186 cxxxvi. orchide^e. [Thrixspermum. 
(7) T. crassifolium Ridl. Journ. Roy. As. Soc. S. By. 41, p. 32 ; 
Mat. i. 183. 
Stem 6 in. tall, stout. Leaves crowded thick leathery oblong 
blunt, 4 in. long, 1*25 in. thick. Scapes 3 to 5 in. long, base purple; 
racemes 1*5 to 4 in. long. Bracts -25 in. long, close set. Sepals 
linear caudate, base broader, -75 in. long, bright yellow. Petals 
narrower linear caudate. Lip -25 in. long, pubescent orange tipped 
cherry scarlet, spur saccate, side-lobes arched blunt, midlobe 
fleshy blunt ovate, callus tongue-shaped. Fruit angled linear, 
•3 in. long. Hob. On old coffee trees, rare. Johor, Castlewood 
(Ridley). 
(8) T. iodochilus Ridl. 
Habit of T. arachnites ; stem about 4 in. long, covered with 
strongly ribbed sheaths. Leaves oblong-linear, 3 to 5 in. long, 
*5 in. wide. Racemes flat, 1 in. long or more on peduncles 1*5 in. 
long. Bracts boat-shaped as in T. arachnites. Flowers on pedicels 
•3 in. long. Sepals and petals triangular-lanceolate long caudate, 
tails filiform, very slender, 75 in. long, ochre yellow, spur pink 
short blunt, -12 in. long. Lip -25 in. long, linear narrow violet. 
Hab. Trees at 1000 ft. altitude. Negri Sembilan, Bukit Tangga 
Pass (Ridley). 
(9) T. leucarachne Ridl. Journ. Linn. Soc. xxxii. 379. 
Stem 4 to 5 in. long. Leaves broadly linear-lorate blunt, 6 in. 
long, -5 in. wide. Peduncles 6 in. long; racemes rather short ; 
bracts acute. Sepals and petals linear-acuminate caudate filiform 
white. Lip saccate at base, side-lobes elongate, falcate acute, 
midlobe lanceolate acute, white, base crimson, lobes and disc inside 
violet spotted pubescent; callus small papilliform violet. Hab. 
Lankawi (Curtis). Distrib. South Siam. 
(10) T. notabile Ridl. Journ. Linn. Soc. xxxii. 379; Mat. i. 
183. Sarcochilus (Ridleya) notabilis Hook. fil. F.B.l. vi. 42; Ic. 
PI. 2126. 
Stem 2 in. long. Leaves broad lorate oblong, green or purple, 
3 in. long, *5 to 1 in. wide. Scapes very slender, 3 in. long, purple, 
raceme 1 in. long. Bracts acute ovate purple. Flowers 75 to 
1 in. wide. Sepals linear very narrow acuminate caudate. Petals 
similar, all yellow or reddish. Lip saccate ovate cuspidate, side- 
lobes not distinct, yellow with pink spots. Column foot adnate to 
lip, not distinct. Hab. Not common. Singapore, Chan Chu Kang; 
Bukit Mandai. Johor, Batu Pahat (Ridley). Perak, Teluk Anson 
(Williams). 
73 . DENDROCOLLA, Bl. 
Small epiphytes; stems short. Leaves lorate or terete. Scapes 
erect; peduncle long; rachis thickened or not flattened. Bracts 
persistent not distichous. Flowers very fugacious small. Sepals 
and petals spreading. Lip broad convolute pubescent inside, 
