324 MR. H. N. RIDLEY ON A COLLECTION OF 
the hill-ranges. There is considerable variation in the form and texture 
of the leaf and also in the height and habit of the plant, though the 
flowers seem to be much less variable. 
DENDROBIUM BIFARIUM, Lindl. Gen. y Sp. Orch. 81. 
Gunong Tahan, 5000-5500 ft. Lip creamy white with orange blotches ; 
petals and sepals. pale coffee-brown, much darker at the base. (5505.) 
I cannot distinguish this from the well-known lowland plant, on which 
Lindley based his species, though Mr. Robinson’s note as to the colour 
of the flower (which is usually creamy with a green lip) shows some 
variation from the normal. The species oceurs both in the lowlands and 
the hill-region of the Malay Peninsula and Borneo. 
D. ($ Pedilonum) сокхотом, Hook. fl. Fl. Brit. Ind. v. 130. 
Gunong Tahan, 5000 ft. ; on trees. Flowers bright magenta, stalks and 
bracts the same colour ; a yellow spot on the lip. (5431.) 
Distrib. Perak. 
This species is closely allied both to D. AwAlit, Lindl., and D. Hasseltii, 
Lindl. of Java and Sumatra. It differs but little from the latter, chiefly 
in the narrower acute sepals. 
D. ($ Pedilonum) sUBFLAVIDUM, n. sp. 
Canles plures graciles teretes, 18 poll. longi, $ poll. crassi, internodiis 
hipollicaribus. Folia anguste lanceolata acuminata acuta, 3 poll. longa 
| poll lata, conspicue 5-пегуіа, apicibus ineequalibus. Pedunculi e 
caulibus defoliatis 5 poll. longi biflori. Bracteze ovatæ. Pedicelli cum 
ovariis gracilibus 2 poll. longi. Flos 1j poll. longus ab apice sepali 
usque ad apicem menti. Sepalum postieum lanceolatum 4 poll. longum ; 
sepala lateralia subtriangularia multo latiora, mentum cornutum 1 poll. 
longum, apice curvo. Labellum lanceolatum, ungue longo et anguste, 
limbo integro obtuso, 1 poll. longum 7 poll. latum. Columnæ parte 
libera brevi lata, alis alte elevatis. 
Gunong Tahan, 3300 ft. Flowers yellow. (5317.) At roots of trees ; 
flowers pale greenish-yellow, lip yellow, spotted with erimson near the 
base on either side ; leaves tinged with dull erimson on the under face. 
(5300.) 
Evidently allied to J. megaceras, Hook. fil., a little known plant collected 
by Maingay in Malacca and not since found. It differs chiefly in the 
lip being quite entire and the limb lanceolate. J). Anthrene, Ridl., of 
Borneo is also allied. 
BULBOPHYLLUM GALBINUM, Lidl, in Journ. Linn. Soc., Bot. xxxii. (1896) 267. 
Gunong Tahan, 3300 ft. ; on trees. (5305.) 
Distrib. Perak. 
