Bad Journal of the Asiatic Society of Bengal. { August, 1906. 
The following hora key is an attempt to facilitate the recogni- 
tion of the species 
Lip stipitate— 
Leaves large, 7-20 cm. long 
olumnar spurs stout ... B. leopardinum. 
Columnar = spurs long; 
faleate . B. membranifolium. 
Leaves see less than 7 cm. ‘long 
seudo-bulbs ovoid; flow- 
ers 25 cm.indiam.... B. Griffithit. 
Pseudo-bulbs pisiform 
flowers 8 mm. in Bier B. moniliforme. 
Lip sessile, trigonous— 
Flowers ciliate ; petals 
re a .» B, Dayanum. 
Flowers eciliate ; petals 
white... .. B. Burkill. 
Of the Burmese species, B. Burkilli is nearest to B, Dayanum 
agreeing with it in the size of leaf, the absence of a scape, the 
short columnar teeth. B. Burkilli is, however, a smaller plant 
than B. Dayanwm, and has smaller flowers than the latter. Of 
ae Siamese species so far described B. monanthos, Ridley, (Journ. 
inn, Soc 
a lanceolate flat lip, yellow with a purple spotted base. Although 
or Indian botanists who may confine themselves to the Flora of 
