200 
CXXXVI. ORCHIDEiE. 
[Thelasis. 
node globose, upper cylindric, i in. long. Leaves 2, lower one small, 
upper 4 to 6 in. long, i in. wide, lanceolate or oblong pedoled. 
Scape 6 to io in. long. Flowers green. Bracts lanceolate cuspidate. 
Sepals oblong blunt, not keeled. Petals smaller. Lip lanceolate 
sub-acute. Hab. Mountains. Selangor, Gunong Mengkuang 
Lebah (Robinson). Perak, Thaiping Hills; Bujong Malacca 
(Ridley). 
(4) T. carinata Bl. Bijdr. 386; Orch. Arch. Ind. 25, pi. 7, fig. 3. 
T. elata Hook fil. F.B.I. vi. 87. Oxyanthera elata Hook. fil. 
Ic. PL 2156; Ridl. Mat. i. 200. 
Pseudobulb none. Sheathing base of leaves 2 in. long, blade 
12' to 13 in. long, 1 in. wide, lorate blunt. Scape 12 to 18 in. long, 
racemose part 2 to 4 in. long. Flowers very numerous. Bracts 
lanceolate. Sepals lanceolate connivent acute. Petals smaller, 
all green tipped white. Lip with short erect side-lobes, midlobe 
oblanceolate mucronate white. Column short. Rostellum much 
longer bifid. Pollinia 6, semi-globose on a slender pedicel. Capsule 
•12 in. long, fusiform, terminated by the withered perianth. Hab. 
Common on mangroves and other trees. Singapore, Sungei Buluh; 
Kranji. Pahang, Pekan; Kota Glanggi. Selangor, Batu Caves 
(Ridley). Perak, Goping (Kunstler). Hermitage Hill (Curtis). 
Kedah Peak (Robinson). Penang Hill (Maingay). Distrib. Borneo, 
Sumatra, Java. 
(5) T. decurva Hook. fil. F.B.I. vi. 87. Oxyanthera decurva 
Hook. fil. Ic. PI. 2157. O. micrantha Ridl. Mat. i. 200. 
Leaves 4 or 5 lanceolate blunt or sub-acute ; sheaths 1 to 1-5 in. 
long, blade 6 in. long, *5 in. wide. Scape very slender, 5 in. long, 
raceme *5 in. long, decurved. Flowers -12 in. long, fawn-colour. 
Bracts ovate blunt. Sepals and petals lanceolate blunt. Lip 
lanceolate acute. Pollinia 8. Rostellum very long bifid. Capsule 
fusiform, -12 in. long. Hab. On mangroves and trees on river 
banks, Singapore, Kranji. Pahang, Tahan River. Penang Hill. 
Distrib. Malay Isles. 
Tribe III. NEOTTIEjE (Genera 79-104) 
79. VANILLA, Sw. 
Fleshy climbers with ovate leaves or leafless. Racemes short 
stout axillary. Flowers usually large. Sepals and petals sub-equal 
spreading. Lip large 3-lobed or entire, flat or convolute. Column 
long, anther broad ; pollinia granular. Rostellum entire or nearly 
so. Fruit long fleshy terete. Seeds minute globose. 
Species about 20, all tropical countries. 
Leaves large ovate-lanceolate. 
Lip explanate 3-lobed short . . . . . (1) V. Griffithii 
Lip convolute entire long.(2) V. montana 
Leafless; flowers rather small, lip pink . . (3) V. aphylla 
