Dendrobium. 267 



Labellum spathulatum, oblongum v. subrhombeum. 



— Flores albi 517. D. platygastriiim. 



ß. Labellum brevi-unguiculatum. 



Mentum obtusum bisaccatum. — Flores sicci lutei. 



(Planta parva v. mediocris) 518. D. lamellatum. 



b. Mentum curvatum. 



Labellum unguiculatum, antice subquadratum ; mentum 

 elongato-conicum. — Flores pallide rosei, labellum 

 album 519. D. Goldßnehii. 



515. D. platycaulon Rolfe in Kew Bulletin (1892) 139 et in Gard. Chron. 

 (1892)11. 150. — Pseudobulbi valde compressi, ancipites, lanceolati, circa 3— 5-foliati, 

 10 — 18 cm longi, 2,5 — 3 cm lati. Folia oblonga v. elliptica, acuta, 6 - 9 cm longa, 

 2,5 — 3 cm lata. Racemi breves, 3 — 6-flori, bracteae trianguläres, acutae, 2 mm longae, 

 pedicelli 1,3 — 2 cm longi. Sepalum dorsale lineari-oblongum, obtusum, lateralia sub- 

 similia, mentum obtusum, aequilongum Formantia. Petala paulo latiora. Labellum 

 late unguiculatum, lobi laterales rotundati, intermedius late oblongus, emarginatus; discus 

 leviter tricarinatus in medio. Gynostemium brevissimum. — Flores straminei, sepalum 

 dorsale petalaque 1,5 cm longa, sepala lateralia 3 cm longa. 



Provinz der Philippinen. — (Von F. Sander eingeführt). — Exam. spec. cult.! 



516. D. Treubii J. J. Smith, Orch. Ambon (1905) 65 et in leon. Bogor. HI. 

 (1906) 29 t. 212. — Caules e basi tereti incrassati, dilatati et compressi, ad 45 cm longi, 

 ad 3,5 cm lati, pauci- v. pluriarticulati, foliosi. Folia decidua, oblonga, laxa, undulata, 

 7 — 9-nervia, 5 cm longa, vaginae breves, internodia non aequantes, pallidius nervosae, 

 antice late apertae. Racemi e nodis superioribus Orientes, 5 — 6-flori, circ. 6 cm longi, 

 bracteae triangulae 3 mm longae. Sepalum dorsale ovato-lanceolatum, acutum, late- 

 ralia obtusangulo-triangula, acuta, extus carinata, postice mentum satis longum, conicum, 

 curvulum, ex apice ad l / i longitudinis clausum formantia. Petala lanceolata, acutius- 

 cula, extus sulcata. Labellum pedi gynostemii parallelum, unguiculatum (unguis linearis 

 excavatus), trilobum, late canaliculatum, lobi laterales erecti, late trianguli, obtusi, 

 concavi, lobus intermedius oblongus, marginibus parallelis, obtusus, undulatus, lineae 

 elevatulae in disco 7 — 9 obscurae. Gynostemium breve crassum, stelidia magna, ob- 

 tusa, obscure denliculala, fllamentum longum, fovea stigmatica rotundato-quadrata, 

 pes gynostemii leviter concavus, angulum rectum cum ovario efflciens, cum ungue la- 

 belli connatus et pseudocalcar in mento occultatum efficiens. — Flores aperti 6 cm lati, 

 per plures dies vigentes, sepala flavescenti-alba, nitida, dorsale 2,9 cm longum, 1 cm 

 latum, lateralia 3,10 cm longa, petala alba, sepalo dorsali aequilonga, 9 mm lata, labellum 

 expansum 4,5 cm longum, 2,10 cm latum, in disco purpureum, lineae elevatae inten- 

 siores, lobi laterales albi, intus plus minus purpurei. Gynostemium album. 



Centromalayische Provinz: Ceram bei Wahaai (Treub). — Ambon (War- 

 burg!); Hotoetoe Mortoetoe (Smith). — Exam. sicc. cult. 



Nota. Habitu accedit haec species ad D. lamellatum Und], a quo differt statura majore, 

 floribus majoribus in racemos pendulos dispositis. 



517. D. platygastrium Reichb. f. Otia Hamb. (1878) 55. — D. lamprocaulon 

 Schlechter in Schum. et Lauterb. Nachtr. Fl. Deutsch. Schutzgeb. (1905) 166. — 

 Caules pseudobulbosi, rhizomati brevi insidentes , e basi teretiuscula erecti, applanati, 

 compressi, elliptico-oblongi, 5 - 8 cm alti, 2,5 — 3 cm lati, nitidi, supra foliati. Folia 

 3—4 mox decidua, oblonga, apice inaequali- et obtuse biloba, tenui-coriacea, 5 — 7 cm 

 longa, medio 1,8 — 2,5 cm lata. Racemi laterales pauciflori (2 — 3), bracteae parvae, 

 triangulae, acutae, quam Ovaria multo breviores. Sepalum dorsale oblongum, obtuse 

 acutatum. Petala aequalia, subobliqua. Sepala lateralia antice dorsali aequalia, postice 

 mentum elongatum formantia. Labellum e basi lineari longa spathulatum, antice sub- 

 rhomboideum, obscure trilobum, lobi laterales breves late trianguli, obtusi, intermedius 

 multo major, praesertim latior, medio apiculatus, lamellulae 2 et e basi apicem usque 



