376 MR. HENRY RIDLEY ON ORCHIDEX AND 
longi. Flores perparvi, 2-3 simul expansi. Sepalum posticum 
ellipticum, lanceolatum, lateralia multo latiora rhomboidea 
obliqua carinata acuta. Petala lineari - lanceolata, curva. 
Labellum longe unguiculatum, album; lobi laterales magni 
oblongi apice rotundati, medius lingueformis sursum curvus ; 
calcar angustum, longe cylindricum obtusum. Colwmna 
longiuscula; stelidia in parte superiore sita, oblonga sub- 
triangularia, obtusa. Pollinia globosa; caudiculus angus- 
tissimus, apice furcatus. 
Hab. Siam: Bangtaphan, Dr. Keith! On the bole of a tree 
in jungle. v.s. 
This has much the habit of A. hirtulus, Ridl., but differs in 
the very unequal sepals (a rare character in Sarcanthee, the 
very long claw, entire epichil, broad lateral lobes, and very 
long, narrow spur. 
AERIDES, Lour. 
A. oporatum, Lour., Fl. Cochinch., p. 525. 
A. suavissimum, Lindl. in Journ. Hort. Soc., iv. (1849) p. 264. 
A. virens, Lindl., Bot. Reg. (1843) Misc., p. 41. 
Hab. Johore: Pulau Tinggi, Feilding ! 
Selangor: Bukit Hitam, Kelsall ! 
Malacca: Maingay ! 
Lankawi: Curtis! 
Kedah: Pulau Song Song! Yan! 
This usually grows on rocks and trees overhanging the sea. 
It seems especially abundant in the small islands to the south 
of the peninsula. A. suavissimum, Lindl., is the best variety, 
with a longer raceme. It is commoner in the north of the 
peninsula. 
A. MULTIFLORUM, Rozb., Pl. Corom., iii. p. 68, t. 271. 
Hab. Siam: Bangtaphan, Dr. Keith! Tonka (native 
dealers ! ). 
THRIXSPERMOM, Lour. 
Turixspermum, Lour., Fl. Cochinch., p. 519. 
Dendrocolla (§ Cuculla), Blume, Bijdr., p. 287. 
Orsidice, Reichb. f. in Bonplandia, ii. (1854) p. 93. 
Plante terrestres vel rupestres. Caules sepe elongati, 
undique radicantes. Folia amplexicaulia, ovata aut oblonga, 
