THE FLORA OF THE MALAY· PENINSULA

168 CXXXVI. o RCHIDE...E. [Saccolabium.
ridge on each side of mouth, a thin crescent-shaped callus at back.
Anther hemispheric, beak upcurved. Hab. Perak, Lenggong and
Slim (Ridley, Hobson).
(II) S. uteriferum Ridl. Mat. i. 167. Cleisostoma uteriferum
Hook. fil. F.B.I. vi. 74; Ann. Bot. Card. Calc. v. 56, pl. 84.
Stemless. Leaves lorate round or retuse, edges undulate, 7 in.
long, I in. wide. Scape shorter, 3 in. long, unbranched spicate.
Sepals obovate-oblong dull yellow, base red. Petals smaller. Lip
side-lobes truncate, midlobe very small ovate; spur a large subglobose
sac contracted above, callus semicircular convex. Hab.
Pahang, Kota Tongkat (Evans). Negri Sembilan, Seremban reservoir
(Williams). Perak (Kunstler), a drawing.
(12) S. sylvestre Ridl. Journ. Roy. As. Soc. S. Br. 57, p. 98.
Stem weak, 3 to 8 in. long. Leaves linear-oblong acute, base
slightly narrowed flaccid, 3 or 4 in. long, ·5 in. wide; sheath ribbed
keeled, ·25 to ·5 in. long. Racemes 4 to 6 in. long, slender angled.
Flowers nearly ·25 in. long, numerous distant. Upper sepal ovate
cymbiform, laterals ovate-orbicular slightly falcate. Petals narrower
oblong blunt. All yellow with red streaks. Lip side-lobes
oblong truncate, midlobe linear acuminate; spur longer than
pedicel cylindric dilate in middle, tip broad saccate, calli none.
Hab. Perak, Temengoh, on tree-trunks (Ridley).
(13) S.rugosulum Rldl. Journ. Roy. As. Soc. S. Br. 39, p. 82;
Mat. i. 165.
Stem stout tall. Leaves linear narrowed at base, bilobed at tip.
5 in. long, ·5 in. wide; sheath ·5 in. long, transversely wrinkled.
Racemes short, ·5 in. long, a few cup-shaped sheaths at base.
Flowers ·25 in. wide, yellow spotted red; pedicel·12 in. long. Sepals
ovate coriaceous. Petals thinner. Lip boat-shaped, side-lobes
very short oblong, midlobe large fleshy ovate grooved ending in a
slender horn, bifid at tip; spur short conic blunt. Column large.
Hab. Very rare. Kedah Peak (Ridley).
(14) S. halophilum Ridl. Journ. Lmn. Soc. xxxii. 367; Mat. i.
162. Stems 3 to 12 in. long, curved. Leaves terete pungent recurved
sheaths ·24 in. long. Raceme slender. Sepals oblong blunt.
Petals smaller olive tinted pink. Lip side-lobes ovate, blunt rosy
violet, midlobe hastate blunt, spur horizontal not septate; callus
obtriangular white. Anther ovate beaked. Pollinia globose,
caudicle linear, disc broad hastate. Capsule .36 in. long. Hab.
On trees by the sea, common. Singapore, Pulau Tekong; Sungei
Morai. Johor, Tana Runto. Negri Sembilan, Port Dickson and
Siliau (Williams). Dlstnb. Sumatra, Rhio, Borneo.
(15) S. Machadonis Rldl. Journ. Roy. As. Soc. S. Br. 39, p. 82;
Mat. i. 163.
Stems I ft. long. Leaves terete recurved, 3 in. long, pungent.