236 ORCHIDS OF THE SIKKIM-HIMALAYA. 
attached by their backs in pairs to a long caudicle broad above but tapering to a 
small gland. Species three, all Indian. 
Lindley’s original description of this genus, as regards the structure of the lip, is not in harmony 
with the specimens on which he founded it. This is no doubt on account of his having worked on 
Herbarium material. We have therefore modified it and, as now defined, the genus differs from Camarotis 
in having a terminal, not a dorsal, anther ; and also in having a spurred, distinctly 3-lobed lip, instead 
of a lip consisting almost entirely of a sac with very small obscure side and apical lobes and no spur. 
Glabrous, flowers “9 in. across . à £x 3a Cu ЕЕ E а 
Inflorescenco pubescent, flowers 75 i Bb Uh ovs olx UV Д WE 
1. STEREOCHILUS BICUsPIDATUS, King and Pantling. 
Siem 8 or 4 in. long, with very numerous roots at the base. .Leaves coriaceous, 
narrowly oblong, deeply and obliquely bilobulate at the apex, the lobules often erose; 
length 3:5 to 6 in., breadth :8 to 1 in. Jnflorescence from the stem below the leaves, 
slender, . glabrous, M longer than the leaves; the peduncle with a few minute 
distant sheaths. Flowers in racemes or к ЖК panicles, numerous but not 
crowded, °З in. across; floral bracts minute. Sepals sub-equal, spreading, the dorsal 
obovate-elliptic, the lateral pair broadly elliptic. Petals oblanceolate, blunt, oblique, 
smaller than the sepals. Zip as long as the sepals, adnate to the column; the base 
with a spur nearly as long as and parallel to the ovary, cylindric towards the blunt 
non-dilated apex; the mouth infundibulate, its edges with broad rounded erose side 
lobes; the apical lobe broad, ovate, concave, acute; the interior of the spur with a 
smooth callus below the column and a much larger one on the anterior wall below 
the mouth, the two calli touching and occluding the entrance to the spur. Column 
short, thick; the rostellum long, bent to one side and slightly hooked at the apex. 
Anther depressed and with a long beak in front; pollinia four, orbicular, compressed, 
attached by pairs; the caudicle thickened in the middle, tapered at the apex, and also 
at the base to the small oval gland. Capsule cylindric, ridged, “5 in long. Cleisostoma 
bicuspidatum, Hook. fil. Fl. Br. Ind., VL, 75. 
Sikkim, at elevations of about 2,000 feet; in flower during July and August; 
Pantling No. 178. Кһаѕіа Hills; Mann. Tenasserim; Parish. 
The flowers are yellowish, marked with pink along the midribs of the sepals 
and petals and on the lobes of the lip. The rostellum is long and twisted, and the 
pollinia are attached to the sides of the apex of the caudicle as in Stereochilus hirtus. 
In Cleisostoma, to which Sir Joseph Hooker (deceived no doubt by the drawings of the 
native artists of the Calcutta garden) referred this plant, the rostellum is shorter 
and quite straight; moreover the pollen-masses are attached behind the apex or at the 
extremity of the caudicle. We have therefore ventured to transfer this species to 
Stereochilus. Тһе Sikkim plant differs, however, from the Khasia plant figured by 
Sir Joseph Hooker (Ann. Bot. Gard. Cale, V, t. 87, fig. B. 2) in having the calli 
inside the spur smooth, not pubescent, and it may be different from the Khasia one. 
PrarE 314.—Slereochilus bicuspidatus, King and Pantling. A plant, of natural size. Fig. 1 a flower, 
2 ovary, column, anther and lip, side view, 3 longitudinal section of the preceding, 4 front view 
of the apex of the column, showing the anther in situ, the twisted rostellum with the gland of the 
caudicle at one side, 5 the callus on the posterior wall of the spur below the column, 6 transverse 
section of the spur, 7 empty anther seen from below, 8 pollinia, side and back views; ай enlarged. 
