50 cxxxvi. ORCHIDE^E. [Dendrobiutn. 
which is a semi-lunar callus, limb obovate apiculate. Hab. Perak, 
no locality given (Kunstler). 
(59) D. megaceras Hook. fil. F.B.I. v. 731; Ic. PL 2031; 
Ridl. Mat. i. 54. 
Stems slender, 2 ft. long, internodes 1 to 1-25 in. long. Leaves 
oblong-lanceolate acuminate, 3 to 4 in. long, -75 to 1 in. wide. 
Racemes short. Flowers few, 1*5 in. long, yellowish. Sepals 
elliptic-oblong blunt; mentum 2 or 3 times as long, cylindric nearly 
straight, pinkish. Petals obovate. Lip cuneate, 3-lobed, claw 
gradually dilate to limb, an elongate keel at base, side-lobes sub¬ 
truncate crenulate, midlobe sub-orbicular retuse crenate. Hab. 
Malacca, no locality (Maingay). 
Near D. subflavidum Ridl., but the flowers are rather smaller and lip 
crenulate ; mentum somewhat clubbed blunt. 
(60) D. exilicaule Ridl. D. tenuicaule Ridl. Journ. Roy. i 4 s. 
Soc. S. By. 39, p. 73 (not of Hooker). 
Stems very slender, weak, 1 ft. long. Leaves linear-lanceolate, 
3 in. long, -25 in. wide. Flower one, 75 in. wide. Pedicel and 
ovary *5 in. long. Sepals ovate acute; mentum 75 in. long, 
cylindric, tip recurved acute. Petals broad ovate. All pink, tips 
darker. Lip clawed, long and narrow, side-lobes broad upcurved, 
midlobe ovate shortly bifid, edge crisped, white with pink central 
lines. Hab. Lankawi, Ayer Hangat (Curtis). 
(61) D. kentrcchilum Hook. fil. F.B.I. vi. 731; Ic. PL 2030. 
Stems rather stout flexuous. Leaves broad elliptic coriaceous 
blunt, base very shortly narrowed, 3 in. long, 1 in. wide. Flowers 
•34 in. wide, cream colour. Upper sepal ovate blunt, laterals 
oblong blunt larger; mentum -36 in. long. Lip obovate slightly 
trilobed, claw medium with a retrorse spur. Column arms erect 
curved acute. Hab. Very rare. Perak, Batang Padang valley at 
2000 ft, altitude (Wray). 
Near D. sanguinolentum, but the leaves are quite different, the flower 
smaller, and the mentum short. 
(62) D. sanguinolentum Lindl. Bot. Reg. 1842 ; Misc. 73, 1843, 
t. 6 ; Ridl. Mat. i. 55. 
Stems fairly stout, 1 to 2 ft. long, flexuous. Leaves lanceolate 
sub-acute, 2 in. long, 75 in. wide. Racemes 1 to 1*5 in. long. 
Flowers 4 to 6, showy, 1 in. across. Sepals ovate blunt, -2 in. 
long; mentum 75 in. long, terete, tip dilate curved. Petals broad 
ovate blunt, -5 in. long, all cream colour, tipped violet crimson. 
Lip shorter, base narrow with a reflexed spine-like callus, limb 
suddenly dilate, quadrate-round, edge waved, cream colour tipped 
violet-crimson with a central yellow patch. 
var. D. ccrinum. D. cerinum Rchb. fil. Gard. Chron. xii. 554. 
Flowers entirely yellowish ochre. Both forms grow together on 
trees at about 2500 to 3000 ft. altitude. Hab. Selangor, Semangkok 
Pass. Penang Hill (Curtis). Kedah Peak. Distrib. Borneo. 
