" ee aw y pS af Sg rc wt a ae W. v + - i) My, Rt P f : o ’ wR * r 1 a rs \ a pee: oe ire es . : ta | ) . wat e it are at fe | ¥ x" " \ "7 7 x * re & if ; a A i i Oe . . *A 4 ¥ Ste a faa ~* 4 -+ 5 a 3 wy . a P . P “Ay Mey! § ( we ZY a ¢ i ty : = . ial Pi conn Re a 4 iM, y : a 4! i Me ¢:. ‘A pls CARDEN Hi 4 ie a} WS > ae . VW Gi fork YSN 4 ele J re CHOE ECTARIQUE DE GENEVE WSibU EN 1922 t DUPLICATA DE LA BIRLIOTHRQUE DU CORSERYs ets DUPLICATA DE LA BIBLIOTHEQUE aad CONSERVAT ‘Cin BCTANIQUE DE GENEVE VELDU EN 1922 7 TRANSACTIONS AND PROCEEDINGS OF THE BOTANICAL SOCIETY OF EDINBURGH. DUPLiGats Far: x: eee ee De ee Brea = = BU CoONgERY, =CIZE BcTs, eo TUE VEL3U ti iscg SP NEVE -— 43 * ¢ * i. Se _-* ; > i i TRANSACTIONS AND PROCEEDINGS OF THE BOTANICAL SOCIETY OF EDINBURGH. VOLUME XXIII. INCLUDING SESSIONS LXIX.—LXXII. (1905-1908). WITH NUMERO US EE RYS TRATIONS. DUPLICAT, DE @U conseny .---. 4 PBLiorag ILE ECTAaE Tt ‘ * VEEDU EX QUE DE GENEVE Le Ig22 EDINBURGH : PRINTED FOR THE BOTANICAL SOCIETY. 1908, i D) ‘ eb Bi he mae CONTENTS OF VOL. XXIII. Freshwater Alge from the Orkneys and Shetlands. (Pl. I. and II.) By W. West, F.L.S., and Professor G. S. West, M.A., F.L.S. Some Rare Caithness Plants. By J. Greg. Nicolson : Obituary Notice of the late A. P. Aitken, D.Sc. By Wm. B. Boyd Report of Scottish Alpine Botanical Club Excursion in 1904. By Alexander Cowan : Notes on Mosses and Hepatics tafhentad Parle Gezeauion of Seottish Alpine Botanical Club in 1904, By L. J. Cocks . Notes on Puccinia graminis. By P. Joannides, B.Se. PRESIDENTIAL ADDRESS on ‘‘Herbaria and Biology.” By Professor Jaa ie Drain RES: : : : Alpine Flora and Rarer Plants of the telenshes District By William Young The Hepaties of the Gintates Distr a By walker woe The Botany of the South Orkneys. (Pl. III.) By R. N. usw Brown, B.Sc., C. H. Wright, F.L.S., and O. V. Darbishire . Note on Arenaria tenuifolia, Linn., as a Scottish Plant. By W. W. Smith, M.A, : : : 5 ; : On Drosera Banksii, R.Br. By Dr. Morrison : ; : : Acacias in Various Places: A Study in Associations. By G. F. Scott Elliot, M.A., B.Se., F.L.S. ; : : : : : The Extra-’ fronieil rece of Arran, By the Rev. David Lands- borough, LL. D., Kilmarnock The Savannahs of Guyana. By Eduard Essed : : Meeting of the Scottish Alpine Botanical Club, 1905, at Killin. By Alexander Cowan Notes on the Flora of the Coast ail slandls of Poreagdese East Africa, with Photographs of interesting Trees, pay and Forest Scenery. By J. A. Alexander. : : Note on Rhacomitrium ramulosum, By William Young Note on a Rare British Fern, Hah is fragilis, Yoni Baerereintin By William Young Note on Adiantum Capillus- rohan is. By D. S. Fish . Contributions towards the Botany of Ascension. By R. N. Budmoae Brown, B.Sc. PRESIDENTIAL ADDREsS for Session 1905-6. By Professor Bayley Balfour, F.R.S. PAGE 101 CONTENTS PAGE PRESIDENTIAL ADDRESS for Session 1906-7. By Professor Bayley Balfour, F.R.S. 3 é = eS Notes on New Jiseases on Piss pungens and Mee pottonetee By A. W_ Borthwick, D.Sc. : ; : : : ‘ ; 232, 233 Note on Juncus effusus, var. spiralis. By Mr. Magnus Spence . 