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Zn eur debate commande 7 Le ET AS er) CR a S D'or su nendreg Cieur ser vo put HD 10 cènenenr bour rates Eapit dE | 7 me me noie D 7 ot a ARE 7/1 Po Hé y 4 | 72 se ie ) pecad Sp SUES > 4% free a a Go res trs lie TEE | Je bre br eufes (Press pre PT. qr'elles Cru lent 124 J us env og De Vosàs oénss 1 rt . de boss de Coll DEA ones tm, 17 rte D Artega de 41, TE L' 7 8 (e) 10 MISSOURI: BOTANICAL copyright reserved GARDEN | on LT - EE Lafre dans dure qe | AA A7 qu Nog ha | run dtdin VIiV ares } Leon Le Bug door géparnlesset cr Tire sai 7 og and ind) Jrer TL ; HT er deu que Mes na Tu 4 à Cherche À Ale rdys Fig qui ne À Pete alt lo D Dirtégquas Lo ge dé Vogred That e(les . ne À ( à nr Le lie ons She RIVE Dar #s n s . 1337 Zu eg au n020) Da Solos 4 S. Voulu pentes ne vopes deb "y Fingnnin qui je pripetéir à laut Der li ox led heg: js DES ET CS et 2 "3 Je has Les : conne mais ll ngilion posresr deg fait 7 Grashnag or As J'eymied) me par 7 le papas jevenss efie le flans hi vue aug dé prett nat Per comadquug avan doute Dulte : Poe hé Ah de red ns far fr lens cape cs jui pau te Fpontanimet nux environ del dou: E Hawrtlont Jecs y So: ET alles ae 1 utinie mai Una Sélord el: . savane à 0e" [16h j'ecdas [LIT T Tire cv. r Le s LD ve» HART 1 2 3 4 5 6 7 8 9 10 MISSOURI BOTANICAL GARDEN copyright reserved CRT nr, Ha dx xt pra Crocenf Jruud. founssSSasg def Zaira 9 | Jrdferr Le Del {x LL cc ue éehavrillon, lu Date dada rte E «7 lndicarimdeda fréquences fnvanté, Sens uv. des dernil infenagens por tro : Des lx Las eds ir Dir céces PT a Lotia Chen a ame at ve fr , N Pioiy: NE lu prisée ne Li since Vagiien er ess) er Pèrêm cg dar mt up. By Dis g ue: Ps Ca Mes 1255. 2 ss T2 Vi #2 36 ]. rer pre F9 | m'a evogt Ni te - _ EP Tai . le quel je mener en O7 Sade oi Lorie Ce tone Honag + ul t4i : lang aüke qu Der Jordee pic 9% leg No had Die AVoeuveau- Mexigi…, ss Dans Colles de fa Californie? Vuallez A mm RE. ed ma LT GSRE Ur 4 prdand ot amis ue, LENS po put fan ut nrégiaur + MISSOURI: . BOTANICAL copyright reserved GARDEN Gay, Jacques Etienne Paris, May 6, 1853 SIT, It has been only ten days since I received the small package of plants that you were so kind to send me in care Of Carray and Clausel, with a small letter dated January 26. I will await to respond until the departure of Mr Clauset, which will occur in the near future. l'am quite flattered to know that my name is not entirely unknown to you, and that its small notoriety was worth a souvenir from you, which will be of great value to me. In regards your name, [ became acquainted with it already some time ago from your Anthology that opened the arena to the Teratology of Plants and from your old liaison with an old friend of mine, one of the most distinguished men of our times and a docent that I like and have always honored. Many thousand thanks for your parcel. It however lacks something, and that is that you did not tell me what I could do to make myself useful to you. I hope it will not be long until you fill this void. It is with this hope that T'permit myself to recommend myself to you and to ask you for some specimens of American plants of which I know you have great knowledge of together with Mr.Braun. For example: Isoetes, Chara Marsilea, Equiserum, Potamogeton and specially the Cuscuta. It would give me great pleasure if you could buy me, specimens in good condition, of those four genders, that grow in your vicinity or in your general area. T'have a fifth gender I want to tell you about and which I have studied and would like to write a monogram about, this is the Fragaria. The species of the old continent are easily recognized because they are less numerous (only four or five) and they grow spontaenously in the surroundings of Paris. They are not found in the new world specially north America. They are poorly represented in our herbariums so we cannot study them in vivo because they are not generally cultivated in our gardens. There they have undergone alterations from intercrossing