3l^t)ot)otietitiron ^octetp ^ote£( 
corolla and always curved upwards at the top, is glabrous but in species which 
have a glandular ovary the glands may extend for a short distance up the lower 
part of the style. The stigma is a broad, flat or concave disc distinctly grooved 
on the top into many segments. The capsule always slightly curved shows on 
the outside the remains of the ovarian covering, and dehisces from apex to base 
by valves of unequal breadth, sometimes narrow of one carpel, sometimes broader 
of two or more carpels united together. I have not seen the valves falling away 
entirely from the central septal column. The brownish seeds, some 3 mm. or 
more in length, are flattened and always have a circumferential winged aril as 
well as a more or less developed crest or fringe at both the chalazal and the 
hilar extremities. 
Of plants belonging to the series of which we have knowledge sufficient to 
entitle us to describe them as species, there are 14, and the following is a list 
of them :— 
Name and date of description. 
R. ARiZELUM, Balf. f. et 
Forrest (1920)* 
R. BASiLicuM, Balf. f. et .. 
W. W. Sm. (1916) 
R. CORIACEUM, Francli. (1898) 
R. DECIPIENS, Lacaita (1916) 
R. EXIMIUM, Nutt. (1853) .. 
R. Falconer:, Hook. f. (1849) 
R. FICTOLACTEUM, Balf. f. . 
(1916) 
R. GALACTINUM, Balf. f. 
R. Hodgson:, Hook. f. (1849) 
R. MEGAPHYLLUM, Balf. f. et 
Forrest (1920)* 
Distribution. 
W. Yunnan : Shweli-Salween 
divide, 11-12,000 ft. 
N.E. Upper Burma : Hpimaw 
Pass, 95-10,500 ft. 
W. Yunnan : ShweU-Salween 
divide, 11,000 ft. 
N.W. Yunnan : Mekong- 
Salween divide. 
S.E. Tibet: Doker-la, 
12,000 ft. 
W. Sikkim, 10-11,000 ft. 
Bhutan : Oola Mts., 
10-11,000 ft. 
Bhutan 
Sikkim, 10,000 ft. .. 
N.W. Yunnan, both East 
and West. 
S.W. Szechwan : Mu-h Mts 
12-13,000 ft. 
W. Szechwan 
Bhutan 
Sikkim, 10-12,000 ft. 
W. Yunnan : Shweli-Salween 
divide, 10-11,000 ft. 
Discoverer. 
Forrest (1917) 
Farrer (1919) 
Forrest (1913) 
SouUe (1893) 
Forrest (1917) 
Lacaita (1913) 
Booth (before 
1853) 
Griffith (1837-38) 
Hooker f. (1848) 
Delavay (1886) 
Forrest (1918) 
Wilson (1910) 
Griffith (1837-38) 
Hooker f. (1848) 
Forrest (1918) 
* Description of this species will appear in an early number of Notes from the 
Royal Botanic Garden, Edinburgh. 
207 
