286 BALFOUR—NEW SPECIES OF RHODODENDRON. 
green more or less membranous. Corolla oblique tube relatively 
long curved fleshy villous at throat and do 1s, lobes repand, 
yellow, pink or white. Stamens glabrous or puberulous. Ovary 
and style very short, about same length. 
To the series as I know it belong the following species :— 
Rh. anthopogon, D. Don. Nepal, S.W. Sikkim. 
Rh. hypenanthum, Balf. f. N.W. Himalaya. 
Rh. haemonium, Balf. f. et Bhutan, perhaps also N. and 
Cooper. E. Sikkim. 13,000 ft. 
Rh. rufescens, Franch. Yunnan. 
That there are others yet to be recognised I have no doubt. 
KEY TO THE SPECIES. 
1. Perulae persistent. Corolla yellow . . . hypenanthum. 
Perulae deciduous. : . ‘ Z 2 
2. Corolla yellow .  haemonium. 
Corolla rose to white . 3 
3. Calyx lobes obovate-oblong jase. Filainents piaisrdiis 
anthopogon. 
Calyx lobes narrowly oblong glabrous. Filaments puberulous 
rufescens. 
In cultivation are Rh. anthopogon and Rh. hypenanthum— 
perhaps also Rh. haemonium. 
Rh. anthopogon was described and named in 1821 by D. Don 
from Wallich’s Gossain Than specimens.* The description is 
good as a diagnosis of the species from other forms known at 
the date of writing, but in the present time of so much more 
knowledge of Rhododendrons from the Himalayas, Northern 
* D. Don in Mem. Wern. Soc. iii (1821), 409. The paper in which the descrip- 
tion ig thats was read before the Society on 18th Nov. 1820. Don’s description 
Rho dodendron Pree de di ramulis dense pubigeris ; foliis ovalibus subtus 
dense tomentosis ; oribus capitatis ; corolla subhypocrateriformi fauci barbato 
Baltes in Alpe immensa nivosa, Gossaignsthan Nepaliensium dicta. D. 
Frutex A pedalis fasciculatim rerregense Re Tamis fastigiatis ; cortex 
tructi 
datae 
formis roseo-purpurea, tubo cylindrico, laciniis rotundatis ne gg ae: 
fauce villo tortuoso candido barbato; genitalibus tubo inclusis; filam 
plana glabra; stylus superne crassior staminibus duplo athe stigma 
depressum. 
cape dauricum, ab supera primo discriminatur foliis tenuioribus 
deciduis nudis utrinque punctis resinosis crebre i ctis; floribus paucis 
lateralibus, corollis subrotatis tubo vix ullo fauce nudo; genitalibus longe ex- 
sertis ; stigmate capitato. 