which does not make it possible for us to know which of the species are really natural. Mr. Asa Gray has already sent me specimens from the surroundings of Boston, some dried and some living. My young friend, Paul Carrey, going up the Missouri and in a location 1337 miles north of St. Louis, was kind enough to think of me, and sent me from there, a Fragaria that was among many Cedars. In the state in which it arrived, I could not study it properly, but the samples had ripe fruit. I planted the seeds, with the hope that next year I will finally see the living plant in its first generation, therefore not adulterated. would like to dare to ask you to give me the same service in regards the species that should grow Sspontaenously in the surroundings of St. Louis. Dried, carefully picked samples, with well preserved roots and stalks, of more advanced growth better than too young, ( there are some characteristics that cannot be seen at the beginning of the flowering season), with perfectly ripe fruits that will furnish seeds that can be sown. The 7 8 9 10 MISSOURI: | BOTANICAL copyright reserved GARDEN À precise location of the samples, the date of their cutting and some indication as to their rarity or frequency, will be of great value to me. There 1s my request. I pray for your kindness, and offer you, dear Sir, my most sincere thanks and most distinguished respects. J. Gay Paris, May 6 1853 Rue de Vangirard 36 Asa Gray has sent me a Fragaria from Oregon. I don’t want to comment on it as yet. I need to see it alive like all the rest. Do you know which are the species that come from the Rocky Mountains, or from the mountains of New Mexico or from those of California? I hope you could pose this question to your correspondents or friendly travelers who might furnish me with interesting answers. Translation Manfred Thurmann MISSOURI: ; BOTANICAL copyright reserved GARDEN a Er po md hd am poaure te SM €? 7 Cpper qi Aonditeer eh SR " » PT ne RACE Tea arts, 26 fprembe 196) Age ln Doté, | D | : M. uen) +. m2 Ram pad laisser pare" end Vsré AS La gels, maté deu Los ns ee TD Ex. Donne ttes sad AE hs: RE US 78e Puarton À A Rae 77 | Desrand cour ; lan je dit aa à dec à Jai Dans CT ne ag cnrtrag bo bar") hr 2 MpHC * Ve y Frgaue- get she ed + Mr) car 7 ALT SE ST veu 22€ ' &- le pur eri Dans ue ages oérail De là OR TT fes leds .. LA RENE 7 Pod pepe Ve, à aies. 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Fe "| fe Ce, Lamine0f 2: d'os quil _ fs auve— DA née, d'otRet pet PAS CE fier per — Re à Dent mdr NZ x cer ARE er "ppp Bechlot Dati ; Me LL + k _——_—— bo écéépseits , 7 8 MISSOURI: BOTANICAL copyright reserved GARDEN Side De-So?te- HUE Let Pl A7) ra De me couplere 7 «ge nt ous, voug Re neurtroÿ ave —]! 1 7e htc, PAT Ja? et Lomé ?econmOig amis en Cor volt #9 PSTE Cehes la” Jenalas 071 se at «pere 2n 057 ÈlX ben A 2areg ie o. ja vou dy g ele podtim dter cut AE de à de (53 ci ht , RS PS qui Lace vivale; ur des solo €. nor airdi zacines Fr | De longues drone À L PP Lg r ent6 Fi Alhales partant. dada So pe Pi siples ; autos Vice a des prod re 7 PR ’ Fe port lindnites; axe 14 Va PRES apr ST Os. @ chis- L' ag alfa CLS tel æ » Me ren MR coute l'ars, De wsnmidte à “ : Lg D vla cote plerte ir excepti Los Des Sroloms, Led ES nese Des Figeé lo mas - lenteur, 2 Pluton SE ces meme Les er PS8 Dre Elus led plus fier and PAard à Cauft- es J'enf ES L_"Defet dela. Vorac fe port 4 20 ME. 7 le fs spiteg ue cle de nohe Dasdt (Pre ee en ra Re Vilmerie La qe Bou) op ide he Madhirpeen dent RE Jane Le Hodjrates Rad. À 2 Chudileës A, Floteg Are ti Cash, de af pape « ina dnipho®) le co ER MTS han Difirquere pas L 7 - prise; ny RS leve y Dent 4 D Va ; RS A "hL MR. - ue L< vase” nr ndpene | Oo is AS UE Ÿ Perte amant 9° 2. @ meer CM Te life de varri dr , tr per Tfmdrique) = pe tra ais 0747 dre À n ES SE RE RE RE RE EE en ss 7 8 9 10 copyright reserved MISSOURI: BOTANICAL GARDEN je vibrer à pnélre, trés emcars FOrtel h25 ge, 4 ss t— D ÆFSa fra: O7 »/ vy'en-ble ? «fur Sn oce- ; | Los fr recuerbirs quete pl