Diacrium bilamellatum (Rehb.f.) Hemsley in Godman 
Diacrium indwisum (Bradf. ex Griseb.) Broadway in 
Bull. Mise. Inform. Trinidad 2 (1895) 79. 
Diacrium bicornutum (Hook.) Bentham var. indivisum 
(Bradf. ex Griseb.) Cogniaux in Martius FI]. Bras. 38, 
pt. 5 (1898) 188. 
Diacrium venezuelanum Schlechter in Fedde Repert. 
Sp. Nov. Beih. 6 (1919) 41. 
Diacrium bilamellatum (Rchb.f) Hemsley var. Reich- 
enbachianum Schlechter loc. cit. 17 (1922) 47, in textu. 
Diacrium bwalvatulum Schlechter loc. cit. 19 (1923) 
128. 
Pseudobulbs subcylindric to long-fusiform, terete, 
5-23 cm. long, up to 4 cm. in diameter. Leaves 2-3, 
ligulate-lanceolate to linear-oblong, obtuse, 5-22 cm. 
(mostly more or less 15) em. long, 6-25 mm. wide. In- 
florescence erect, up to 15 em. long. Flowers white or 
white tinged with pink or lavender, few to numerous, up 
to about 8 em. wide; pedicel stout, (with ovary) 1.5-2.5 
em. long. Bracts triangular, cucullate, acute, up to 5.5 
mim. long. Sepals concave, elliptic-ovate, acute or some- 
times subobtuse and apiculate; dorsal sepal 12-17.5 mm. 
long, 6 mm. wide; lateral sepals 10-16 mm. long, 6-8 
mm. wide. Petals short-clawed, elliptic-obovate to 
broadly obovate, acute or subobtuse, 10-16 mm. long, 
6-9 mm. wide. Lip fleshy, as long as petals, subentire 
to more or less 38-lobulate; lateral lobes small and auricu- 
late, sometimes only tooth-like, usually without a sinus; 
mid-lobe triangular-ovate, apically short- or long-acute ; 
disk above with 2 large, erect, triangular, plate-like, ob- 
tuse, hollow projections. Column 8-11 mm. long. Cap- 
sule up to 2.8 em. long. 
The type of Hpidendrum bilamellatum was collected in 
‘*Caracas’’ (referring probably to a very extensive area 
[ 93 ] 