233 Note on certain Tussock-Formations occurring in the Scilly Isles. (Pl. IV.) By W. W. Smith, M.A. ; , 5 . dt Further Note on Australian Tuberous Droseras. By Dr. A. Morrison. 236 Note on Abnormal Leaves of Hippuris. By H. F. Tagg, F.L.S. 237 Report of Scottish Alpine Botanical Club Excursion, 1906. By Mr. Alexander Cowan : . 241 Preliminary Note on Paes in Pith er a Cueeiie ‘By Bae fe Bews, M.A., B.Sc. , : ; : eae 2G ~ A New Meconopsis from Yunnan. (PI. V.) By Lieuk Ger D. Prain, F.R.S. ; : : : - ee Patrick Blair, Surgeon eed, Dundes. By Mr. Alexander P. Stevenson 259 Additional Notes on F aes ae Pacietrce Bane Bast ee By Mr. J. A, Alexander . : 3 277 Note on Ophrys hybrida, Pane By Mr. J. F. Jeffrey 282 On the Ricci of the Edinburgh District. (Pl. VI.) as W; eae F.R.S.E. : 285 A West of Scotland arden Wanencine: eee 1906. "9 Rg. David Landsborough, LL. D. 291 Potamogeton pensylvanicus, Cham. et Schlecht, ee einen is England. By Mr. Arthur Bennett 311 The Flora of Prince Charles Foreland, Snviahereni By R. N ; deta Brown, B.Sc. . 313 Excursion of the Scottish Acca ee ‘Club to Killin, 1907. By Mr. Alexander Cowan . : - 823 The Aas and Hepatics of Prince Charles Forplandl Spitsbergen. By . J. Hagen 326 On oh Prothallus of Enpitaaeonaban } “clthcingiag um. (Pl. “VIL. ) By Wm. T. Gordon, M.A., B.Sc. - 330 Luminosity in Plants. By ie Bertha Cheadle M. me . 333 Trees on the Dawyck Estate. (Pl. VIII.-XIII.) By W. Balfour Gourlay, B.A. 3 . 338 Cases of Abnormal Goenination’ in Seeds of Pojanune iawea (Pl. XIV.) By J. W. Bews, M.A., B.Sc. 342 The Use of Arsenic in Horticulture. By J. Bautherford Hill, Ph. C. 348 Some Mosses and Hepatics from the Isle of May. By William Evans, F.R.S.E. 348 PRESIDENTIAL ADDREss for Session 1907-8. By J. Rutherford Hill, Phe. : : - : : : é : : : » 852 APPENDIX . 381 INDEX 393 TRANSACTIONS AND PROCEEDINGS ’ ; BOTANICAL SOCIETY OF EDINBURGH. f G ( VOLUME XXIII. EDINBURGH: PRINTED FOR®THE BOTANICAL SOCIETY BY NEILL & CO. LIMITED. 1905. CONTENTS. Freshwater Alge from the Orkneys and Shetlands. By W. West, F.L.S., and Professor G. S. West, M.A., F.L.S. . 7 Some Rare Caithness Plants. By J. Greg. Nicolson . Obituary Notice of the late A. P. Aitken, D.Sc. By Wm. B. Boyd . Report of Scottish Alpine Botanical Club. By Alexander Cowan Notes on Mosses and Hepatics collected during Excursion of Scottish Alpine Botanical Club in 1904. By L. J. Cocks . Notes on Puccinia graminis. By P. Joannides, B.Sc. Presidential Address on ‘‘Herbaria and Biology.” By Professor J. W. H. Trail, F.R.S. : : 2 3 : ; = e Alpine Flora and Rarer Plants of the Glenshee District. By William Young. = 2 : : F : ‘ The Hepatics of the Glenshee District. By William Young The Botany of the South Orkneys. By R. N. Rudmose Brown, B.Sc., C. H. Wright, F.L.S., and O. V. Darbishire 2 a F Note on Arenaria tenuifolia, Linn., as a Scottish Plant. By W. W. Smith, M.A- - : : : ; : ; On Drosera