x qe, dpi À D ul pond mue SN Wdetlong de l'Atlenti4 1 Tor > LE Corde ja june Gertsh trie BST ne HeRMGUE ee Vis qinie devd # Des le / "2 Se A Des SE : Ave r adfing De Hiéfifips fr 0<. Le —… rer Donna cost TT dhur schant'bons » 1, A 7e LE Fe he pe Du y? écifes 7 a nn let o call > ; s* alor pente * M PSE +. ÉMNAT oME D me$ HOb-ie, 7° PO + à dre Da hiy-1ee , mere CAE par ss? gr ÉARA jan le LES 4 Lique- anglais , mad cr PER Das LE Le pl fentes 7 Lans! É Au 4id i pe A ue Comp : 4 | ue hourotat Dior fourmi 2 . ? eus De fav antte vw Q ce. PATRSSRSE FRTE d 32H74 EE Pa) f F3 7 _ fu Crorfent Jo en Peut lunhie doit dr ré | ls pers États Lreitropher , Jonetet LEA Le de et Tr. Engolinanps Af (Fraus.. Ce cher v : I RP ae été. Jef Donne «he peine frere pre = Es 20 cure foules Peux Dent en bon-elat; ne Le Ve parfaite éd » À 0 RE tre x a DRE DE MR Rand ; D Ÿ, 8 Lirèg Vu PIL2 1 QDifetentt Je bre is a AE) re » 9 Les l'_ju dpure —/ POP A Q sos) Eu IS 07; ! 64 Q m Te #7 2478 LS AHpass. … CL 0 (4e rr* ; Re PS a Tony Z Pas ps Pl dphe. Vous ai sy tperèe paf 74 EC Je | A COée de” 7n env gr Cole Te) onde, quA- nn. | < F TÎ Rs pe # é « ns # e |. ruche RE be - Duries, de ferrte- $ 2) SC UrRE "Pre fout firent 1e af “+ su | Let Nef" hr ver frouve l'Ltoster last | Den VEcho x Ike Di New #amphite 5 OVER houvearié DOUIL OU quart n'a o7d p éncotw- vu )g dehantilont amati caind V— LS) Q & | ù Qt ce E- egpele, Ceux de l'écho «ah 3 vont au ë # g 4 #4 TZ F7 Lil ef ain M Fenant Tkfourh is x Perlin agen TC DRrjet he-p ns D 'LlErex de hipamas Vo TT este il deg A artt ons SPL AT k Aou ep Céder. lbs Si Ce-Heié À ER ere ben poser Hide et ayant ta We acr pod LT] v'thrées ? : à | 7RD Le à Bo TANECA! GARDE GE RGE NGELMANN PAPERS % | A ‘ j LL 2 ES 4 5 6 7 8 9 10 MISSOURI . BOTANICAL copyright reserved GARDEN \ > fée obtenir, SÙ étoir podlile, des Dev PE 2er 200 d'? 53 D Anse Das CAO) MF 2 FR Air. FR L'Ani RNe , oil Lyp0 M 20580027 JS PrÉPSIP £ 4 20e J'$f515 F0? VU PI T2 1 AALALS Sd f née 1"? A7 Je Un ag pue 2H a TE CAE) eee PAr2 ue Se à E nf? au Pres locntired que vor Rss TRES Lroctes tiparia- Dans Votu-ldrua SÈ se 4 TA e . Pad de ai b20 / « 72058 17% 272 % F2, Gad EN AIT » gr apte Pop AT br t … WE LE à ARS 7% pner (y: 78 / F0 à TS #2 Ë he Se sshite (SC FT RomQu (ais cer bieu- votre Ru vous SES prie de le rÉdte4et lie AS ra onge). Or LA Loc vos CcÂnTT Lung de Cette Lo He Ac prile Sur” De LEop At, ne Lui æ pas permali dater De cetfe localité ? e X à fe- Loir Le LE pre Ve vouf pouvez &f Vonleÿ 4 / 2/2 ersplogener Dee Carton J ; < e je LPS SE Ë o ffue Leg au nt L26pète françatses gs ue, ff. Qiuitjeu d-moi, Avahd Tec : fe A LE RE que dr sa Das S po inbre d'annie derniere, alles NN notice 42? l - 44, Dunieu à Dontk. let noms À LE «7 Goya” y st À votre d1$pes1 = ia es Sy Re ee plie vod he ihdtgri À . te Ge N ae axvertz* AM « læ se [Re er1- Al= él À a 2, 3 4 5 6 7 8 , LS * £ eu , ouvez- «edf A el me Requete : ’ ? re. ER CeDer Lise. 1e Desrlé. CHAT ad Verser ne pas xttépdte- th Pour -noud, faite Lvolre envVeot) ee ans JEhe- Del» poste ocux lefrrasy cd HE, té nl a a 2 SL TR TEE Durs at æ. La : 7 22 La 4 Te ui! Be Ga pre GT SE ÉTenpent au vrat para p* PR Lehmrl ti PR 7 ns 2.177 4 ment hog Al: | sntrsfort ta, e CeECAsr TE Leg ectcorstan<"s 9 10 MISSOURI BOTANICAL copyright reserved GARDEN T Ê : sf, ve à à ht MEET ERA Le DEL #j } 4 L + # rer - æ a“ » . ; a 12 3 4 5 6 7 8 9 10 copyright reserved MISSOURI: BOTANICAL GARDEN Re (462. : { ire Fu sec ment es Celle Lhbee eat” Page p lier Je eagois nee de le Dunes que rit AE ln etes PL H/irñepe Seagate je PS: ro LE dde ra. Ed TL y rervreng pour ina pprendte que Gran a Dont vert de Lecevoi- Def nouvelles, 1° = Ja dortès nes d. de cet plate gps Kb ht. 2 ai ON agpias jte ie D rate D aux États-Unis © Arno: rois La raté Se- ? e Hecfent . rois ekLenti Üons, dont Lpni-S à Éope, Ce ques 4t Ted vaut pour Des den de petrtiee Arr à Votuèl-pour. La Jsoetes: Re | ue platee\ pige técoleue. ete entree D Ps hui lite heat der cum les Pi died RTE 2e D prreirentTie Vel 508428 : Cf Encore rncénpues Cest