36 BALFOUR—NEW SPECIES OF RHODODENDRON. 
narrow pointed branches, the branches interlocking and covering 
the under stratum of rosulate hairs with broader vesicular 
branches, eglandular—(sometimes the hairs are throughout or in 
part invaded by a fungus with brown-black mycelium to an extent 
so great as to give the whole under-leaf tomentum a black or 
grey-brown colour) ; petiole about 5 mm. long, grooved above 
tomentose at first, glabrescent. Flowers in a 4—6-flowered ter- 
minal true umbel; bracts unknown; bracteoles linear-clavate 
brown about 8 mm. long sparingly and shortly hairy ; pedicels as 
much as 3 cm. long strict ascending expanding below the calyx 
woolly with a bistrate fulvous indumentum, upper stratum of 
long setose hairs ending each in a clavate gland mixed with hairs 
having a long axis and producing many short erect branches, 
under stratum of rosette-hairs. Calyx cupular about 3 mm. 
long; cup outside setulose and floccose like the pedicels ; lobes 
5 rounded ovate or deltoid green or coloured membranous about 
1.5 mm. long equalling the cup glabrous outside margin fringed 
and ciliate with long setulose glands. Corolla bright lemon- 
yellow without blotch or spots about 4 cm. long campanulate 
fleshy below with 5 imperfect interpetaline septa 5-gibbous 
retuse glabrous outside and inside; lobes 5 semi-lunate, about 
1.5 cm. long and 2.6 cm. broad emarginate crenulate. Stamens 
10 unequal shorter than corolla, longest about 2.5 cm. long with 
dark brown anther about 2 mm. long, shortest about 1.8 cm. 
long with anther 1.5 mm. long; filaments pale yellow widened 
to base which is coloured orange, from the base finely puberulous 
to middle of shortest stamens. Disk glabrous dark purple- 
coloured. Gynaeceum about 3 cm. long shorter than corolla 
longer than stamens; ovary about 4 mm. long grooved ovoid 
truncate densely tomentose with an indumentum of floccose 
golden-yellow hairs and many setulose glands; style glabrous 
pale yellow clavate under the flat broad lobulate lipped stigma. 
W.N.-W.-Yunnan. Mekong-Salween divide. Lat. 28° 12’ N. 
Alt. 13,000 ft. On rocks and cliffs. Shrub of 2 ft. Flowers 
soft rose without markings. G. Forrest. No. 14,271. July 
1917. 
W.N.-W.-Yunnan. Mekong-Salween divide. Lat. 28° 12’ N. 
Alt. 13,000 ft. On open rocks and cliff edges. Shrub of 2-3 ft. 
Flowers bright lemon-yellow without markings. G. Forrest. 
No. 14,272. July 1917. 
W.N.-W.-Yunnan. Mekong-Salween divide. Lat. 28° 12'N. 
Alt. 13,000 ft. On ledges of cliffs. Shrub of 3-4 ft. Flowers 
bright lemon-yellow without markings. G. Forrest. No. 14,274. 
July 1917. 
S.E. Tibet. Tsarong. On Ka-gwr-pw, Mekong-Salween 
divide. Lat. 28° 25’ N. Alt. 13,000 ft. On rocky slopes and 
