180 



J). ONIFLORUM, iTiijf'. Notiihc, iii. 805. 



Guuoui,' Tahan. 5,000-6,000 ft. (5497.) At 3,300 ft. (5842, 

 5306.) On trees : creamv wliite, lip tinted with green and three 

 brown liue^ down the centre. 



In No. 5306 the leaves are over 2 inches long and half an inch wide, 

 of thinner texture than those of the other two specimens. The 

 leaves of No. 5497 are those of tlie Mount Ophir form, short, thick 

 and oblong. 



The Dendrobiums of the section Disfichnjjhylh-v, of the D. unijlorain 

 and I), revolutinn series, require critical study both in the Malay 

 Peninsula and in Borneo, whei'e they are also abundant on the 

 upper parts of the hill-rauges. 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, LituU., Gen. & Sp., Orch. 81 (p. 324). 



Cxunong Tahan, 5,000-5.500 ft. Lij) creamy white with orange 

 blotches ; petals and sepals pale cottee-brown, much darker at 

 the base. (5505.) 



I cannot distinguish this from the well-known lowland plant, on 

 which Lindley based his species, thoiigh Mr. Kobinson'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 occurs 

 l)oth in the lowlands and the hill-region of the Malay Peninsula 

 and Borneo. 



D. (§ Pedilouum) cornutum, Uook.JiL, Fl. Brit. hid. v. 730. 



Guuong Tahan, 5,000 ft. ; on trees. Flowers bright magenta, stalks 



and bracts the same colour; a yellow spot on the lip. (5431.) 

 Dietrib. — Perak. 



This species is closely allied both to D. Kuhlil, Lindl., and D. Has- 

 seltii, Lindl., of Java and Sumatra. It differs but little from the 

 latter, chiefly in the naiTower acute sepals. 



D. (§ Pedilonum) subflavidum, n. sp. 



Caules plures gi-aciles teretes, 18 poll, lougi, \ poll, crassi, internodiis 

 bipollicaribus. Folia anguste lanceolata acuminata acuta, 3 poll, 

 longa \ poll, lata, conspicue 5-nei*\'ia, apicibus insequalibus. 

 Pedunculi e caulibus defoliatis | poll, longi biflori. Bractese 

 ovatae. Pedicelli cum ovariis gi'acilibus f poll, longi. Flos 1^ 

 poll, longus ab apice sepal i usque ad apieem menti. Sepalum 

 posticum lanceolatum | poll, longum ; sepala lateralia subtriangu- 

 laria multo latiora, mcntum cornutum 1 poll, longum, apice curvo. 

 Labellum lanceolatum, ungue longo et anguste, limbo integro ob- 

 tuso, 1 poll, longum J poll, latum. Columuae parte libera brevi 

 lata, alis alte elevatis. 



Gunong Tahan, 3,300 ft. Flowers yellow. (5317.) At roots of 

 trees; flowers pale greenish-yellow, lip yellow, spotted with crimson 