Banksii, R.Br. By Dr. Morrison TRANSACTIONS AND PROCEEDINGS OF THE BOTANICAL SOCIETY OF EDINBURGH. aT oh ae a pmraRry SESSION LXIX. pew YORK ga rear MEETING OF THE SOCIETY, Thursday, November 10, 1904. Symincton Grisve, Esq., Vice-President, in the Chair. The following Office-Bearers were appointed for Session 1904-5 :— PRESIDENT. Professor IsAAc BayitEyY BALrour, M.A., M.D., D.Sc., F.R.S., F.L.S. VICE-PRESIDENTS. ALEXANDER Cowan, Esq. | Ropert A. Rosertson, M.A., SYMINGTON GRIEVE, Esq. B.Sc., F.R.S E. Ropert Lrypsay, Esq. COUNCILLORS. A. W. Borruwick, D.Sc. | J. A. Terras, B.Sc. Artuur E. Daviss, Ph.D., F.L.S. | Professor J. W. M. Tratt, M.A,, Professor = PATRICK CGEDDES, | M.D., F.R.S., F.L.S. F.R.S.E. | PercrvaL C. Warts, Esq. J. Rurwerrorp Hi, Esq. | WixtiAM WILLIAMSON, Esq. R. Stewart MacDovueatt, M.A.,.| JAMES Wuytock, Esq. D.Sc., F.R.S.E. | Honorary Secretary—Wi.Lu1aAM Craic, M.D., F.R.S.E., F.R.C.S.E. Curator of Herbariwm—W,. CaLpwELL CRrAwrorp, M.A., F.R.S.E. Foreign Secretary—Rev. D. Paun, M.A., LL.D. TRANS. BOT. SOC. EDIN. VOL. XXIII. 1 2 TRANSACTIONS AND PROCEEDINGS OF THE [Sess uxix. Treasurer—RICHARD Brown, C.A. Honorary Assistant-Secretary—W. W. Smiru, M.A. Artist—Francis M. Carrp, M.B., C.M., F.R.C.S .E. Auditor—Ropert C. Miuuar, C. AL ; eo LOCAL SECRETARIES. Aberdeen—Professor J. W. H. Tra, M.A., M.D., F.LS., _ Bathgate—Rogert Kirk, M.D., F.R. C. S.E. Berwick-on-Tweed—Francis M. Norman, R.N. Lirmingham—W. H. Wivxrxson, F.L.S., F.R.M.S., Manor Hill, Sutton Coldfield. Bournemouth—JouN ARCHIBALD, M.D..,. F.R.S.E. Caleutta—Davip Pratn, M.B., F.R.S.E., F.L.S., Royal Botanic Garden. Ms Professor 8S. C. ManaLanosis, B.Sc., F.R.S.E., F.R.M.S., Presidency College. Cambridge—ArtTHuR Evans, M.A. Croydon—A. Bennett, F.LS. Dundee—Professor P. Gepprs, F.R.S.E. East Liss, Hants—JamMeEs Sykes GamBie, M.A., C.LE., F.R.S. Glasgow—Professor F. O. BoweEr, Sc.D., F.R.S., F.LS. e Professor J. CLELAND, M.D., LL.D., D.Sc.; FBS. * Professor G. F. Scott-Extiiot, M.A., B.Se., F.L.S. =A ALEX. SoMERVILLE, B.Sc., F.L.S. Lincoln—GEoRGE May Lowe, M.D., C.M. London—WitiiaAM CARRUTHERS, F.R.S., F.L.S. 3 E. M. Hotmes, F.LS., F.R.H.S. = Sir Georce Kine, M.D., F.R.S. Melrose—W. B. Boyp, of Faldonside. Otago, New Zealand—Protessor James Gow Brack, D.Sc., University. Perth—Sir Ropert Puuuar, F.RS.E. Philadelphia, U.S.A.—Professor Jonn M. MACFARLANE, DSc., F.R.S.E St Andrews—Professor M‘Intosu, M.D., LL.D., F.R.S.E. - Ropert A. Rowsnrson, M.A, BSc. a J. H. Witson, D.Sc. Toronto, Untario—W. R. RippELt, B.Sc., B.A. : Professor Ramsey Wricut, M.A., B.Sc. Wellington, New Zealand—Sir James Hector, M.D., K.C.MG., F.R.SS. L. & E ; Wolcerhampton—Joun Fraser, M.A., M.D. ie A> The Honorary ASSISTANT-SECRETARY read the communica- tion of Mr. W. West, F.L.S., and Professor G. S.