re T2 rois prostpert Vies voulreeponvet. Ærtart— quete puis Pie is ler 7 \ ,. , es è E2 74 re bacs odC à 7 PE Tri afin De (Joates (a cugetés 6 7 8 (e) 10 MISSOURI: ; BOTANICAL copyright reserved GARDEN D 8 9 10 MISSOURI . BOTANICAL copyright reserved GARDEN Gay, Jacques Etienne Rec. Feb. 5th Ans. Feb. 28th. Paris, January15, 1862 Rue de Vangirard, 36 My dear Doctor, One of my good friends, Mr. Durieau, from Bordeaux, excited by his discovery in France of two new species of Isoetes, is now busy with a large enterprise, which without being a complete monograph of this gender, will embrace all the species that he believes he will understand after studying the necessary materials. I did everything possible to assist him in his work, first by obtaining the information from the collection of Mr.Braun, and then in exploring myself the several lakes of Isoetes in the central plateau of France. I did this last summer, in the last fourth of my 75th. year. I also wrote in all directions to gather all the materials that could help in the systematic and the geographic portions of this enterprise. To this end I addressed, among others, the excellent Mr. Durand, whom I met in Paris two years ago, to obtain if possible, the two species that grow or in Pennsylvania or in the small states that border it: :the Isoetes riparia Engelmanni and the Isoetes Engelmanni Braun. This good man went into much trouble to obtain both of them for me in good shape and he succeeded admirably. He also took the trouble to write to you about the two supposedly different types of the,one growing in Wilmington and the other in Darby close to Philadelphia. You answered him on October 25th. He wishes to send the response about whtat I talked about with Mr. Durieau and this is what made me take my pen to write to you. You mentioned that you found the Isoetes lacustris in Echo Lake in New Hampshire. This 1s a novelty for us who have never seen American samples of this species from that Lake This you mentioned to Al. Braun (they have now been returned to Berlin). These were thought by Durieau not be different from the riparia. You have some samples and I wonder if you could cede one to us with well formed macrospores, for study. I have a sample of a Panicum, of which I talked to you about in my previous letter.It grows here in the Valmorin Gardens. It tolerates our winters well but is not able to ripen its fruits. I think it comes from Texas having the name of Mosquito Grass.It came via the Washington Board of Trade The following summarizes its principal charateristics: perennis, longissima repens, culinis ex-randica, matrice pluribus, erectis, 1-2 pedalius, simplicibus, vulparum ramosis, eulmorum nodis, glaberrimis, stolonum villosis. Please try to make known to me the name of this unusual plant. The stalks are up to 5 ft. in height in the loose soil of the garden. The leaves are a dull blue-green. Among other localities in which you have found the Isoetes riparia, you mention in your letter to Mr. Durand, Lake Winnepeseager in New Hampshire ( it is your fault 1f I have misspelled the name, 1f such 1s the case I ask you to send me the correction in your next letter). Mr Durieau has seen your samples from this location at Mr. Braun’s herbarium and he is not sure if it is the real riparia. But the study that he adds on the stunted sample / 8 9 10 MISSOURI: , BOTANICAL copyright reserved PORTE did not permit him to definitely disentangle this question. Therefore my request: would you please send us one or two chosen samples from that location. For the moment those are the limits of our desires. If you would like to and want to satisfy our wishes, please do not wait for a special occasion to make your dispatch. Use without embarrassment the mail service using cardboard that is sufficiently thick to place the samples safe from the dangers of breaking or being crushed. In exchange I will be happy to offer you the four French species ( 4 out of 7) that Mr Durieau and I collected last year. Among which are two new