25 



longiora 5-6-polUcaria, coriacea, laevia, opaca, utrinque minutim punctulata, supr^ atro-viridia, parfmi bullata, subtis pallida, costa 

 nervisque eopiosis, prommentibus. Petiolus brevis, semipollicaris vel par6m nhvh, supra sulcatus. Racemus terminalis, nudus 

 palmans, oblongus, constans floribus magnis ex viridi albidis, purpureo-guttatis, disposltis in fascicules trifloros, oppositos, remotius- 

 culos, pedicellatos, superioribus oppositis solitariis. Pedunculus communis teres, glaber ; pariiales pedicelliqne fuscescentes. Bracte* 

 lineari-lanceolatse, patentes, oppositae, ciliatse, pedicellos sequantes. Calyx ovatus, subcarnosus, purpurascens, puberulus ; dates \nn- 

 ceolati, acuminati, ciliati. Corolla tubus sfemiunguicularis, leviter ventricosus, calyce paull6 longior, minutim pubescenti-glandulosus. 

 LiMBUS patens, tubo par^m longior, bilabiatus; labium superius erectum, obovatuni, apice obtusfe bilobum, lobis ovatis lateribusque 

 recurvatis, posticfe concavum albidum, antic^ maculis purpureis ornatum ; labium inferius patens, tripartitum, lobis ovatis, obtusis. 

 FiLAMENTA carnosa, basi crassiuscula, curva et pubescentia, erecta, demtim divaricata, exserta, labio corollse superiore parfim breviora. 

 Anthers oblongae, carnosse, viridescentes, dorso convexae, nudai, leeves, parallels, demum lateraliter deflexte, anticfe loculis angustis, 

 parallelis, sequalibus, valdfe approximatis. Preeterea stamina 2 sterilia, subulata, fauci, inter labia inserta. Stylus pubescens, staniinibus 

 pariim brevior ; stigma obtusum. 



Plate XXVIII. Fig. I. Flower, immediately after expansion. 2. The same, in a more advanced state, after the stamens have be- 

 come divaricated. 3. The same, seen from behind. 4. Corolla opened. 5. Stamen. 6. Calyx opened, showing the pistil. 



DENDROBIUM amplum. Tab 29 



Rhizomate repente, squamoso, pseudobulbos ovatos, squamosos, diphyllos gerente ; follis ovato-oblongis, emargi- 

 natis, petiolatis; floribus solitariis, longe pedunculatis, axillaribus, e bracteis duabus oblongis, petaloideis provenientibus; 

 sepalis ovatis, acuminatis ; petalis angustioribus ; labello sessili, trilobo, medio lamellato, lobis lateralibus abbreviatis 

 rotundatis, intermedio ovato, crenulato, acuto. Lindl. A^SS. 



Dendrobtum amplum, Lindl. in Wall, catal. herb. ind. num. 2001. 



Inveni in monte Sheopore Napaliee, arborum rupiumque parasiticum, florens sub pluviis. 



Orchidea magna et speciosa, omnibus partibus glabra. Rhizoma longissimum, teres, gracile, sublignosum, fuscum, Iseve, indutum 

 squamis aridis, adpressis, alternis, imbricantibus, ovatis, acutis, lineatis, unguicularibus, magnitudine versus pseudo-bulbos increscentibus, 

 tardiils deciduis ; dem^m nudum, per plures pedes super arboribus saxisve, o^& Jibrarum radicaVmm teretium, e basi pseudobulborum 

 provenientium, subfasciculatarum, serpens. Pseudobulbi 3 ad 5 poUices ab invicem distantes, alterni, ovati, firmi et sublignosi, Iseves, 

 nitidi, pollicem duosve longi, obtusi, vertice 2-phylli, obtus^ 3- vel 4-angulares, ^gwaww aliquot magnis distich^ imbricantibus, ovatis, 

 acutis, pollicaribus deors^m sensim decrescentibus, et in squamas istas rhizomatis abientibus ; oetate nudi et basi tantCim a rudimentis 

 squamarum fibrosi. Folia 2, erecto-patula, ovato-oblonga, utrinque acuta, apice 2-denticulata, coriacea, lucida, tevia, 4— 6-pollicai-ia, 

 supr^ atro-viridia, nervoso-lineata, subt^s pallida, desinentia mpetiolum poUicarem, sulcatum, rigidiusculum, basi leviter dilatatum. Flores 

 magni, speciosi, solitarii, long^ pedunculati, ex apice pseudobulbi inter petiolos provenientes, patentissimi, diametrum ferfe 4-pollicarem 

 emetie'ntes, vix apicem foliorum attingentes, e viridi-fuscescentes, purpureo-punctati, lobello fusco, inodori. Pedunculus cylindricus, 

 ovario partim brevior cumque illo tripoUicaris, fevh occultus bracteis duabus oppositis, laxiusculJ; erectis, oblongis, planis, acutis, deorsi\m 

 pariim angustioribus, parallelis, foliis directione contrariis, membranaceis, sesquipoUicaribus ; aliis parvis pr^tere^ intenoribus ad basm 

 pedunculi, et terminali ad apicem ejus solitaria, lanceolata, unguiculari, basin ovarii vaginante. Sepala patentissima, eequalia, e bas, 

 ovata lata elongato-attenuata, acuminata, fer^ 2-pollicaria, integerrima, viridescentia, supr^ punctis lineolisque fuscis notata, latenbus 

 revolutis- postica subfalcata, infra columnam connata et plana. Petala sepalis angustiora, sed longitudine eadem aequantia, hnearm, 

 attenuato-acuminata. Labellum sessile, sepalis dimidib brevius, basis subinfundibuliformis marginibus erectis, convexo-subfalcatis, ob- 

 'tusis, purpureo-guttatis, fundo 3-cristato, cristis parallelis, nudis, intermedio breviore ; lamina lato-ovata, patente, acuta undulato-cnspa- 

 tuia Li nndl, reticulata, flavido-marginata. Columna semicylindrica, labello dimidi^ brevior, antic^ plana, basi valdfe dilatata parum 

 producta. Anthera terminalis, ovata. Mass^ pollinis 4, cereace^, ^quales, per pares coUaterales. OvARruM subcyhndricum, 2-pollicare. 



" This is one of the transitions from Dendrohmm to Bolbophyllum, agreeing in habit with some species of the 

 latter genus, and in fructification more with the former, but not exactly with either." Lmdl MSS^ 



For the specific character and observation given above I am indebted to my niestimablefnend Professor Lmdley 

 who has undertaken, and in a great measure accomplished, the elaboration of the famdies of OM. Rosace., and 

 Zentace. in my possession ; and from whom I have, besides, derived constant and importan aid m the prosecution 



he sincere tZ and gratitude whleh I entertain towards that eminent and h.ghly aeeomphshed botan, t 

 OrXnt Tah^s a very large si^, and is eertainly one of the most beautiful of the genus to wluch .belongs. I 

 Uui plant attains d veiy laig. , j hi<'hest mountains, which surround 



:;:;:; X "1", -* Tti ';:1X rri,r^.. ■■ .- - - --•■ - - 



duces its large flowers towards the latter end of the rainy season. . 

 . Plate XXIX. Fig. 1 . .Flower dissected ; the labellum expanded, with a portion of the column attached. 



