. Leaves large, cordate, alternate, or only subopposite, flat; petals connate in a deeply lobed rotate uk fruit subin- _~Sehiscent 601. Limnanthemum. “Ovary 2-celled; leaves cordate or hastate; petals connate in a ampanulate corolla ; fruit a 2-4-seeded capsule ...626. Ipomoea. Terrestrial herbs, shrubs, or ee or # Dadaist in or near water the stems erect and the leaves not float “Climbing herbs or shrubs with aril dco peo :—[p. 48] Flowers with no corona; style simple; pe nnate at tips in a calyptra ; stamens opposite petals, the aoa pa ee : style simple ; leaves pur OF COMPOUNA ......++-eeeeereee 88. Vitis. Flowers with corona outside stamens; styles 3; cit free ; stamens alternate with petals, adnate below to gynophore ; leaves simple, entire or lobed or partite ...+++.--s++se+-+-++ .357. Passiflora. ~ BENGAL PLANTS. *Erect herbs, or shrubs, or trees, or if climbing raising themselves by voluble stems or by Prickles ; if by tendrils (Helinus, Ancistro- cladus Bauhinia sometimes, and Strychnos sometimes) then lisse seats hooked or eines: but not ae a 47} Leaves absent; yellowish parasitic twiners............ uscuta, Leaves present :— i Leaves compound :—[p. 4 {Leaves grees Pt di —[p. 49] simply pinnate or ianataly 3-foliolate :— t 33 Zanthoxylim ‘ Leaves not gland-dotted :— es odd-pinnate :— Leaves opposite :— Petals fre 199. Turpinia. Petals th in a tube wisi oe. 402. Sambucus. — Leaves alte iu. _ Seeds irae ovary 5-celled......... 166. Cedrela. Seeds not winged a ae 2-celled, nosis arillate ...197. Harp ullia. Ovary 1-celled, seeds not arillate Leaves shes: ate hosten 210, Rhus. Cassia. Leaves twice or more than twice pinnate :— Leaves evenly twice pinnate :— Anthers gland-crested 296. Neptunia. Anthers not gland-crested . vss++--298. Desmanthus- Leaves unevenly twice or more ise twice pinnate :— Lea ves opposi ite 678. Oroxylum. Leaves alternate : — Flowers not in 1 a in panicles : carpels 3, — in a l-cellee vary + io : Flowers in umbels : TOarpelag 2 ey ttPetals “nie flowers in compound uM- bis } ous :—[p. 49 ‘] Fruit constricted at commissure or !8 rally compressed ; ridges of fruit slender -— [p. 49] to the Genera.] V.—PENTANDRIA4. 49 Furrows of the fruit with apes vitte Furrows of the fruit with 2-3 vith 387. impinella. Ridges of the fruit not thickened :— etals white ..........++++ 389. Seseli. Petals yellow ...... 388. Foeniculum. Ridges a ae fruit — and corky ; oats tals w. Cnanthe. Frui — compr' — ida, the “lo ridges winged.. 391. ceanagpeie p. 48] Fruit glabrou psvcmies 392. pp OE Fruit pea bristly.........--- 393. Daucus. t {Petals valvate ; umbels racemed or panicled :— . 48 Pedicels jointed ; albumen ey . Panax. Pedicels continuous ; albumen faites ted 95. Heteropanax. a 4-5 ; pedicels jointed ; en faintly im- 94. Aralia. bricate [p. 48) - {Leaves caida compound ; flowers in —— fobeey = » 48) Carpels 5, styles free ......+seseereeeeeees re Heptapleurum. Carpels 2, styles united .........ss+eesereee+ 6. Brassaiopsis. ra simple :—([p. 48 §Leaves alternate (in Trichodesma alternate only above) ; or if ret (Sarcosperma) with stamens opposite the petals : Perianth double . 59] **Petals free or eee one rarely (Holigarna, Tamariz), faintly united at the very base; the stamens never adnate to the petals :— 52 1 **Petals valvate or ea in bud :—{p. 50] ges — te 50] tttLeaves palmately lobed; ovary inferior ; sta- mens it = lb [p.50]396. Brassaiopsis. Mo. Bot.Garden BENGAL PLANTS. [Artificial t{ {Leaves penninerved ; ovary superior ae Ovules pendulous from tip of cent place nta ; -stamer ens opposite edges, ocell stamens opposite free petals......... 170. Opilia. . 49 Ovary inferior ; oa in umbels; leaves palm- ately-nerve 384. Hydroco ***Petals imbricate or contorted in bud :—{p. 49] ttStamens alternate with petals :— —[p. 52] tStyles or stigmas 2 or more than two, free: Orary capi vary lied, styles 2; leaves with — 0 diated at the base; flowers Umbels compound ; leaves Hnear Bupleurum. Ovary 1-celled, styles 3 ; petit not sheath- ing ; flowers racemose or panicl Petals contorted ; sisin't ot adie acoreseent istrocladus- 85. Ane Petals ar imbricate ; _ of calyx not accre 206. Holigarna Ovary sopeita or half-superior :— 51] any, small :— Leaves beset with glandular hairs Leaves not glandular :— Sepals and petals dissimilar Sepals and petals alike or nearly 89 355. H to the Genera.] V.