BALFOUR—NEW SPECIES OF RHODODENDRON. 139 
Species notis sequentibus recognoscenda :—ramulis elepi- 
dotis, foliis parvis, squamis subfoliaribus paucis distantibus, 
costa media supra epilosa, umbellis terminalibus  solitariis, 
corolla extus elepidota, staminibus 10 longioribus exsertis, 
stylo longissimo tenui. 
E.N.E. Yunnan. Back of Io-chow. Alt. 3200 m. Shrub 
about 0.60 m. high with small leaves and pale violet flowers. 
Maire. May. In Herb. Paris, Edin., Léveillé. 
E.N.E. Yunnan. Io-chow. Alt. 3200 m. Rhododendron 
about r m. high with small leaves. Flowers blue. May. 
Maire. In Herb. Edin. No. 63. 
E.N.E. Yunnan. Rocks on Mountains of Se-long-tsin. Alt. 
3200 m. Shrub of 0.70 m. Maire. May. In Herb. Edin. 
No. 33. 
E.N.E. Yunnan. Rocks of the Mountains at Pa-long-tsin. 
0.80 m. Flowers violet. Maire. June. In Herb, Edin. 
No. 34. 
E.N.E. Yunnan. Mountains of Mo-tsou. Alt. 2890 m. 
Shrub. Flowers violet. Maire. April. In Herb. Edin. 
No. 139. 
E.N.E. Yunnan. Rocks of Ma-hong. Alt. 2800 m. Shrub. 
Flowers blue. Maire. May. In Herb. Edin. No. 220. 
E.N.E. Yunnan. Near Niou Ko Tien. Shrub 0,60-1 m. 
Flowers violet. Maire. May rg1r. In Herb. Léveillé. 
This seems to be a widespread species of rhododendron in 
the N.E. of Yunnan, and it shows much variation in form of 
foliage. Specimens with acuminate leaves certainly look very 
different from those with leaves rounded at the apex, but the 
considerable number of specimens I have had for examination 
show all stages of transition. The somewhat isolated brown 
peltate scales on the glaucous green under-leaf surface is 
characteristic, and then the nonfasciculate inflorescence, the 
elepidote corolla, the slender filaments of the stamens and long 
slender style give a combination of characters that I find 
nowhere else. The species I take to be one of the small- 
flowered ones which are more or less allied to Rh. rigidum, 
Franch., some of which have not been described. I am not 
yet in a position to fix precisely its relationships. 
48 Rhododendron rasile, Balf. f. et W. W. Sm. 
Frutex ad 2.5 m. altus. Ramuli annotini glaberrimi crassi 
circ. 7mm. diam. recti purpurei ceraceo-glauci nitentes. Alabas- 
trorum terminalium globosorum circ. 8 mm. diam. perulae 
exteriores atro-purpureae, extimae ovato-acuminatae circ. - mm. 
longae 5 mm. latae dorso rubro-glandulosae vernicosae, interiores 
latiores rotundatae apiculatae et ciliatae. Folia petiolata ad 20 
