Id t yt 
“OY 
86 BALFOUR—NEW SPECIES OF RHODODENDRON. 
N.W. Yunnan. On the Li-ti-ping. In open thickets. 
Alt. 11,000 ft. Lat. 27° 12’ N. Shrub of 6-10 ft. Flowers 
deep rose with crimson markings. G. Forrest. No. 13,881. 
June Ig17. 
N.W. Yunnan. Mekong-Yangtze divide. Lat. 27° 40’ N. 
Alt. I0,000-11,000 ft. In open thickets. Shrub of 10~20 ft. 
In fruit. G. Forrest. No. 12,845. Jul 14. 
Akin to Rh. ovatum, Planch., which as described seems to 
be an aggregate of more or less distinct forms, and requires 
analysis through an adequate number of specimens from 
different places in the wide area over which it is said to be 
spread—an area extending from Hong Kong on the south, 
Fukien, Kwangsi, and Chekiang on the south-east, to Western 
Hupeh on the west. Forrest has specimens of a plant from the 
Shweli-Salween divide (Nos. g901, 11,850) and one from the 
western flank of the same divide (No. 9341), and also from 
mountains south of Tengyueh (No. 11,863), which are of the 
Ovatum series but are not Rh. ovatum, and which show differ- 
ences from Rh. leptothriwm. Their position has yet to be de- 
termined. Rh. australe, Balf. i. et Forrest,* a species from the 
neighbourhood of Tengyueh, is a near ally of Rh. leptothrium, 
but it has oblong or oblong-lanceolate tapered leaves not 
truncate or emarginate, of a pale grey-green colour on the lower 
surface, with a different reticulation of the venation, larger 
flowers, the calyx with broader lobes, gland-fringed not hair- 
ciliate, less fleshy corolla, stamens longer not glandular. 
The hook-like simple hairs forming the puberulous covering 
of all the vegetative parts in Rh. ovatum and its allies seems to 
be an important diagnostic character of indumentum. With 
this is associated an upper stratum in most parts of setulose 
many-celled hairs ending in red ovoid glands which are no less 
characteristic, 
Rhododendron leucopetalum,; Balf. f. et Forrest.t 
Dwarf shrub as much as 1 m. high with thin straight 
short branches about 2 mm. in diameter when a year old and 
* Description of this species will appear in a following number of these 
** Notes.” 
t 4evxds, white=in allusion to the colour of the petals, 
$ Rhododendron leucopetalum, Balf. f. et Forrest. Frutex nanus ad 1 m 
Rami tenues stricti subvirgati glabrescentes folia 4-5 ad a rosulatim 
eitentes, perulis persistentibus haud vestiti, nodulosi. Folia ad 6. 5 cm. longa; 
lamina coriacea obovata ad 5.5 cm. longa 3 cm. Iata _“apice rotundata 
rato induta; petiolus ad 1 cm. longus 
tenui persistente | 
sabres Umbela terminalis 4-6-ora pedicelli ad 2.5 em. longi pilis 
