Rhododendron] LXIV. ERICAGE^ 411 



B. Underside of 1. without glandular scales^ calyx deeply lobed or enlarged 

 in fr. 



(a) Brandies not woolly. 



11 E. "barbatum, "Wall. ; Hook. f. Rliod. Sikkhn t. 3. Himalaya, from Kumaon ea&t- 

 wards, 8-12,000 it, Naga lulls 9,000 ft. A binall or middle-sized tree, 1. glabrous, 

 green on. both sideb, acute, petioles, branclilets and midrib beneath with long coarse 

 bribtles. Heads dense, corolla deep red, ovary liairv, capsule | in. long, hirsute. 

 15. R. THomsoni, Hook. f. Rhod. Sikkim t. 12 (HX'amhiabrum, Hook. f. 1. c. t. 29). East 

 Nepal and Sikkim 11-13,000 ft. A large shrub attaining 15 ft., 1. broadly elliptic, 

 obtuse at both ends, base oiten cordate, glaucous beneath, blade 3-4, pet. J-1 in. 

 Calyx cup-shaped unequally lobed, enlarged in fr, partly enclosing the glaucous 

 purple I in. long cajasule. Corolla deep crimson. 16. R. Hookeri, Nutt. Bhutan, 

 similar and possibly only a variety of 15. L. oblong, undei'side with minute liaised 

 reticulate veins. Calyx cup-shaped, unequallv lobed. 17. R. GriffitManum, Wight Ic. 

 t. 1203 (i?. Auckland li, Hook. f. Bhod. Sikk.'t. 11). Sikkim and Bhutan 7-9,000 ft. 

 A shrub, at times a middle-sized tree, 1. glabrous, oblong, base rounded, blade 4-9, pet. 

 1-1^ m. Fl. large white with a pink tinge, cal^^x saucer-shaped, margin nearly entire, 

 in fr. often unequally enlarged. Capsule 10 in. long, very woody, 



(b) Branches woolly. Usually epiphytic. 



18. R. EdgewortMi, Hook. f. Ehod. Sikk. t. 21. Sikkim 7-9,( 100 ft. Bhutan. Branchlets, 

 petioles, undei-side of 1., pedicelb, calyx and capsule, while young, densely clothed with 

 rugity wool. L. mostly scattered, upperside glabrous but stronglv rugose with the 

 deep! J-' impressed nerves and veins. Fl. \\hite, sweet scented, calyx divided nearly 

 to the base, lobes obtuse, somewhat unequal, \ in. long, corolla 2-8 in. across. 19. R. 

 pendTilum, Hook. f. Ehod. Sikk. 1. 13, branches pendulous, 2-4 ft. long, 1. mostl^y approxi- 

 mate at the ends of branches, rusty -woolly beneath, blade 1-2, pet. J in. long. , Calyx- 

 lobes obtuse, J in. long, rose-coloured, corolla white, 1 in. across, glandular 

 outside. 



C. Underside of 1. with round appressed glandular scales. 

 (a) Calyx-lobes short or obsolete, not enlarged in fr. 



20. R. cinnabariEum, Hook. f. Ehod. Sikkim t. 8 ; Gamble Ind. Tinib. ed. ii. 436 (i?. 

 Boijlli, Hook, f . Ehod. Sikkim t. 7) Sikkim 10-12,000 ft. and higher. Bhutan. A large 

 shrub, 1. glabrous and shining above, densely clothed beneath with glandular scales, 

 blade 3-4, pet. J~i in. long, midrib excurrent, sec. n. visible on the upper side. Heads 

 with 5-8 fl., jjedicels J-.^ in. long, calyx-lobes obtuse, usually short, sometimes the 

 upper longer, corolla orange or brick red, long narrow-campanulate, almost tubular, 

 lobes ovate, acute, equal (Hooker's -figure of It. einnaharhmvi x^ossibly rejiresents a 

 different species with dense fl. heads and the uppermost calyx-tooth linear, almost 

 subulate. If so, the species described above should be called R. BoyWi). 21. R. triflorum, 

 Hook. f. Ehod. Sikkim t. 19. Sikkim, Manipur 7-10,000 ft. Attains 8 ft., 1. closely 

 scaly beneath. Fl few, sometimes solitary, corolla yellow, broad-campanulate, 1^- 2 m. 

 across at mouth. 



22. F. Keysii, lN\itt. Bhutan 8-10,000 ft. L. lanceolate, fl. on short axillary spurs, 

 corolla-tube cylindric, pale brick-red. 23. R. vixgatum, Hook. f. Ehod. Sikkim t. 26. 

 Sikkim 7-9,000 ft. Bhutan. A shrub attaining 4 ft. with slender branches and 

 scattered oblong-lanceolate 1. Fl. axillary, solitary or in pairs, pedicels sheathed at 

 the base by imbricate coriaceous deciduous bracts, corolla purple, 1 in. across at mouth. 



24. R. formosum, Wall. PL As. Ear. t. 207. Fanlaung pun^ Kachin. 



A shrub, 1. lanceolatej usually broadest above the middle, acute, glabrous 

 above, glandular scales beneath numerous, hut epidermis distinctly visible 

 between them. Corymbs 2~5-fld., corolla white, widely funnel-shaped, 2 in. 

 across at mouth. 



Bhutan, Khasi hills, often near streams. Kachin hills 7,500 ft. and Euby Mines 

 district, Upper Burma. Hills east of Toungoo 4-7,000 ft. Moolejit 6-6,500. Yunnan 

 4-8,000 ft. Very variable, two varieties may be noted : -K. salielfoHum, Khasi hills, 

 with linear-lanceolate 1. R, Johnsfonianmn, Watt MBS., Naga and Manipur hills, 

 6-9,000 ft., with elliptic L, the glandular scales approximating beneath, corolla with 

 pink streaks and dots. 25. R. Veitcliiaiixmi, Hook. Tenasserim hills 4-7,000 ft. Some- 

 times epiphytic, is supposed to differ by a larger corolla with a crisped crenulate 

 margin. 