~ West, M.A., F.LS., on “ The Freshwater Alge of the Orkneys and Shetlands.” The paper was communicated by Professor I. Bayley Balfour. Nov. 1904. | BOTANICAL SOCIETY OF EDINBURGH a) FRESHWATER ALG FROM THE ORKNEYS AND SHETLANDS. By W. West, F.LS., and Professor G. S. West, M.A., F.LS: PAGE I. IntTRODUCTION . A : , : ; , ; 3 : 3 II. PHYTOPLANKTON FROM THE ORKNEYS AND SHETLANDS . : 5 IIT. GENERAL SysteMATIC ACCOUNT OF THE COLLECTIONS . : 10 I.—INTRODUCTION. With the assistance of a grant from the Royal Society, a visit was made during August 1903 to the Orkney and Shetland Islands for the purpose of extending our knowlege of the distribution of British freshwater alge. The Orkneys were visited first, the only islands investi- gated being the southern part of Pomona and the northern part of Hoy. On Pomona, collections were made from the neighbourhood of Kirkwall, Stromness, Finstown, and Loch Kirbister, but as the geological formation is mostly Old Red Sandstone, these localities are not so good as one would otherwise expect. The collections from Hoy were somewhat richer, perhaps owing to the fact that some of them were made at a greater altitude, but there were few suitable places for the occurrence of these plants. The only two islands of the Shetland group which could be visited were Bressay and the Mainland. The principal area examined on Bressay was in the northern part, in the immediate vicinity of a group of small lakes known as the Beosetter Lochs. The districts investigated on the Mainland were to the south and west of Lerwick and to the north and east of Scalloway. Cultivation of the land is relatively much more extensive in both the Orkneys and the Shetlands than in many parts of Scotland, and the low-lying districts which were probably at one time extensive bogs, are now drained, and alge are con- sequently scarce in such localities. Sleeping accommodation away from the fishing towns is practically non-existent, and in very wet seasons this fact seriously interferes with the investigation of many of the more promising districts. Another factor which has caused this contribution to be less 4 TRANSACTIONS AND PROCEEDINGS OF THE [ Szss. LXIX. representative than it might have been was the difficulty of obtaining a passage from one island to another. Since the recent investigations of freshwater alge from Iceland and the Faerée Islands by Bérgesen, the present contribution is of special interest. Bérgesen! records 321 species of freshwater alge from the Faerées, exclusive of Diatoms. Of these, 174 are Desmids, 118 of which are now known to occur from the Orkneys and Shetlands. Certain species recorded from the Faerdes are conspicuous by their absence from our own collections. Such are Euastrum crassum (Bréb.), Kitz; E. insigne, Hass; Xan- thidium armatum (Bréb.), Rabenh.; and Micrasterias oscitans, Ralfs, var. mucronata (Dixon), Wille, although it is most probable that all these occur in the Shetlands, if not in the Orkneys also. From Iceland, Bérgesen? records 58 Desmids, 50 of which occur in the Orkneys and Shetlands. One of the most notable of these is Cosmarium Cucumis, Corda, var. magnum, Racib. The previous records of freshwater alge from the two groups of the