394 MR. HENRY RIDLEY ON ORCHIDEH AND 
subglobosus, superior } poll. longus cylindricus a vagind folii 
inferioris tectus. Folia 2, inferius 1 poll. longum, ; poll. latum, 
lanceolatum, superius 4—6 poll.longum, | poll.latum, lanceolatum 
vel ellipticum obtusum petiolatum. Scapi 6-10 poll. long), 
laterales, erecti vel nutantes, in 4 parte inferiore (vaginis 
paucis acuminatis exceptis) nudi; racemus laxus, multiflorus. 
Flores parvi, sessiles, virides. Bractew } poll. longe, lanceolate 
cuspidate. Sepala oblonga obtusa, ecarinata. Petala sepalis 
minora. Labellum petalis brevius magis carnosum, lanceolatum 
subacutum. Anthera lanceolata, acuta; pollinia 4, parva, 
glabra. Rostellum antheri longius, ovatum acuminatum, 
profunde bifidum. 
Hab. Maxwell’s Hill, on a fallen tree ! ; 
A very distinct plant, with the pseudo-bulbs of T. longifolia, 
Hook f., but with two well-developed but unequal broad leaves, 
and a very different lip. The rostellum is bipartite; as; 
indeed, it is also in T. elongata, Blume, so that this cannot be 
used as a distinguishing character for Oxyanthera. 
OXYANTHERA, Brongn. 
O. vata, Hook. f., Ic. Pl., t. 2156. 
Thelasis elata, Hook. f., Fl. Brit. Ind., vi. p. 87. 
Hab. Singapore: Kranji! Sungei Buloh! Sungei Morai! 
Pahang: Kwala Pahang, Kota Glanggi! 
Perak: Thaiping Hills! 
Penang: Government Hill, Maingay. 
Also Djambi in Sumatra ! and Borneo! 
A common plant, with insignificant greenish and buff 
flowers. 
O. pecurva, Hook. f., Ic. Pl., t. 2157. 
Thelasis decurva, Hook. f., Fl. Brit. Ind., vi. p. 87. ; 
Hab. Singapore: Sungei Morai, Selitar! Kranji! Bukit 
Mandai, Serangoon, &e. ! 
Penang: Maingay. 
Pahang: Tahan River! . 
I have it also from Pulau Condore near Saigon, Rhio, 
Borneo, and Djambi in Sumatra. 
It is common in mangrove swamps, &c. ; 
In the figures of both of these species in the ‘ Icones Plantarum 
