148 BALFOUR—NEW SPECIES OF RHODODENDRON. 
cm. long ; lamina thinly leathery oblong-oval or oboval as much 
as 7 cm. long 2.5 cm. broad, apex obtuse or rounded with a short 
projecting red tuberculate mucro, margin cartilaginous plane 
or slightly recurved sometimes roughened and with an occasional 
bristle towards base, base obtuse; upper surface mat olive- 
green smooth glabrous save grooved midrib which may have 
some floccose hairs at base and some red bristles, primary veins 
some 7 or 8 on each side concealed ; under surface grey green 
marked by the red veinlets of the ultimate venation, glabrous 
or with some whitish or reddish floccose hairs on elevated often 
red midrib and hardly raised primary veins sometimes also a 
few red bristles on midrib and veins particularly at the base ; 
petiole reddened about 5 mm. long grooved bearing red bristles 
often densely covered by them. Flowers in a terminal 4~—5- 
flowered umbel; bracts and bracteoles falling as the flowers 
open ; pedicels red about 1 cm. long rarely longer densely floccose 
with long stalked flocks with erect branches eglandular, swollen 
at the top. Calyx bright red conspicuous with a darker crimson 
cup, about 3 cm. long divided to base or near it into 5 rounded 
somewhat unequal slightly fleshy lobes broader than long about 
equal to cup in length glabrous outside floccose-ciliate persistent. 
Corolla deep crimson without spots slightly more darkly blotched 
at base posteriorly campanulate about 3.5 cm. long somewhat - 
fleshy at base and 5-gibbous with faint interpetaline ridges in- 
side, glabrous outside and inside; lobes large rounded about 
1.5 cm. long 2 cm. broad emarginate. Stamens to slightly 
unequal longest about 2.2 cm. long shortest about 1.8 cm. 
long shorter than corolla and gynaeceum ; filaments slightly 
dilated downwards glabrous ; anthers about 2 mm. long. Disk 
glabrous. Gynaeceum not 2.5 cm. long shorter than corolla 
slightly longer than stamens ; ovary stout dome-shaped deeply 
grooved truncate about 4 mm. long tomentose with long stalked 
freely branched fasciate floccose hairs eglandular ; style glabrous 
stout dilated below the lobulate stigma. Capsule a little over 
1 cm. long cylindric bristly or warted by scars of bristles, through 
more than half its length enclosed in accrescent brown leathery 
calyx, dehiscing to base from apex by 5 woody valves. 
.E. Tibet. Tsarong. On Doker-la. Mekong-Salween 
divide. Lat. 28° 25’ N. Alt. 13,000-14,000 ft. On open 
bouldery slopes. Shrub of 2~3 ft. Flowers deep crimson. 
G. Forrest.. No. 16,702. June 1918. 
Rh. pothinum in dried specimens gives all the promise of a 
bright garden plant deserving the name that is attached to it. 
The species is a near ally of Rh. eudoxum, Balf. f. et Forrest, 
and comes from the same region of S.E. Tibet. The similarity 
in general appearance of the plants in dried specimens is so great 
