60 Materials for a Flora of the Malayan Peninsula. 



Flowers small glabrous. 



IJacome cleciirved . . . . . . 2"). B. alcicorne. 



§ 6. Dkxsifloka. Kaceme dense. 

 reduiiL-le very long . . . . . . , . 2(3. B. gigus. 



Eacenie dense, peduncle short. 



Pseudol)ull)s absent, i-aceme very 

 small .. .. .. ., 2"). />. bolri/ophonini. 



rseudol)ulbs present. 



Flowers pubescent . . . . . . 28. Z?. (ri folium. 



Flowers glabi-ous. 



Leaf oblong ol)tuse . . . . 29. 7?. lilacinum. 



Leaf lanceolate acuminate . . 30. B. densi/iorum. 



§ 1. TxTERVALLATAE. Scape tall wiry, 

 racliis thickened with persistent bi'acts. 

 Flowers numerous opening singly at long 

 Intervals. 



Flowers never opening . . . . . . 31. B. stelln. 



Flowers widely expanded .. .. '.\2. B. cleifitogamurn. 



§ 8, OxYSEPALUM. Stems long pen- 

 dent from a rooting base. Pseudobulbs ap- 

 pressed to the stem. Flowers small thin 

 solitary or several on a short peduncle en- 

 closed in a sheath. 



Steuis very slender much branched \Vi. B. clandesiinuin. 

 Stems stout, pseudolnilljs large . . ;il. B. (iiiiihduiit. 



§ 9. BiPiiYKS. Khizome creeping. 

 Pseudobulbs large, small or obsolete. Ka- • 



cemes short or long. Flowers thin small 

 yellow or orange. Sepals subequal lanceo- 

 late acute. 



Eacemes short, flowers few at the end 

 of the scape. 



Scape very short hidden in sheaths 

 Scape slender short. 

 Sepals equal acute 

 Sepals unequal obtuse. 



Bases not gil)bous 



Bases gilibous 

 Sepals acuminate white .. ,. 39. B. ochranlliunt. 