species that Mr.Durieau gave the name of Echinospora et Boryand. They are at your disposition, but you have to tell me the route by which I should send them. Are there some safe ones under the present conditions that Missuori finds itself? At the time when this letter 1s already folded, I received one from M. Durieu that reviews the Isoetes from Lake Winnepeseagse (?), because he saw them in Braun’s herbarium, sent by you. He has just informed me that Mr.Braun told him that he has doubts on the subject of this plant, which could be neither of the species until now described in the United States of America. But the material 1s reduced to three samples, only one good one. This 1s not sufficient to conclude this question. In regards to your zeal for the Isoetes! it would be a plant that could be collected abundantly next summer, better at the end of August than at the beginning, if one wants to have it bearing fruit well. In your letter to Mr. Durand, vou thought that germination of the Isoetes is as yet unknown. This is wrong. On this subject there 1s a nice Memoir of Hofmeister, with plates already ten years old. I have them and reviewed them recently but I am unable to find them at this moment. I would really have liked to give you its name and its date. As much as I can remember, the germination of the Isoetes lacustris, is according to Hofmeister’s observations, very similar to the Lycopodes. 14e 10 MISSOURI BOTANICAL copyright reserved GARDEN Ah L'AE | de. * rc Ars Ci Ga, PET ft GE sg 466 "À +. NE Le, À d pr pags > AOORIEE LT Ds à + : RP re Pia : 72 D: Docteer, ? Le 27 Ls FA GK « 9 1 # £ D: * Ds T'as plage. cures, > ” en 2asTo, Cr est vu T'onte a. Pañs loi. xs Did fetes ons et A + 2 éponge) ane: lettre /du 2S Pas VAE er donné Dej Zeraret an ny Lu a— Le. 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BOTANICAL copyright reserved GARDEN x eco ke FT. À es e De obtenu Bliss à er Pur | ee 2 Doug AN ehV se” -ptAs ? te EE jrevanét” Lu Cali mount and, Hey? | # : = 4 CT = d ; à 2 L * | nt, ss 1283 RS | | th ; pare d. 27 g* e Vas er 2 an Geo he RU f ii C4 € à ; Descrniphion ave Te of | Ro ærhnée inerte | he. ftp up AA TE | LR ê LA jeux eng led} a ; L Wales } i à CA et ed. uns led En dr dt Ne) y. gerer TT à 3 Dembofanaqus ge ME cle 11949 € à C1 hat Ho o— ae L Jose #o ur : + 49 MC) 3 SN, © VE2/à / ? - Éndanf 7. À , ph Te OR A K'annie mcderte, en 1861) O1, 107 D tes 1 dr Ezcuhpier DjAhiquen A Hub - | Lefrons De U5 de psg De D line lohPe tr 6% gere pire (Dr ées # MA, D ns n'en 8l [226 PS Las À pr 09 * ns À pit Se F? Guen Heu ps Ryud > z Re) Vent ent VS A (Sora Leg #04 last Ne mot} ire avec vn#Ÿf > pghoranss 4 PA Ut | À Le a | 272 ep Tjnur ce que lEsnape «PR mn 24 ya tr TA eu: HRÉCN TL FS - LEut. vof AL R Ke du cor: DT 7,1 Rpous eur Z Arte de | | & à sr LEttment Env Lg PRE 722 Dent tee IEEE. 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TR 2) fo rater. aucane# | % Fi re: | 2e Dewe à RS Liver FDL tk: pe: CINE » | ; A ja ST Hi F7 8 277 oi 3 %. , ÉRT ogg 24 | ra Ai fete Laon age É , é CR 4 3 + Bros. avons Le Rp 2e} ” À amas Des Dé lactsteis RTE Fu 4 nil L 4 p CA » ee C ; : é AR À 2 Ly Puop” ee 19e 709 ur Rd Line ar À. | re oi espere À Te ATEN tra De pose D dulse | TS ST LAN où ns « f ru 0 WE DE prom ve LD nte Le A À ES ee ÉprRs Es Me CES S ve Les CRE Lu éf re La Na = cd che Docteurs se NS es ein ex ne ex eple, ta Le ad. vous + mers va Conauique Do en tommengents 2 À HA, Lugaluame de Buvtons en alet* | Repas \ "08 er Way ne Da D SR TS CT ei Li TOUT Ed Des d pa MISSOURI: " BOTANICAL copyright reserved CrReOoUnN Gay, Jacques Etienne Rec. May 14 Ans. Aug. 25 Paris, April 24, 1863 My Dear Doctor, You complain about me and you are absolutely right as it is a shame that | did not answer your last letter for such a long time. The letter of February 28, 1862 gave me very valuable information and it also gave me evidence of your good friendship. It is true that ! could explain my long silence by very plausible reasons, but they would not justify my fault and | would rather admit my