28 BALFOUR—NEW SPECIES OF RHODODENDRON. 
base through the thick tomentum, tomentum persistent biform, 
of long hairs with a rhachis two or three cells thick branching 
freely—the branches vesicular thin-walled curling and interweav- 
ing—mixed with hairs likewise curling but without the strong 
shaft of the long hairs ; petiole stout about I cm. long 3.5 mm. 
in diameter grooved above, completely enwrapped in the thick 
ferruginous indumentum. Flowers in a terminal about 12- 
flowered umbel ; bracts persistent more or less during flowering 
shaped like the scale-leaves of foliage-bud only larger, inner ones 
densely silkily tomentose on both sides ; bracteoles filiform as 
long as or longer than pedicels pilose from the base ¢ pedicels 
at most 1.4 cm. long more or less floccose but glabrescent often 
showing only a few hairs, eglandular. Calyx with a dark red 
fleshy cup bearing 5 unequal lobes; posterior lobes lanceolate 
acuminate about 5 mm. long, antero-lateral deltoid short about 1.5 
mm. long, all glabrous but with red floccose cilia on the margins. 
Corolla campanulate thin markedly oblique white with many 
crimson spots over the posterior side about 4 cm. long slightly 
5-gibbous glabrous inside and outside with faint imperfect basal 
interpetaline septa inside, 5-lobed (sometimes 6-lobed) ; lobes 
rounded emarginate crenulate posterior largest about 1.2 cm. 
long and 1.8 cm. broad, other lobes narrower. Stamens I0 un- 
equal shorter than corolla, longest about 1.9 cm. long with brown 
anther about 2 mm. long, shortest about 1.5 cm. long with anther 
about 1.5 mm. long; filaments widened downwards, at the very 
base naked or almost so over about I mm. then pubescent with 
longish hairs upwards to middle, or beyond it in shorter stamens. 
Disk green finely puberulous below ovary. Gynaeceum about 
2 cm. long about equal to or only slightly exceeding the longest 
stamens; ovary about 3 mm. long conoid truncate grooved 
completely covered by a pinkish tomentose indumentum of . 
stiff single or fasciately-branched pointed hairs with thick walls, 
eglandular, sometimes becoming bare of hairs towards the top; 
style reddened glabrous hardly widened beneath the medium- 
sized discoid lobulate lipped stigma. 
S.E. Tibet. On Ka-gwr-pw, Mekong-Salween divide. Lat. 
28° 30’ N. Alt. 13,000 ft. On rocky slopes. Shrub of 4-5 ft. 
Flowers white with copious crimson markings. G. Forrest. 
No. 14,718. Aug. 1917. 
This plant looks like one of the Roxieanum series trying to 
become something else. The bright rusty-coloured tomentum 
on the under surface of the narrow oblong recurved leaves 
suggests the Roxieanum series, but the stems are not covered by 
the persistent scale-leaves of the foliage-buds, nor are the leaves 
densely aggregated on short annual growths as is usual in the 
series. The hairs of its indumentum of the under-leaf surface 
