CLEISOSTOMA. 233 
`9 to 156 in. broad. Panicles rigid, about half as long as the leaves, axillary, stout, 
usually 3-branched; the branches unequal, spikate. Flowers numerous, somewhat crowded, 
"25 in. across; floral bract minute, triangular. Sepals and petals sub-equal, obovate-elliptic 
to sub-orbicular, blunt, concave, spreading; the dorsal sepal arching over the column, and 
the lateral pair embracing the sac of the lip. Lip slightly longer than the sepals and 
petals; the base with a wide short sub-globose spur as long as the ovary, its cavity 
contracted at the mouth by two pointed fleshy calli, the anterior callus larger than the 
posterior (or columnar) one; side lobes narrow, truncate, obscure; apical lobe fleshy, 
reniform. Column stout bearing a semi-circular erose scale; rostellum large, pointed and 
projecting forwards; ро іа two, sub-globose, grooved; the caudicle strap-shaped, slightly 
narrowed at each end, gland V-shaped. Capsule linear-oblong, "85 in. long. Hook. fil. 
Fl. Br. Ind. VI, 74; Hook. fil. in. Ann. Bot. Gard. Cale. V, 57, t. 85. C. callosum, 
Reichb. fil. in Bonplandia (not of Blume). Pomatocalpa spicatum, Kuhl and Hasselt ex 
Reichb. fil. in Dietr. Algem, Gartenzeit, l. c. 
Sikkim, in tropical valleys ascending to elevations of 1,500 feet; in flower during 
May and June; Pantling No. 185. Cachar; Keenan,  Tenasserim; Parish. Andaman 
Islands; Berkeley, Kurz, King's Collectors. 
The ground-colour of the flowers is pale yellow, flushed with pink about the neck 
of the spur. The apical lobe of the lip has two bright red spots. 
PrATE 309.—Cleisostoma Wendlandorum, Reichb. fil. A plant, of natural size. Fig. 1 front view of 
a flower, 2 floral bract, ovary, and flower in profile, 3 column, profile view, and lip with the anther in situ, 
4 longitudinal section of the preceding, 5 empty anther, 6 and 7 views of the pollinia, the latter with the 
caudicle flattened out to show the outline—al/ enlarged; 8 young capsule; of natural size. 
5. CLEISOSTOMA BAMBUSARUM, King and Pantling. 
Stem none or very short. Leaves fleshy, linear-oblong, acute, keeled and channelled, 
slightly narrowed to the base; length 1:5 to 4:5 in., breadth ‘25 to “3 in. Inflorescence 
pendulous, equalling or exceeding the leaves in length; its peduncle with three or four 
sheathing bracts; raceme about 12-flowered, its rachis thicker than the peduncle. Flowers 
“35 to "45 in. across; floral bract lanceolate, more than half as long as the ovary. Sepals 
sub-equal; the dorsal sub-orbicular, very concave; the lateral pair broadly ovate with broad 
bases, sub-acute. Petals obovate-rotund, clawed, shorter than the sepals. Jip with a wide 
spur more than half as long as the ovary, its apex dilated and truncate; the dorsal plate 
or scale thin, its apex resting on the thickened callus on the anterior wall; the mouth with 
short sub-quadrate erect lobes; apical lobe of lip very thick, triangular-ovate, acute, with a 
convexity in the middle. Column short, with a short incurved fleshy arm on each side of 
the rostellum; pollinia two, ellipsoid, compressed; the caudicle dilated and bifid at the apex, 
tapering to the small minute cordate gland. Sarcanthus bambusarum, King and Pantling 
in Journ. As. Soc. Beng., Vol. LXV, Pt. 2, 124. 
Bhotan, at the Rumpti Lake below Nimbong; elevation 1,500 feet; in flower during 
May; Pantling No, 211. 
The dorsal sepal is brown externally, flushed with yellow; internally it is buff- 
coloured; the lateral sepals and petals are buff; the lip is also buff on the upper surface, 
with some brown streaks on the side lobes and a bold patch of yellow on the apical 
lobe. 
Axx. Roy. Bor. Garn., Олісоттл, Vor. VIII. 