guilt that engage in an insufficient defense. To start, many thanks for your information on the Panicum obtusum HBK. You will agree that it is for me nearly impossible to determine through books because they do not mention it, that it has very long with strong blades, In regards the Gramineas, |! would like to tell you that | found both sexes in your Buchloe dactyfoides in the Drummond collection Ill, under two different numbers: # 359 femina and # 378, mascula. Let us now talk about the Isoetes that occupy my interest with great enthusiasm, together with our friend from Berlin, Mr. Braun, from Bordeaux Mr. Durieu and Mr. Cagliari in Sardinia. The latter published last year, in a scientific journal of Genoa, the monograph of the Italian species divided into three genders! This, in parenthesis, seemed to us to be totally absurd. Braun published the same year, 37 pages under the title of “Two Types of German Isoetes” ( Isoetes lacustris and echinospora), with an appendix where he described 7 new species: one from the East Indies, one from Japan and five from South America. The previous year, 1861, | published “A Botanical Excursion to the Aubrac and at Mount Dore”. There 1 found many questions about the Isoetes lacustris and echinospora and their morphology. Finally, Babington published during that same year, 1863, a description with colored drawings of the English Isoetes echinospora, that he and | picked together in the mountains of North Wales in August 1862. The publication was included in the first edition of the new Botanical Journal that Dr. Seerman directs in London. He mentions with regret, a fifth Isoitic opuscule, illustrated for the author by Sir William Jackson Hooker, which is just as pitiable. It is in the first portion of the Journal of British Ferns, in which two species of english Isoetes (with the names of de lacustris and de Duriaei) are described and illustrated with a gross ignorance of the morphology and synonymy that already had been described by Babington. That is all the information that Europe has in regards the Isoetes in the past two years. Braun surely must have sent you “The Two Types of German Isoetes”. If he has not done this | could supply it to you but you would have to write to me about the subject afterwards. At the same time | could also send you my short work of 1861, which | have neglected to do before.in regards to the north Amercan Isoetes, you know through the great Elias Durant, that thanks to him we are now perfectly provided with the two Pennsylvanian specimen: the riparia and the Engelmanni. 7 8 9 10 MISSOURI. , BOTANICAL copyright reserved CARDEN 2 Durieu recognized a 3rd species in a unique sample from the herbarium in Philadelphia. He informed us of this and we sent it back. It comes from the Catskill mountains and New York. We do not know who collected it. A fourth species is found in Clinton, lowa from where it was sent to Gray by Dr. George Vasey under the name of Isoetes Engelmanni. In Athens, II. it was also found and collected by Mr. E. Hall who wrote about it to our friend Durand. It had the same name of Isoetes Engelmanni. | have a sample sent by Gray and | have shared with Durieu the 5 samples sent to me by Durand. It is the only North American species known until now that is in water only in the winter, but lives at the other times of the year, completely dry and does not bare fruit until the water recedes completely. It has no similarity with the Isoetes Engelmanni as was described by Braun, nor with the Engelmanni from Wilmington, Delaware and the environs of Philadelphia. It is very remarkable among other things, because of its macrospores, that | believe are smooth ( laeves, tuberculis, carentes), and by its foliaceous bases that are colored a strong shiny brown, this, one does not see in any other species, on living leaves. This species is surely new and I will describe it under the names of Isoetes melanopoda. Durand wrote me that he reported these plants to you but that he has never received your