Orkneys and Shetlands are very scanty. In West’s “ Notes on Scotch Freshwater Alge” (“Journ. Bot.,” April 1893) there are the following records from the Orkneys :—(Edogonium Itzigsohnii, De Bary, var. minor, West; Microspora pachyderma (Wille), Lagerh. [“ Conferva pachy- derma, Wille”); M. floccosa (Vauch.), Thur. [“ Conferva floccosa, Ag.”]; Tribonema bombycinum (Ag.), Derb. and Sol. [“ Conferva hombycina, Ag.” |; Oocystis apiculata, West ; Trochiscia insignis (Reinsch), Hansz., f. minor, West; Glwocystis gigas (L.), Lagerh. [“Gl. ampla (Kitz), Rabenh.”]; G7. rupestris (Lyngb.), Rabenh.; Vroeoceus insignis, Kitz; Gleotrichia Pisum (Ag.), Thur.; Stz- gonema turfaceum (Eng. Bot.), Cooke; Cyclotella operculata, Kiitz; Navicula eryptocephala, Kiitz; N. dicephala, Ehrenb.; N. radiosa, Kiitz: N. Brébissonii, Kiitz. In W. and G. S. West’s “ New British Freshwater Algae” (« Journ. Roy. Mier. Soc.,” 1894) two species are mentioned from the Orkneys: Xanthidium Robinsonianum, Arch., and Cosmarium furcatospermum, W. and G. S. West. 1 F. Borgesen, “Freshwater Alge of Faerdes,” “Bot. of Faerées,” Part L, Copenhagen, 1901. 2 F. Borgesen, “Nogle Ferskvandsalger fra Island,” “ Botanisk Tids- skrift,” Bd. 22, 1898. Nov. 1904. | BOTANICAL SOCIETY OF EDINBURGH. 5 In Roy and Bissett’s “ Scottish Desmidiee” (“ Ann. Scott. Nat. Hist.,” 1893-94), the following Desmids are mentioned from the Orkneys :—Staurastrum muricatum, Bréb.; Arthro- desmus octocornis, Ehrenb., 8 major, Ralis; Cosmarium biocul- atum, Bréb.; C. pseudonitidulum, Nordst; Clostervwm uttenu- utum, Ehrenb.; Cl. Cynthia, De Not; Cl. intermedium, Ralts ; Cl. Leibleinti, Kitz; Cylindrocystis diplospora, Lund ; and Cos- marium amenum, Bréb.; Closterium attenuatum, Khrenb.; and Penium polymorphum, Perty, from Unst, Shetlands. Il.—PHYTOPLANKTON FROM THE ORKNEYS AND SHETLANDS. Plankton material was obtained from only one freshwater loch in Pomona, Orkneys. This was Loch Kirbister, about six miles south-east of Kirkwall, and 49 feet above the sea- level. The material was collected on a stormy day, and has proved somewhat poor. One of the chief features was the presence of numerous specimens of Amphora ovalis, Kiitz, of large size. Three typical plankton-species of the genus Staurastrum were present, and there were numerous Rhizo- pods and Peridiniez. On the Mainland of the Shetlands plankton-material was collected from Loch Asta (altit. about 26 ft.), Neugles Water (altit. 222 ft.), Loch Sandy (altit. about 240 ft.), Loch Trebister (altit. 243 ft.), and Loch Brindister (altit. 217 ft.) On Bressay material was obtained from several of the Lochs Beosetter (altit. about 50 ft.). The plankton was not very rich, and this can doubtless be partly attributed to the wetness of the season, the lochs being very full. Another determining factor of the relative rich- ness of the plankton of these lochs was the shallowness of the water. They were all small, shallow lochs, and the plankton of such bodies of water differs very considerably