BALFOUR—N=W SPECIES OF RHODODENDRON. 73 
tose ; lobes broadly ovate or oblong-obtuse about 2 mm. long 
bright red glabrous outside, floccose-ciliate reflexing and ulti- 
mately falling. Corolla “‘ black-crimson,”’ fleshy tubular-cam- 
panulate about 2.8 cm. (sometimes 4 cm.) long ; tube 5-gibbous 
at base imperfectly septate within, glabrous inside and outside 
expanding into a spreading limb with 5 lobes; lobes rounded 
emarginate and crenulate about 1.2 cm. long and _ broad. 
Stamens ro unequal shorter than corolla, longer about 2.4 cm. 
long with dark brown oblong anther about 3.5 mm. long, 
shorter about 1.3 cm. long with anther about 3 mm. long; fila- 
ments white slightly widened to a darker-coloured base faintly 
puberulous over 2 or 3 mm. from the base. Disk glabrous. 
Gynaeceum about 2.6 cm. long in smaller flowers, a little 
shorter than or about equal to corolla; ovary about 3.5 mm. 
long cylindrico-conoid grooved densely tomentose with indu- 
mentum of stout thick-stemmed floccose fasciate hairs with 
thick-walled cylindric pointed branches, stalks somewhat rufe- 
scent, eglandular; style glabrous throughout expanding into 
the discoid lobulate slightly lipped stigma. 
S.E. Tibet. Mekong-Salween divide, N.W. from Tzeku. 
Lat. 28° 15’ N. Alt. 11,000 ft. Open rocky situations in side 
valleys. G. Forrest. No. 5073. Aug. 1904. 
W.N.-W.-Yunnan. Mekong-Salween divide. Lat. 28° 20’ N. 
Alt. 13,000 ft. Open rocky moorland. Shrub of 2 ft. Flowers 
black crimson. G. Forrest. No. 14,166. July 1917. 
S.E. Tibet. Tsarong. On Ka-gwr-pw, Mekong-Salween 
divide. Lat. 28° 25’ N. Alt. 12,000 ft. In Rhododendron 
scrub on the margins of forests. Shrub of 2-4 ft. Flowers. 
black crimson. G. Forrest. No. 16,736. July 1918. 
Its dark crimson flower—‘ black-crimson ’’ Forrest calls it 
—makes Rh. haemaleum one of the most striking species of 
the many new Rhododendrons obtained by Forrest during 
and, introduced to cultivation, it should 
his explorations, t s 
degree race-development within the 
influence in no ordinary 
genus. 
Forrest first found it in 1904 in the region N.W. of Tzeku, 
and it came to this country as a small fragmentary specimen— 
saved from the collections of that year destroyed by the Lamas, 
—one of several beautiful new plants in like case which we are 
only now getting to know better through Forrest’s present 
explorations. I do not think it can have been found by any 
of the French missionaries who collected in the vicinity of 
Tzeku before Forrest tapped the region. At least It did not 
see any specimens of it at Paris in 1906, and I hesitated to 
name Forrest’s small specimen. Diels, however, named it 
Rh. sanguineum, and under that name it appears in Plantae 
