Ce) 
I10 BALFOUR—NEW SPECIES OF RHODODENDRON. 
long bristle-crest ; pedicel short usually barely 1 cm. long some- 
times a little longer glaucous sparingly lepidote more densely 
so at expanded top under calyx. Calyx small about 1.5 mm. 
long with 5 rounded lobes each under 1 mm. in length, lepidote 
outside the margins of the lobes sparingly setulose and often 
scale-fringed. Corolla white open butterfly-shaped a little over 
3 cm. long; tube funnel-shaped from the base hardly laterally 
compressed with one shallow median inside groove on the 
posterior petal scarcely forming a ridge outside, base barely 
gibbous, puberulous inside, puberulous and lepidote all over 
outside, expanding into a broad 5-lobed spreading limb ; 
lobes broad elliptic about 1.7 cm. long 2 cm. broad auriculately 
overlapping subequal. Stamens 10 unequal shorter than corolla, 
longest about 2.7 cm. long with anther about 3 mm. long, 
shortest about 1.3 cm. long with anther about 2 mm. ; filaments 
dilated downwards glabrous at very base then puberulous to 
above the ovary. Disk shortly puberulous. Gynaeceum about 
2.8 cm. long shorter than corolla ; ovary conoid truncate grooved 
about 4 mm. long, densely covered with imbricate peltate scales ; 
style glabrous expanding clavately under the broad discoid 
lobulate stigma. 
W. Yunnan. Shweli-Salween divide. Lat. 25° 30’ N. Alt. 
gooo—10,000 ft. Open rocky slopes. Shrub of 6-9 ft. Flowers 
white. G. Forrest. No. 17,593. May-June 1918. 
This species is a near ally of Rh. zaleucum, Balf. {. et W. W. 
Sm. in the Triflorum series, and if it be hardy will be an acquisi- 
tion as a plant of the garden. Rh. zaleucum coming from the 
same latitude and as low an altitude is hardy and gives hope 
therefore that Rh. ervtleucum will be so. By its broader oval 
or oboval shortly acuminate not lanceolate longly acuminate 
leaves Rh. erileucum is readily distinguished from Rh. zaleucum. 
Our specimens show it to be less floriferous than that species 
and also less inclined to branch freely from below the flower- 
truss. Most of the shoots show only small subfloral leaf-buds and 
the trusses are always solitary. The puberulous outside surface 
of the corolla may also be taken as a conspicuous difference be- 
tween the species if it be a constant character but of this I am not 
satisfied. Rh. erileucwm adds another to the number of species of 
the Triflorum series known from Western Yunnan where up till 
now explorers have not shown it to be abundantly represented. 
’ . Rhododendron erythrocalyx, Balf. f. et Forrest.* (Selense.) 
Twiggy shrub about 2.5 m. high with thin straight branches 
about 3 mm. in diameter when a year old, the annual — 
* Rhododendron erythrocalyx, Balf. f. et Forrest.—Frutex ad ulis 
tenuibus virgatis paucis strictis plus minusve rubro- pote Alabastra 