from that of larger rocky lakes, containing fewer species of the Desmidiacee. Beeckii, Wille var. reductum, » xX XXX x x xX XK XK XK x* Xx X xX XX XX KKXXKXKX XXX x KXXXX *KXKXKX xX X & x x XX 8 TRANSACTIONS AND PROCEEDINGS OF THE [Sess. ixix. SPECIES. CHLOROPHYCEX2—continued. Cosmarium subprotumidum, Nordst 53 subcostatum, Nordst . = formosuluin, Hoff. —. = pyramidatum, Bréb. ; granatum, Breb. , var. subgranatum. Nordst . : E. tetraophthalmum, Bréb. sa Botrytis (Bory), Menegh. s5 speciosum, Lund. - subspeciosum, Nordst | 9 subarctoum (Lagerh.), Racib.., forma puntata : : E al 53 abbreviatum, Racib. Meneghinii, Bréb, 33 ee forma octangularts, ‘Wille | 5 angulosum, Bréb., var. concinnum (Rabenh.), We and G. S. West al dificile, Liitkem, var. subleve, Liittkem) Xanthidium antilopewm (Bréb.), Kiitz, var. | depauperatum, Var... : Arthrodesmus triangularis, Lagerh. a &- var. hebridarum, w. and G. S. West Staurastrum dejectum, Bréb. = var. injlatum, West “F curvatum, West 5 a jaculiferum, West cuspidatum, Bréb., var. maximum, West 5 ; 5 5 55 teliferuin, Ralfs 3 pilosum, Nag = Saxonicum, Buln. 3 erasum, Bréb. . 53 brevispinum, Bréb. . i lunatum, Ralfs, var. planctonicum, W.-and G. S. West ; “f granulosum re y, Ralfs . 33 punctulatum, Bréb. 3 eS alternans, Bréb. : 3 dilatatum, Ehrenb., var. vbtusi- lobum., De Not is orbiculare, Ralfs, var. depressum, Roy and ’Biss. . . : rh brachiatum, Ralfs * hexacerwm (Ehrenb. ), Wittr. oe cyrtocerum, Bréb., var compactum, var. D. : : ; 5 ” affine, sp. D 55 pelagicum, Ww. sink G. 8. West. “a pseudopelagicum, W.andG.S8. W est s paradoxwm, Meyen. . var. longipes, Nordst . var. cingulum, W. and ” ” 9 cE G.S. West PA gracile, Ralfs : 33 boreale,sp.n. . 4 Man fe'dtii, Delp. = anatinum, Cooke and Wills * tetracerum, Ralfs{ - , var. evolutum, var. n. ineecoannme granulatum, Roy and Biss. wa Z| 2 Shetlands. a z 5 8 eee g aM 3\s m > El Ss 2) 2 | 3 | Sa aee = s =a |3 2\sis S| 2 |eelx Nectar tal erie 3 = efi|a 2)“ |) 272 |e eles 22 2 4/5 Alo ls S = Bix] 5 1 | On es) cee 3 gas oa peal 2) Sie Fe S 3 A ra 2 | Falls ; } X. | IE. | TEL) EV.) Ve evi vale vee | | = | ee | | | | ee | ee | x4 x | es] x x / | x | x H lias x. | Mm | m4 x x x Reval! xX x ened / ad | ' j Mentll | x | x x | x | x Iheyg x ss | | Xx D6 oe x | x x | Xx x x x % |, xX x x lex x | x \ %* x % |x >a) le * x x ee 4 x x x x oa x a5 x x x x ys x : x oe x x x x ris x % | xX x iy x i x bx og x x me x fh | x x x | rd 4 x | xX x x x x r bX x x oe x x Nov. 1904. | BOTANICAL SOCIETY OF EDINBURGH. Shetlands. | SPECIES. Loch Asta. Loch Brindister. | Loch Clickhimin. Loch Sanday. Loch Trebister. | Faerées (Borgesen). Loch Beosetter, Bressay. < | Neugles Water. .| VIII. = = = = o a < | - | Loch Kirbister, Orkneys. | < _— < i A al pa CHLOROPHYCEX—continued. | Hyalotheca mucosa (Dillw.), Ehrenb. . ; : Pandorina morum (Miill.), Bory . : 4 ; x Eudorina elegans, Ehrenb. . 3 ; , Beles | lees Urococeus insignis, Kiitz P : Pediastrum Boryanum (Turp. ))s Menegh. a var. granulatum, Ralts + glanduliferum, Benn. F : 3 < Guplex, Meyen. . 