378 MR. HENRY RIDLEY ON ORCHIDEZ AND 
occurrence in any other orchid. The flowers open at intervals 
of about five days, and last about half a day in perfection. 
Blume’s Dendrocolla ampleaicaulis, Bijdr., p. 288, is referred 
by Reichenbach to this species; but his description, such as it 
is, does not agree very well. He says “‘ sepalis oblongis acutis, 
labello interne muricato.” 
THRIXSPERMUM CaLcEoLus, Reichb. f., Xenia Orch., li. p. 122. 
Sarcochilus Calceolus, Lindl., Bot. Reg. (1846) t. 19. 
S. brachystachys, Hook. f., Fl. Brit. Ind., vi. p. 41. 
Hab. Singapore: Sungei Morai! Pulau Ubin! Pulau 
Tekong Vesar! Kranji! 
Johore: Tanah Runto! Kwala Batu Pahat, Kelsall ! 
Pahang: Pekan, Kwala Tenok, Tahan River! 
Dindings: Telok Sera, Curtis ! 
Penang: Penang Hill, Maingay (in herb. Kew) ! 
This is a very common plant which, perhaps from the 
fugacious character of its flowers, seems to have escaped the 
notice of almost all the botanists in the peninsula. It was first 
described from a cultivated specimen sent by Cuming from the 
‘ Philippines.” 
It grows in masses on the ground, and especially on rocks on 
the banks of rivers or by the sea. The stems attain a length of 
12 feet, and the short racemes are emitted at intervals all along 
them. The flowers here are large and pure white, except for a 
yellow spot round the epichil and a few red or orange dots at 
the entrance to the spur. They are deliciously scented. The 
plant would be well worthy of cultivation but that it seldom 
flowers, and when it does, the flowers last but a few hours. 
The figure of Sarcochilus pauciflorus, Hook. f., in Scortechini’s 
drawing resembles this in mest points, but the description in 
‘Fl. Brit. Ind’ seems to be that of a distinct species. 
T. pauctFLorum, Ridl. Sarcochilus pauciflorus, Hook. f., FI. 
Brit. Ind., vi. p- 41, was collected by Scortechini in the Thaiping 
Hills, Perak. 
T. Scopa, Reichb. f., ea Hook f., Fl. Brit. Ind., vi. p. 40. 
Hab. Perak: Larut (King’s Collector). 
T. Scorrecninu, Ridl. Sarcochilus Scortechini, Hook. f., FI. 
Brit. Ind., vi. p. 40. 
Hab. Perak: Scortechini. 
ry 
