42 ORCHIDS OF THE SIKKIM-HIMALAYA. 
Column and its foot flat; the latter elongate and with a narrow  nectar-secreting 
cavity at its extremity; mentum long, blunt. Ат е” with a truncate lip; pollinia 
onneate, the individual masses clavate. Willd. Spec. Plant. IV, 136; Roxb. КІ, 
Ind. III, 487; Walp. Ann. VI, 279; Hook. fil. Fl. Br. Ind. V, 724.  Aperum 
anceps, Lindl. Gen. and Spec. Orchid. 71 (ec. сй. Wali); Bot. Reg. t. 1239; 
Bot. Mag. t. 3608; Lodd. Bot. Cat. t. 1895; Griff. in Cale. Journ. Nat. Hist. 
V, 368. 
Sikkim-Himalaya, in the bottoms of tropical valleys, Hooker and others; Pant- 
ling No. 258; iu flower during April and May. Assam, the Gangetic Delta, 
Burmah; also in the Andaman and Nicobar Islands. 
Puare 54.—Dendrobium anceps, Swartz. Plant, of natural size. Fig. 1 а flower, 2 floral braet, 
sub-sessile ovary, column and its foot, seen from the side, 9 upper surface of lip 4 column and its 
foot, 5 anther, 6 pollinia; all enlarged. 
2. DENDROBIUM TERMINALE, Par. and Reichb. fil. in Trans. 
Linn. Soc. XXX, 149. 
Stems terete and very slender at the base, flattened upwards, 4 to 6 in. long 
and “2 to “25 in. broad. eaves fleshy, showing no nerves when fresh, oblong-elliptic, 
sub-acute, the base broad and equitani; length 74 to °75 in., breadth :2 to :3 in. 
Flowers *5 от °6 in. long, terminal, solitary or in racemes of two, white or pale 
pink ; floral bract lanceolate, much shorter than the pedicelled ovary. Szpsls unequal, 
the lateral pair three times as large as the dorsal, elliptic, falcate, sub-acute, 
3-nerved; the dorsal ovate. Petals elliptic, blunt, about as long as the dorsal sepal 
but narrower, l-nerved. Гір cuneate-triangular (when spread out), deflexed about the 
middle, the sides entire, the apex broad, sub-undulate, minutely erose, slightly 
bifid. Column short; its foot six times as long as itself, broad, curved, and with an 
oblong greenish callus near the lower end. Mentum broad, blunt, very long. Lip of 
anther truncate, erose; pollinia oblong. Capsule ovoid, “35 in. long. Hook. fi. Fl. 
Br, Ind. V, 725. 
Tropical valleys in Sikkim; Pantling No. 236; in flower during September and 
October. Tenasserim; Parish. Malacca? 
The flowers of did are either white or very pale pink, and the mentum has 
pink nerves. The lip has a thickened yellow line running along the middle of its 
upper surface from base to apex. Hitherto. this species has not been recorded from 
Sikkim. 
Рілте 55.—Dendrobium terminale, Par. and Reichb. fil. A plant, of natural size. Fig. 1 flower, 
Front view, 2 lip, 3 floral bract, stalked ovary, column and its foot (showing the oblong callus near 
the apex of the latter), 4 view of inside of an empty anther, 5 pollinia; all enlarged. 
8. DENDROBIUM BICAMERATUM, Lindl. in Bot. Reg. 1839, misc. 85. 
Stems clavate or fusiform, elongate, 3 to 18 in. long and :35 to “5 in. thick 
at the thickest part (but less when mature). Leaves elliptic-oblong to elliptic- 
lanceolate, the apex acute and obliquely and minutely bifid, 1:5 to 3 in. long and 
Тә to J in. broad. Flowers *& ‘in. across, yellow marked with red, densely clustered 
on a short rachis and forming a capitate lateral or sub-terminal raceme; Дога] bract 