—PENTANDRIA 51 tOvary 2-5-celled :—[p. 50 Styles and carpels 3-4 122, Reinwardtia. Sepals more or ae connate below ; ovary 2-celled ; styles 2 ......... prong ttLeaves minute aad scale-like aes 13. Sa iat rep aw or pi united :—{p. 50] olla irregular : gLeaves lasaiee: 2-lobed; carpel solitary; als 5 279. Bauhinia. @® Mueaves not 2-lobed; carpels more than londil superior ; leaves not sheathing :— Anthers free; ovary 1-celle 54. Ionidium. Anthers connate ; gli s see : . Impatiens. Ovary inferior, 3-celled ; fool sheath large - and stem-clasping............ 943. Ravenala. Corolla regular :— ti and ao 5, rarely 4; leaves h penninerved, rely palminery wit! reside venilene: petiole not ieathtig:— [p. 52] Ovary super Sepals ees iF trod ..118. Triumfetta. ee imbricate, more or less connate Ova 3-5-celled ; petals not accres ers cymose; ovary at base nites with dis 180. Gymnosporia. Flowers spicate, racemose, or pani- culate; ovary at base free from disk 179. Ce. Ovary 1-celled; petals accrescent 204. Swintonia. One inferior :— 52 BENGAL PLANTS. [Artificial Sepals imbricate, shortly connate below; ovary 1-celled and 1-ovuled Sepals valvate, united below in a racy tube; ovules more than ‘s gy 1-celled ; ovules 2-5 329. L Ovary 4-5-celled ; ovules very many ee Lud wigia. §§Sepals and petals, each 3; leaves parallel- — umnitzera. — ics ~_ stem-clasping oka ovary — eck en 979. Floscopa. — 2-cell ++Stamens pst the petals :—[p. 50] epals v; Ovary ce or half-superior Fruit a dry or fleshy drupe with no termina eae 184. Zizyphus. 8 Fruit a dry nut prolonged above in bee aa linear leathery wing ............ 185 tilago. vary quite a: the fruit per: by the - cal. persistent Fruit Sniageavl ; flowers in paniculate fascicles d ) 186. Gouania. Fruit terete, ovate; flowers subumbellate 187. H Se see imbricate ; ovary superior ...... **Petals u in a sensctliiiinl corolla ; “if free (Embelia) the stamens adnate to the petals :—[p. 49] tOvary inferior or half-inferior : :—[p. ra — not adnate to corolla :— p- 5 Leay ve vidoe —— from a strong midrib; hise indehiscent.:.2............... 944 Musa. a Leaves vito ee venation reticulate; : fruit dehise Capsule est ve ss calyx-teeth :— Corolla stellately 5-p one Cephalostigma- Corolla campanulate ...509. Wahlenbergia- Capsule opening below the eter elinus. bia. with large stem-clasping Tet heii : trait” 510. Campanula : to the Genera.] ~ 7‘V.—PENTANDRIA. 53 4Stamens adnate to corolla-tube; leaves reticulate without leaf-sheath ; capsule circumscissile [p. 52] 507. Sphenoclea, t+Ovary superior :—[p. 52] Stamens opposite the petals or corolla-lobes =~ sStyles 5 free; ovary 1-0 vuled ...... 512. Egialitis. { re Styles connate, or style simple :— “a Stamens free from corolla-tube ; ovary 1-ovuled ; style 5-armed above............++ 513. Plumbago. Stamens adnate to corolla - tube; __ style 3,€ Ovary 1-locular with a free-central placenta ; ovules 2 or more; staminodes 0 :— Fruit a capsule; herbs :— Capsule dehiscing by valves :— Corolla-lobes imbricate 514, Androsace. Corolla-lobes contorted 516*. Lysimachia. Capsule circumscissile 16. Centunculus. id, indehiscent or follicular; shrubs or “cay nearly enclosing the many-seeded 517. py berr: Calyx free from the one-seeded fru base, imbricate..........++ eae sane lobes twisted to right:— Fruit globose, quite indehiscent 519. Ardisia. Fruit cylindric, curved, splitting along one side......... 5 he Ovary 2- or more-celled ; ovules in each cell one, adnate to inner angle; trees; stamens with 5 alternate staminodes :— Leaves subopposite ; albumen none; ovary glabrous.. 1. Sarcosperma. pore suite ‘sterile = albuminous ; VillOUS .....-s0e-00++- 22. Sideroxylon. ra cf — alternate with corolla- aoe usually adnate orolla E k- : : ve “BENGAL PLANTS. [Artificial 6 ba mes 2S Styles distinct :-— Corolla-lobes 5, Sarame, ; stigmas to style simple, capitat Fruit a drupe ithe 41. 1-seeded pyrenes Fruit a capsule :— eeds very many ............ 603. Hyd Seeds few, 1-4... Corolla-limb aubéntite, plicate ; Paris style 2, linear........ et Carpels 2 a only the styles united :— — of 2 indehiscent fibrous hago _ below or ‘at the stigma :— aa : Style short, pte 2-lobed ; oye stones 2, each 2-seeded; — double; stones 4, each 1- seeded ; herbs eliotropium. oe eloxigadol: not dilated or ar a —