APOSTASIACEE OF THE MALAY PENINSULA. 377 
lorata. Pedunculi sepe longi, porrecti; racemi breves vel 
longi, diu crescentes, complanati; bractew distiche, lateraliter 
compressee, persistentes. Flores majusculi, fugaces, singulatim 
intervallis longis expansi. Sepala petala subsimilia, ovata, 
subobtusa vel caudata. Labellum saccatum; lobi laterales 
falcati, medius sepe carnosus ; callus 1 (vel 2) parvus in disco 
situs. Columna breviuscula. 
Species, sepalis petalisque haud caudatis. 
THRIXSPERMUM LILACINUM, Reichb. f., Xenia Orch., ii. p. 121. 
T. Catceotus, Reichb. f., l.c., p. 122. 
T. pracnystacHys, Fidl. Sarcochilus brachystachys, Hook. f. 
T. paucirLoruM, Fd. Sarcochilus pauciflorus, Hook. f., 
Fl. Brit. Ind., vi. p. 41. 
T. SERR#FORME, Reichb. f., Xenia Orch., ii. p. 121. 
T. Centipepa, Lour., Fl. Cochinch., p. 520. 
T. puRPURASCENS, Reichb. f., Xenia Orch., ii. p. 121. 
T. optusum, Teichb. f., l.c. 
Species sepalis petalisque caudatis. 
T. AracunitEs, Reichb. f., l.c. 
T. Scopa, Reichb. f., ex Hook. f., Fl. Brit. Ind., vi. p. 40. 
T. Scorrecuinul, Ridl. Sarcochilus Scortechini, Hook, f. 
T. purpurascens, Reichb. f., Xenia Orch., ii. p. 121. 
T. uimactnum, Reichb. f., Xenia Orch., ii. p. 121. 
Sarcochilus lilacinus, Griff., Notul., iii. p. 334, et Ic. Pl. As., 
t. 320, fig. 2. 
Hab. Singapore: common; Selitar, Changi, Ang Mo Kio! 
Pahang: Pulau Chengei, Pekan! 
Malacca: Ayer Panas! 
Perak: Thaiping! 
Also Java! 
This plant grows scrambling through long grass and herbagein 
hot open marshes. The stems attain a length often of many feet. 
The flowers are showy, and vary from white to lilac according 
to the amount of exposure to the sun. The peduncle stands 
at right angles to the stem as a rule, and the pedicel of the 
flower stands at right angles to the rhachis. The flower is so 
placed that the apex of the lip points upwards, while the 
sepals, petals, and saccate portion of the lip are horizontal: a 
position which I do not remember to have seen as a normal 
