ORCHIDACE^ 



Rep. Beihefte 1 (1911) 98. Nephelaphyllum scapigerum Hook.f. 

 Bot. Mag. (1863) t. 5390. 



Tenom, Gibhs '288^, January 1910. On hills above 2000 feet altitude in 

 high forest. 



13. NEPHELAPHYLLUM BL 



Six species referable to this genus have been recorded from 



Borneo. 



I. Nephelaphyllum flabellatum A. c^ S. sp. nov. Herba ter- 

 restris, parva. Caulis e basi decumbenti adscendens vel flexuosus, 

 vaginis laxis papyi'aceis omnino obtectus. Radices paucae, ex in- 

 ternodiis orientes, densissime albo-lanuginosae, sulcatae. Folia 

 circiter tria, ovato-cordata, paulo obliqua, obtusa, mucronata, in 

 visu tenuia, quinquenervia, nervis majoribus subtus carinatis. 

 Rachis brevis, pauciflora. Bracteae patentes, conduplicatae, late 

 ovatae, acutae, papyraceae. Flos erecto-patens ; labellum erec- 

 tum; sepala petalaque conniventia, decurvo-circinnata. Sepala 

 linearia, mucronata, uninervia. Petala lineari-lanceolata, apice 

 oblique rotundata et mucronata, trinervia. Labellum calcaratum, 

 flabelliforme ; unguis cuneatus, plus minusve subito in laminam 

 dilatatus, sulcatus, basi in medio carnosus et pubescens ; lamina 

 late flabellata marginibus undulatis, extensa paulo emarginata, 

 prope apicem in medio fasciculo papillarum verrucosarum or- 

 nata; calcar subgloboso-cylindraceum, extus sulco circumdatum, 

 intus constrictio carina notata. Gynostemium in parte superiore 

 praecipue latius alatum. Ovarium alis sex conspicuis praeditum. 



Stem up to 10 cm. tall, ascending or flexuous from a decum- 

 bent, slightly thickened lower portion, entirely concealed by 

 loose, imbricating, papyraceous sheaths. Roots apparently sparse, 

 rising from the internodes, densely white lanuginose, longitudi- 

 nally sulcate, about 1.5 mm. thick, irregularly flexuous. Leaves 



[ 19] 