5 5) (aly Soh Suh OK ee x Z integrum, Nig Celastrum sphericum, Nig . Crucigenia irregularis, Wille . Scenedesmus bijugatus (Turp.), Kutz. é : | “2 quadricauda (Turp.), Bréb. —. 203] rs var. abundans, Kirchn. a denticulatus, Lagerh. a - acutiformis, Schroder, var. brasili- ensis (Bohlin), nob. aes x Ankistrodesmus falcatus (Corda), Ralfs | x » a Ee acicularis (A. “Br. ), G.S. West . x x ny By var. spiralis (Turn. ), G.S. West . . x 9 var. mirabilis, G.S. West x x Pfitzeri (Schroder), G.'S. West. | X Closteriopsis longissima, Lemm., var. propeun, | W.and G.S. West . = x Kirchneriella obesa (West), Schmidle - ; | a Oocystis crassa, Wittr. . 5 : ; 4 | x Be apiculata, West i : : F x » parva, W.andG.8. West 5 x N ephrocytium A lgardhianum, Nag Tetraédron minimum (A. Br.), Hansg. . Dictyospherium Ehrenbergianuwm, Nig 3 al Tneffigiata neglecta, W. and G.S. West. : eal Spherocystis Schroeteri, Chodat . UN ae I Gleeocystis gigas (Kiitz). ” Lagerh. : i Ble zas xX X XXX XX x x PH HOPHYCESX. | Dinobryon cylindricum, Imhof, var. divergens (Imhof), Lemm. 5 “0 elongatum, Imhof, var. undulatum, Lemm. . - é ; 5 2 | BACILLARIE®. Melosira granulata (Ehrenb.), Ralfs 5 Cyclotella comta (Ehrenb.), Kiitz - : - | a Tabellaria floceulosa (Roth), Kiitz . a5 Jenestrata (Lyngb.), Kiitz var. asterionelloides, Grun. Diatoma elongatum, Ag. : “ Fragilaria mutabilis (W. Sm. 5 Grun. | >| x Crotonensis (A. M. Edw. )s Kitton Synedra pulchella, Kiitz 33. Acus (Kiitz), Grun. A sterionella formosa, Hass P : . | Achnanthes coarctata, Bréb. . ; : : ; | Sa | ee XXX X x x Cocconeis Placentula, Ehrenb. Navieula major, Kitz ? : { : ‘ | + viridis, Kiitz . ‘ = ae ok Oy | Ree’ x xX XK x XK X KK xX XK XK x XX 10 TRANSACTIONS AND PROCEEDINGS OF THE [Sess. 1x1. n = Shetlands. ee a = z 8 (2 | 8 Sees | 2\¢|3\4\2)e) = lecie SPECIES. fete eps ete | 2) | = aa | a Et ies Ce tellin it |) Sot SS IMi|¢\al/Si/mla| # (Aes treet tes: al eerie Ss/ 8) 2 | ao] 3 S| ell Saas ° =) al ° ° fo} Zz Ss 5 H | | I. | (0. |110.) IV. V- | VI.| VIL. | VIM.) TX. | BACILLARIEA—continued. Navicula alpina (W.Sm.), Ralfs . 2 ‘ : x 5 Brébissonii, Kutz. : : : salle 3 ‘radiosa, Kiitz . z é A Sales 5 elliptica, Kiitz : : 5 Olt 2cSn tue s Tridis, Ehrenb., var. is (Ehrenb.), Van Heurck. : : ANTS 26 | pusilla, W. Sm. : : . : x Stauroneis Phenicenteron, Ehrenb. : F x | Vanheurckia rhomboides (Ehrenb. ), Bréb., var. | Saxonica (Rabenh.), G. S. West Nes | x Amphipleura pellucida, Kiitz : : 5 x Gyrosigma attenuatum (Kiitz), Rabenh. ; ; x Gomphonema intricatum, Kiitz, var. Vibrio (Ehrenb. i Van Heurck Ht 56 olivacewm (Lyngb. )», Kitz x Coeconema lanceolatum, Ehrenb. } x ,, | eymbiforme, Ehrenb. x | | } Amphora ovalis, Kiitz . x | xX x \ | Epithemia turgida (Ehrenb.), “Riitz | x | | gibba, Kiitz se oe Nitzschia \Palem (Kiitz), W. Sm. 5 : : So lsee os x » linearis (Ag.),W.Sm. . : 4 x Cymatopleura elliptica (Bréb.), W. Sm. : Shlec eal oe Surtrella robusta, Ehrenb. . ne x aad Mii var. splendida ‘Ghrenb. ) Vv : Heurck . =