opinion. lowa and Illinois in the west on either side of the Mississippi is the land of the prairies, it is à land of particular characteristics and which | believe spreads all the way to your St. Louis. Therefore it is not at all astonishing that it should have its particular type of Isoetes. But which is the extent of its geographic distribution? Does it exist only in that region or is it in various? You, my dear Doctor are better situated than anyone to study these questions, and | hope you will have the honor of resolving them. From the southwest of the United States we go to the northeast, Massachusets, New Hamshire, etc. We find a region that also seems to have certain types of Isoetes, of which only one is more or less known well here. It was found last year in Boston by Mr. W. Booth in Boston in a small lake called Horn Pond a few miles from Cambridge, mostly in the small rivers that enter and that exits the lake. It lives completely submerged durins all seasons, which is not the case of the riparia, Engelmanni nor the inclanopoda. it is a type which is nearly identical with the Isoetes echinospora europea, With its finely bristled macrospores ( non tuberculous), but according to the observations of Durieu, seems to be specifically distinguished, because of its microspores. Thanks to Gray and Booth we have it dried and living. Durieu grew it in Bordeaux, where it is presently happily prospering. The northeast of your country is nearly unknown to you. In 1856 you took a trip (was it that year?), and in 2 lakes of New Hamshire, Echo Lake and Winnepesanga, you found two Isoetes which you thought belonged to two differet species: the real pelustres in Lake Echo and the riparia in Lake Winnepesanga. You sent both plants to Al. Braun, who published nothing about their state in the herbarium, in which | have not seen them. From the plant of Echo Lake that you sent me ( in your letter of February 20 1862) with a sample in poor condition, that is now in the hands of Durieu, nor he nor | were able to see anything. Therefore | have under my eyes a better sample, collected last year in the same Echo Lake, by Mr Booth from Boston. That one has nothing to do with the Isoetes lacustre and is exactly the plant from Horn Pond, of which | spoke to you in the previous 0 1 2 3 4 6 7 8 9 10 Missouri BOTANICAL cm | copyright reserved GARDEN 3 paragraph. Regarding the plant from Lake Winnepesanga, both Durieu and | will ignore it completely. The North East is therefore like the North West, full of clouds and isoistic problems waiting for your advice from Europe. It would be nice if you could furnish us with some material necessary to resolve the doubts of the extensive information available after the collection done during the good seasons. You will have little time because of your medical practice and for financial reason. Your friend Mr. Gray, who is crushed by his numerous publications, is also too busy. However he found in Mr. W. Booth from Boston, a man with spare time and good will who will go and explore this year during the best seasons, Echo Lake and Lake Winnepesange after already being acquainted with the Isoetes. Until now he was a novice at Woburn and at Echo Lake. | gave him all the information that | had and Durant wrote me that even you, were so kind as to give him all the information about your experiences at those sites. | thank you a thousand times. You understand that this Mr. Booth is the same one who sent me, not long ago dried and living Isoeted from Horn Pond, close to Woburn, Massachusetts. Even though |! was working in this manner the Isoetes, in North America, helped by a few friends, | remain no less active in Europe. For this purpose, my 76 years, went to North Wales last year. Two motives called me to do this, one being that that country is the cradle of the gender Isoetes. It is the first place on earth that furnished the samples destined to the creation of this gender. In the second place my motives were to hopefully observe, one next to the other the living