270 MR. HENRY RIDLEY ON ORCHIDE& AND 
BuLBoraynium coriaceum, Ridl. in Trans. Linn. Soc., Ser. I. 
(Bot.) iv. (1894) p. 235. 
B. srRtaTELLUM, Ridl. in Ann. Bot., iv. (1890) p. 335 t. 22, 
fig. 7-9. 
Hab. Singapore: Chan Chu Kang! 
The stelidia in the drawing of the above-mentioned figure 
having been shown a little more slender than they should be 
has led Sir Joseph Hooker to imagine (FI. Brit. Ind., vi. p. 189) 
that there was some confusion in the description and drawing. 
However, both were taken from the then only specimen I had 
seen. It is not very scarce in this locality, but one very rarely 
can get flowers. 
B. catenarium, Ridl. in Trans. Linn. Soc., Ser. U1. (Bot.) iv. 
(1894) p. 235. 
Hab. Singapore: Sungei Buloh! On mangrove trees very 
abundant, Changi! Chan Chu Kang!. 
B. (§ Monanruaparva) Avicenna, Ridl., sp. nova. Rhizoma 
elongatum, gracillimum. Pseudo-bulbi $ poll. longi, pyriformes, 
rugosi, lete virentes, inter se 1 poll. distantes. Foliwm ? poll. 
longum, 3 poll. latum, exacte ovatum, subacutum, crassum, 
coriaceum, carinatum canaliculatum, atroviride. Scapi } poll. 
longi, 1-flori; bracteew minimw, cupuliformes, mucronate. 
Flores parvi, reversi. Sepalum posticum j{ poll. longum, 
lanceolatum acuium virens, lateralia multo latiora conniventia 
cymbeeformia acuta atro-kermesina. Petala minima, cuneata, 
mucronata, pallida. Labellwm brevissime stipitatum ; unguis 
incrassatus, erectus; lamina lanceolata subobtusa, porrecta, 
plana, angusta, aurantiaca subtus purpurea, papillosa; carina 
media, basi kermesina. Colwmna crassa, rosea ; pes curvus, 
subequalis; stelidia elongata, linearia, apice truncata sub- 
biloba, lobo superiore brevissimo, inferiore decurvo-falcato. 
Anthera apice rotundata, margine rostrato; rostellum brevissi- 
mum subtriangulum, obtusum. Stigma ovatum, latum. Capsula 
x poll. longa, pro flore maxima, erecta, ovoidea; carinwe 6, 
acutee, magnee, equales. 
Hab. Singapore: Kranji, Bajan (2361), Toas, on man- 
groves ! 
This little plant is very common in the mangrove swamps, 
but is seldom to be met with in flower. It climbs on the stems 
