270 MR. H. N. BIDLEY—AN ENUMERATION OF 
This is common on dry spots at about 2000 feet on Mt. Ophir, 
and occurs too in the low country in Singapore. I imagine 
Dendrobium attenuatum, Lindl. in Journ. Linn. Soc. (Bot.) ii. 
(1859) p. 17, is intended for this species. It was based ona 
plant collected in Borneo by Lobb, and no. 482 of his collection 
is certainly this. I suspect also D. Lobbii, Teysm. and Binn., 
“ Singapore, Lobb,” is the same. 
DENDROBIUM CRUMENATUM, Sw. in Schrad. Journ. ii. (1799) 
p. 237. Sarawak (Hose!). 
D. ($ VIRGATÆ) SETIFOLIUM, sp. nov. 
Caules congesti, penduli, pedales gracillimi, internodio unico 
ad basin incrassato fusiformi, pollicem longo, 3 poll. crasso, 
olivaceo (sicco corrugato flavo). Folia setacea canaliculata, 
3 pollices longa, acuta, remota. Racemus brevissimus, š poll. 
longus, bracteis siccis bruneis tectus (ut in sectione Aporo) 
lateralis. Flores singulatim expansi, parvuli. Pedicellus 3 poll. 
longus. Sepala lanceolata, ferme 1-pollicaria, lateralia paullo 
latiora subaeuta. Petala linearia erecta, omnia alba. Mentum 
sepalo zequale, curvum obtusum. Labellum ¢rilobum, lobi laterales 
majusculi rotundati, albi intus venis rubris ornati; lobus medius 
ovatus, unguiculatus, albus; fascia in disco inter lobos laterales 
elevata, apice rotundata denticulata flava, supra basin lobi medii 
projecta. Columna recta angusta, stelidiis dentiformibus erectis 
antheram superantibus, ventre excavato canaliculo, basi latiore, 
superne attenuato. Anthera depressa, obtusa. Stigma ellipti- 
cum. Rostellum retusum. 
Sarawak (Haviland!). Rhio (native collector. | V. v. !). 
This has long been in cultivation in Singapore. 
It is evidently allied to D. aciculare, Lindl. The stems are 
very slender, except towards the base where there is a dilated 
fusiform internode. The leaves very thin and slender, terete, 
except for the groove above. The flowers appear one at a time 
from a tuft of dry brown bracts about halfway up the stem. 
They are thin textured and rather fugacious; white, except for 
the pink and yellow marks on the lip ; the lateral lobes are blunt 
and rounded, broadest at the apex, the mid-lobe ovate. A raised 
bar runs down the middle of the dise between the lateral lobes 
and ends in a rounded obtuse callus, which is very finely notched ; 
it projects over the base of the middle lobe, so that the latter 
appears to rise from beneath it. The column has a kind of 
channel rising from the base and narrowing upwards. 