plants representing in the site, the two species that | new grew: lacustris and echinospora. | had already done this one year ago in the mountains of central France. In spite of my poor legs, this goal was accomplished perfectly, thanksto the assistance of an intelligent guide and mostly to Professor Babington who came to join me at Flanbaris and who made several difficult hikes for me. The results are in the first place, that the Lacustris grows in large numbers in the small lakes in the vicinity of Snowdon and in the second place that the Isoetes echinospora is extraordinarily mixed with the lacustris, but in such small numbers that after furnishing Braun and Durieu | was only able to keep what was strictly necessary. Another unusual fact that came from the experience acquired in this voyage is that at a latitude of 10 degrees north, the maturation of the macrospores of the Isoetes is retarded by several months. Not only did | not find a single mature spore at the end of August, which is the same time as they were perfectly ripe at superior elevations in central France. Several packets were made available to me from the same place, since | returned and up to December 15. Even at this late date the spores had not matured. Therefore these two species can only be distinguished by their color which leaves many doubts. It appears however that Babington had well formed macrospores for his drawings of the Isoetes echinospora in the Seeman Journal of Botany, taking a French sample to sketch from. There it is, what | did on English soil. On the continent | wrote a great deal, on many subjects as did also Braun. In this way we acquired much information on the geographical distribution of the Isoetes lacustris and the echinospora. Now we can observe it from the Pyrenees to areas far in the north nearly up to the Artic Circle (the echinospora). However and due to our information, it is apparent that north of the 44th ré 8 9 10 MISSOURI: . BOTANICAL copyright reserved PRE Weber, F. A Received Dec. 24 . . degree, there are in Europe other species of Isoetes in addition to the two | have mentioned. There is a third one in Lake of Tocknock {in aplan & ly location mentioned by Wahlenberg for the Isoetes ss 6 Je pren ti te This one Mises qnlerénermél Récamaendétseh whose only location known up to now is MontpélferETWreRP BYE VP peer Gt han sbetssasége eur. health: I sincerelv wish Follow our example, my dear Doctor, and make yourself the expert in North American Isoetes, by finding the Is. Engelmanni in the environs of St. Louis, where it simply could not have disappeared. Please give my best regards to Mrs. Engelmann. | am your devoted J. Gay | hear with contenment that you are very happy with your George. What plans do you have for him? Will you send him to Europe for scientific studies? Groenland has passed into a certain degree of prosperity. He has married a young small woman, with no fortune, but full of wisdom and good will. He earns 3000 fr. at the Havas Agency, for 4 hours per day, 500 fr. at our Botanical Society, as conservateur of collections. Here he works one afternoon a week. He works with lessones given in the evening and with numerous literary works. | calculate that he earns about 4000 fr..it is much better than when you knew him. This is most important, because of his new paternal responsibilties. Would you please send me some smaples of Trientalis californium ( T. latifolia Hook) with its precise location and date of bloom. Lately we lost Mr. Moquin-Tandon and his Monograph of the Salsolacees. He leaves vacant a place at the Institute and at the Faculty of Medicine. We have been very worried about the health of the good Mrs. Vilmorin, who has an affliction of the chest which appears to be very serious and where we see the beginning of Phtisis, The most disagreable symptoms have disappeared, and we now have hopéë that she will survive. She spent the winter in the south west of France, where she still IS. 7 8 (e) 10 MISSOURI. | BOTANICAL copyright reserved GARDEN