CXXXVI. ORCHIDE^E. 
Acriopsis .] 
191 
Leaves 2 or 3 linear blunt, 4*5 in. long, -25 in. wide. Scape 10 to 
13 in. long, base more than half nude. Flowers distant racemose, 
15 to 20. Upper sepal linear, laterals spathulate connate. Petals 
broader, all yellow, spotted red. Lip white, side-lobes oblong, 
midlobe orbicular, base narrow, callus of 2 short keels on the 
claw of the midlobe crimson. Column white spotted crimson, 
arms long clubbed porrect. Hab. Singapore, Bukit Mandai (one 
plant only). Negri Sembilan, Labu Estate (Williams). Kedah 
Peak, at 3000 ft. altitude (Robinson). 
(4) A. purpurea Ridl. Trans. Linn. Soc. ii. 406; Mat. i. 188. 
Pseudobulbs crowded, 75 in. long, oblong. Leaves 2, oblan- 
ceolate, blunt coriaceous, 1*5 in. long, *5 in. wide. Scape 5 in. long. 
Flowers about 13, secund fleshy; pedicel and ovary *5 in. long, 
green and violet. Sepals narrow, laterals connate. Petals spathu¬ 
late blunt, dark purple. Lip violet-rose, edged white, spathulate 
oblong truncate, side-lobes 2 small ears, callus square in centre of 
midlobe, white. Column purple, hood decurved. Capsule oblong, 
•5 in. long. Hab. Rare, Pahang, Pekan (Ridley). Disirib. Borneo. 
75. THECOSTELE, Rchb. 
Epiphytes; pseudobulbs ovoid crowded. Leaf solitary large. 
Raceme pendulous from base of pseudobulb. Flowers numerous, 
small to medium size, pink and white. Sepals spreading, laterals 
oblique. Petals smaller. Lip, base adnate to base of column and 
forming a tube with it, limb clawed with two short or large side- 
lobes and a larger midlobe. Column slender curved with long arms. 
Pollinia 2, caudicles 1 or 2, disc broad. Capsule sub-globose three- 
valved. Species 6, Tenasserim, Malaya, Java. 
Flowers small, numerous on a long raceme. 
Side-lobes very small .... 
Side-lobes large clubbed .... 
Flowers 1 in. or more across, few on short raceme. 
Side-lobes small; midlobe large 
Side-lobes large falcate; midlobe small. 
No extra linear processes at base 
Two linear processes at base 
(1) T. maculosa 
(2) T. Zollinger! 
(3) T. secunda 
(4) T. Maingayi 
(5) T. quinquefida 
(1) T. maculosa Ridl. Trans. Linn . Soc. ii. 374; Mat. i. 189. 
Collabium Wrayi Hook fil. F.B.I. v. 784; Ic. PI. 
Pseudobulbs conic, 4 in. long. Leaf lanceolate-oblong, 1 ft. 
long, 3 in. wide. Scape 12 to 18 in. long. Flowers small numerous. 
Upper sepal oblong sub-acute, laterals broader oblong oblique. 
Petals very narrow lanceolate acuminate falcate; all yellowish 
with chestnut purple spots. Lip side-lobes curved very short, 
midlobe pandurate retuse pubescent, white with dark crimson 
spots. Column slender, arms linear-lorafe. Capsule ovoid, beaked, 
•5 in. long. Hab. Malacca (Goodenough). Sungei Ujong, Burunang 
(Cantley). Pahang, Kwala Tahan. Perak, Thaiping, Waterfall 
