BALFOUR—NEW SPECIES OF RHODODENDRON. 41 
widened downwards, from the base upwards to above the top of 
the ovary puberulous with short stout pointed vesicular hairs. 
Disk minutely puberulous below the ovary. Gynaeceum about 
3 cm. long exceeding the stamens shorter than corolla ; ovary 
about 5 mm. long cylindrico-conoid grooved densely covered 
(except at top) with an indumentum of short-stalked few- 
branched rosette-hairs the branches both long and short of single 
broad vesicular brown cells, summit of ovary often bare of hairs ; 
style pale-coloured glabrous, at top slightly expanded beneath 
the narrower red lobulate lipped stigma. Capsule dark-coloured 
slightly warted straight, oblique to pedicel at base, about 2.2 cm. 
long and 6 mm. in diameter dehiscing from the apex by 5 valves ; 
seeds pale brown oblong about 2—2.5 mm. long and .75 mm. across 
rounded or notched at shortly prolonged chalazal end, fringed 
at prolonged funicular end, aril-wing well developed all round. 
W.N.-W.-Yunnan. Mekong-Salween divide. Lat. 28° 12’ N. 
Alt. 11,000 ft. In open pine forests and on cliffs. Shrub of 
10-15 ft. Flowers pale rose, with a blotch of crimson at base. 
G. Forrest. No. 14,450. July 1917. 
W.N.-W.-Yunnan. On the Bei-ma Shan. Lat. 28° 2a! N: 
Alt. 13,000 ft. In pine forests. Shrub of 10-12 ft. Flowers 
fflished faint rose, with slight marking of crimson at base. 
G. Forrest. No. 14,461. July 1917. 
G. Forrest. No. 14,686. Aug. 1917- se 
S.E. Tibet. On Ka-gwr-pw, Mekong-Salween divide. Lat. 
28° 25’N. Alt. 14,000 ft. In Rhododendron forest. Shrub of 
12-15 ft. Flowers pale rose or washed rose, with crimson blotch 
at base. G. Forrest. No. 14,488. July 1917. 
Rh. colletum is a distinct member of the Lacteum series. Its 
nearest ally is Rh. Beesianum, Diels, a species to which no precise 
limit is really given by the original description, and of which the 
relationship is entirely misconceived in the note to the descrip- 
tion. Rh. Beesianum has no near phyletic relation to Rh. 
Delavayi, Franch., which is one of the Arboreum series. There 
is not even a shade of resemblance between the plants to warrant 
Diels’ suggestion. The reminiscence in Rh. Beesianum of Rh. 
sutchuenense, Franch., which occurred to Diels, had no sound 
phyletic basis, but depended merely on the fact that both species 
have long narrow oblanceolate leaves which on dried twigs show 
a tendency to droop. Rh. sutchuenense finds its phylum in or 
near the Fortunei series. 
The number of described and certain species of the Lacteum 
