PLANTS ASIATICiE RARIORES. 



AMHERSTIA. 



J^EPALA 4 basi connata in tubum persistentem, apice staminiferum, suffultum bracteis duabus op|)Ositis, maxinils, 

 aestivatione valvatis. Petala 5 injequalia : duo inferiora niiiiuta, siibulato-hainosa ; latcralia cunciforinia, di^ aricata ; 

 supremum maximum, patens, obcordatum, unguiculatum. Stamina 10 diadclpba, filanicntis 9 in tubum loni^um 

 connatis, superne liberis, alternis nanis ; decimnni liberum, basi pedicello ovarii accretum. Anther.e versatiles, onnies 

 poUiniferae, alternae breviores. Ovarium stipitatum, falcatum, 4 — 6-ovulatum, stipite tube calycino adnato ; styhis 

 filiformis ; stigma convexum, parvum. Legumen pedicellatum, planum, oblongum, oligospermum. 



Systema Linna^anmn, Diadelphla Decandria. 



Ordo naturalis, Leguminosarum cohors CassiecB Dccand., Heterostemoni Desf. affinis. 



Habitus : Arbor foliis amplis, pari-pinnatis, 6— 8-jugis, floribus speciosis, digcstis in racemos maximos, axillares, 

 pedunculatos, flaccide pendulos. 



Genus dedicatum Nobili Comitissae Amberst et filiai ejus DomiiuT Sarab Amberst, in tesseram summae observantiap, 

 debits assiduitati indefessse felicique successui quibus, dum in Hindustania moratae sunt, botanicam scientiam colucrunt 

 et promoverunt. 



AMHERSTIA nobilis. Tab. l. & 2. 



Patria vlx non Martaban, provincia regni Burmanici ad oram Tenasscrim sita. Cultam tantum ol)serva\i propc 

 ripam dextram fluminis Salucn, ad urbein Martaban et ad Kogun, floribus onustam mense Martii. 

 Nomen Burmanicum Thoca. 



Arbor 30— 40-pedalis, trunco crasso, 12-pedali, cortice inaequali, ex cinereo fiiscescente, coma ampia, ramosa, frondosa. Ramuli cylin- 

 dracei, crassi, glabri, glauci ; tenelli pubescentes, laxfe penduli. Folia sparsa, patentia, approxiinata, pedalia ad sesquipedalia, abruptJi 

 pinnata, 6— 8-juga. Petiolus comnmnis teres, glaber, basi valdfe tumidus, infra jugmn priimuu bipollicaris, inde attcnuatus, 

 gracilis' rectus aequalis, ad insertionem pinnarum vix dilatatus, terminatus cuspide subulate emarcescente ; partiales breves, cylin- 

 drici crassiusculi, transversim riigosi, quandoque ad medium dorsi bracteoia muniti latiuscuia adpressa ; basi inconspicufc articulati. 

 Pinn'^ paribus 6 7 vel 8, uncias duas ab invicem distantibus oppositae, patenti-nutantes, oblongs, ba.si rotundato-acuta-, vix insquales, 

 extrorsum attenuata. in acumen gracile, lineare, cuspidatum, poUicare; planae, raembranace^, marginibus ferfe parallelis integernm^e ; 

 sunr^ saturate virides, glaberrima., opacoe ; subtCs adpress^ puberula-, valdJ; glauca-, costa gracili ner^•isquc fdiformibus elevat.s, obbquis, 

 aliQua e peripheria distantia, mediante vena arcuata usque ad imam cuspidem acuminis pinna, excurrente, pulcherrimfe anastonu,sant.bus ; 

 subtilissiL reticulato-venoss ; interiores breviores, subovats, 6-7-pollicares, exteriores sensim longiores 10-12-polbcare,s, qum ultra. 

 Folia tenera un^ cum ramulo novello pendula, flaccida, vald^ glauca, pinnis purpurascentibus, adpressJ. sencec^puberubs, condupbcat.s, 

 lon.^ acuminatis. Stipule opposita., interdum alterna., rar6 deficientes, foliacea-, lanceolata- attonuato-acuta-, uUegerrmur, subun- 

 luiculata. puberul., erects, interdum subverticales, deciduee, poUicares vel sesquipoUicares. Rackmi ommum maxnm, -a; -ut^ 

 soTtaHa^il ares, penduli, coccinei,cubitales ad tripedales, basi diametrum pedis et dim.du emetientes, p.x,ribi.s constantes 20 ad 26 

 solitani axi lares, p J pedunculatis, adscendenti-patentibus, ruberrimis, flavo-occllat.s, modons. Pkdunculus com- 



^P^"TT:;::: \:r^^ -e^^nam cn.sus!8-I0-pollicaris, vestigiis bracteanim delap.rum sparsis no.atus, 



mums teres, ^^^^^^^^^"^2^ ^„ jj,^ ^^ eolorata, ad insertionem pedicellonim par^W tuberculata, et cicatricibus bructe- 

 rhachis gracilis, subangulata,eviterunau a . j; ^um calvce bracteisque ruberrimi, 5-poUicare8, infra apicem 



arum notata. Pedicelli 1-flori, graciles, teret s, "^^^^ f /P'^^J ' P^" decurren es, subrhomboidci, basi hracfed ca.lucis- 



cylindricam, propter lineolas quatuor a commissuns et ^f "^"^.^"^^^"^^^^^^^ _,,,,,, ,^etea. aliquot vacus, per pedun- 



sLa, pallid^ viridi, lanceolata, acuminata pubescente, ad ^^^^^^T^C^ ^., divaricato-patenti.iml, dem.m .flex., lan- 

 culum communem spars., citissim^ evanids. Brace. ^^^^^^^^^^^^^^ Z et dimidium longce, coriace., 



ceolats, acuts, integerrims, pariim insqmlaters, margine altero nemp^ rectiore, p P 



15 " 



