292 BALFOUR—RHODODENDRON : 
Western Yunnan. Shweli-Salween divide. Jangtzow Shan. 
mite Wivoow fers hat oe? to” Ne On chitis, ~ Dap a Pra: 
Forrest No. 18,308. Aug. rg10. 
The N’ Maikha-Salween form of this species is much finer than 
the Shweli-Salween one if one may judge by the dried specimens. 
The beautiful white underleaf in the N’Maikha plant contrasts 
well with the bright flower colour. Note how much larger this 
is than the Shweli-Salween plant No. 18,178 in the striking feat- 
ure of leaf. In calyx the latter is first. The phylum resem- 
blance is very evident and the species is near Rh. sanguineum 
itself—indeed its bright foliage and flower bring it at sight close 
to Rh. sanguineum but its glandular features keep it separate. 
Other plants collected by Forrest are perhaps this species :— 
No. 18,082. Shweli-Salween divide. Jangtzow Shan. Alt. 
12,000 ft. Lat. 25° ro’ N. On rocky slopes and cliffs. Shrub 
of 2%-4 ft. Flowers dark crimson tinged orange. June 1919. 
No. 18,322. Shweli-Salween divide. 12,000 ft. - Lat. 25° 40! 
N. Open bouldery slopes. Shrub of 3-4 ft. Flowers rose 
flushed orangé? In fruit. Aug. 1919. 
And then from Farrer we have probably the same in his No. 
1024. N.E. Upper Burma, Hpimaw Pass. Alt. 10,500 ft. 
_June 19, 1919. A small bush in rocky gully on the west side of 
Hpimaw Pass. Flowers waxy scentless with deep nectaries ; of a 
variable colour in shades of apricot, bronze and coppery-yellow. 
Very abundant over all the high-alpine slopes. 
wad Rhododendron semilunatum, Balf. f. et Forrest. 
Frutex virgatus vix I m. altus. Rami stricti erecti, hornotini 
tenuiter lanati et sparsim lepidoti, annotini albidi sparsim 
verruculosi nunc pilorum vestigiis notati. Folia papy- 
racea decidua post flores evoluta breviter petiolata ad 2.8 cm. 
longa (vix matura) ; lamina papyracea ovalis vel oblongo-ovalis 
circ. 2.5 cm. longa 1.3 cm. lata, apice rotundata vel obtusa tuber- 
culato-mucronata, margine plana sparsim tenuiter setuloso-ciliata 
demum nuda, basi obtusa vel attenuata ; supra laete viridis opaca 
glabra (costa media rubra puberula excepta); subtus pallidior 
griseo-viridis squamis discontiguis (in quoque mm. quadr. circ. 
$-10) inaequalibus majoribus flavidis scintillantibus minoribus 
nigricantibus lepidota, costa media elevata lepidota et squamis 
_ crispatis basim versus vestita, venis primariis utrinsecus circ. 8 
paullo prominulis ; petiolus circ. 3 mm. longus ut rami juveniles 
vestitus. Umbellae 2~3-florae; pedicelli glauco-caerulei lepidoti 
nunc etiam sparsim setulosi circ. 1.5 cm. longi sub calyce ampli- 
ati. Calyx parvulus obliquus vix 2 mm. longus in lobos 5 semilu- 
natos ad marginem undulatus; lobi subcarnosuli extus sparsim 
pid th squamo-ciliati nunc paucis setulis ciliati. Corolla lutea 
