38 BALFOUR—NEW SPECIES OF RHODODENDRON. 
rescent but with traces of juvenile hairs particularly in groove 
of midrib, primary veins about 8 on each side slightly as- 
cending at an acute angle, ultimate veinlets hardly visible ; 
under surface fawn-coloured, midrib raised slightly pink-tinted 
and sparsely floccose, some primary veins slightly raised, rest 
of venation concealed by a dense bistrate indumentum of 
whitish hairs forming a scintillating not crustaceous nor 
agglutinate but somewhat wefted honeycombed surface, hairs 
of upper stratum stalked the stalk pluricellular not long 
ending in a tuft of thin-walled elongated blunt branches, those 
of adjacent hairs interlocking and forming a canopy over 
more shortly-stalked or nearly sessile rosette-hairs with short 
vesicular branches, eglandular; petiole about 5 mm. long 
glabrescent with a few traces of juvenile hairs. - Flowers in 3-4- 
flowered terminal umbels; bracts and bracteoles unknown ; 
pedicel about 1.7 cm. long stout dilated under the calyx, pubes- 
cent with short floccose fasciate hairs, eglandular. Calyx con- 
spicuous as much as 1.3 cm. long; cup short about 1 mm. long 
with a few floccose hairs outside, bearing 5 yellow membranous 
lobes deflexing and then deciduous ; lobes unequal largest about 
1.2 cm. long and 6 mm. broad ovate acuminate or tailed 
glabrous inside, outside sparingly floccose, ciliate, small lobes 
often 2 or 3 mm. long and broad. Corolla tubular-campanulate 
rose with darker margin yellowish towards base about 3.7 cm. 
long ; tube fleshy imperfectly septate by 5 interpetaline folds 
5-gibbous retuse at the base glabrous outside and inside, 
5-lobed ; lobes rounded about 1.3 cm. long and 1.6 cm. broad 
emarginate crenulate. Stamens 10 unequal much shorter than 
corolla, longest about 2.3 cm. long with dark purple anther 
about 3 mm. long, shortest about 1.2 cm. long with anther 2 mm. 
long ; filaments pale-coloured slightly widened to base glabrous. 
Disk glabrous. Gynaeceum about 3 cm. long shorter than 
corolla longer than stamens ; ovary ovoid truncate about 4 mm. 
long grooved eglandular densely tomentose with an indumentum 
essed greasy rufescent floccose hairs ; style stout glabrous 
clavate under the lobulate lipped broad stigma. 
W.N.-W.-Yunnan. Mekong-Salween divide. Lat. 28° 12’ N. 
Alt. 11,000 ft. On open rocky slopes. Shrub of 4 ft. Flowers 
rose, darkest round margins, yellowish towards base. G. Forrest. 
No. 14,269. July 1917. 
Another delightful species allied to Rh. sanguineum, Franch. 
It finds its closest affinity in Rh. citriniflorum, Balf. f. et 
Forrest, and recalls in many features that species, having the 
persistent outer scale-leaves of the bud clothing the nodular 
stem more or less. It is easily distinguished by its under-leaf 
Jadumentum, which is much thinner, forms a more- compact | 
