82 cxxxvi. orchide^e. [. Dendrochilum. . 
(1) D. album Ridl. Journ. Linn. Soc. xxxii. 287; Mat. i. 85. 
Bulbophyllum pteriphilum Rolfe, Kew Bulletin 1894, p. 391. D. 
pallidiflorum (flavens) Hook. fil. F.B.I. vi. 782, not pallidiflavens Bl. 
Pseudobulbs conic, 1 in. apart, 1 in. long. Leaf elliptic-lanceo¬ 
late blunt, 3 to 4 in. long, 75 to 1 in. wide; petiole -5 in. long. 
Racemes slender, 1 in. long, with membranous bracts at base. 
Flowers numerous white. Sepals sometimes tipped orange, *25 in. 
across. Bracts very small. Sepals linear blunt, tips thickened. 
Petals similar smaller. Lip shorter lanceolate sub-acute, keels 2. 
Column arched, upper edge prolonged lanceolate retuse, arms linear 
acuminate. Hab. Mountains, common. Selangor, Gunong Semang- 
kok. Perak, Thaiping Hills, Gunong Hijau (Kunstler, etc.); 
Ulu Bera (Kunstler); Gunong Kerbau at 6000 ft. altitude (Robin¬ 
son). Distrib. Tenasserim, S. Siam. 
(2) D. angustifolium Ridl. Journ. Roy. /Is. Soc. S. Br. 39, 
p. 77; Mat. i. 85. 
Rhizome stout; pseudobulbs 1 to 1-5 in. apart, sub-cylindric, 
'5 to 75 in. long. Leaf narrow linear-lanceolate, 2 in. long, -25 in. 
wide, blunt. Raceme solitary or several on a stout short peduncle 
3 to 4 in. long. Flowers greenish white, *12 in. long. Bracts ovate 
sub-acute, half as long as ovary. Sepals linear-lanceolate. Petals 
narrower. Lip narrow lanceolate blunt, 2 thick ridges at base and 
a lower one between. Column short, upper edge hooded minutely 
toothed, arms linear from near base. Capsule sub-globose ovoid, 
3-angled, *5 in. long. Hab. Mountains, Pahang, K’luang Terbang 
(Barnes); Gunong Tahan. Selangor, Bukit Hitam (Kelsall); 
Gunong Mengkuang Lebah (Robinson). Perak, Gunong Kerbau 
(Robinson). 
(3) D. spathulatum Ridl. Journ. Roy. As. Soc. S. Br. 50, 
p. 134. 
Rhizome much branched, slender; pseudobulbs cylindric, 1 in. 
long, *i in. through. Leaf elliptic-lanceolate blunt, abruptly 
narrowed at base, 2 in. long, -5 in. wide. Raceme 2 in. long, flori- 
ferous to base. Bracts minute ovate. Flowers -i in. across. 
Sepals linear blunt fleshy. Petals shorter. Lip less than half as 
long oblong at base with 2 keels, tip sub-spathulate round. Column 
very short, hood oblong as long as the rest of the column, arms 
from near anther lanceolate subulate, as long as hood. Capsule 
•5 in. long and nearly as wide, turbinate triquetrous. Hab. Pahang, 
Tahan River (Ridley). Distrib. Sumatra. 
(4) D. crassum Ridl . Journ. Linn. Soc. xxxii. 288; Mat. i. 85. 
Rhizome *25 in. thick; pseudobulbs cylindric, *5 in. long. Leaf 
elliptic blunt, thick, 4 in. long, 1*5 in. wide; petiole -25 in. long. 
Raceme 3 to 4 in. long, entirely floriferous. Bract ovate-lanceolate, 
two-thirds the length of pedicel. Sepals oblong blunt fleshy, -12 in. 
long and as wide, green. Petals obovate blunt, green. Lip white 
pandurate, tip broad obovate, 2-keeled. Column-foot very short, 
