. 
206. BaLFOUR—RHODODENDRON : 
dotisub calyce expansi. Calyx parvus ad 2 mm. longus profunde 
5-partitus ; cupula lepidota ; lobi membranacei glabri ovati vel 
oblongo-ovati obtusi cire. 1.5 mm. longi. Corolla late tubulosa 
circ. 7 mm. longa alba extus intusque glabra 5-loba ; lobi ad 2 mm. 
longi oblongo-ovales obtusi integri erecti. Stamina 8 subae- 
qualia circ. 7 mm. longa corollam aequantia ; filamenta in dimidio 
infero glabra vel subglabra, supra medium fere ad antheras puber- 
ula. Discus glaber. Gynaeceum brevissimum corolla stamini- 
busque brevius circ. 5 mm. longum; ovarium ovoideum sulcatum 
truncatum dense albido-lepidotum ad 2 mm. longum; stylus 
ovario paullo longior ad 3 mm. longus crassus clavatus deeurv- 
atus glaber; stigma lobulatum. Capsula valvis 5 dehiscens; 
lamellae placentiferae 5 ad apicem cohaerentes a basi ab axl 
detersiles et in pes ay filorum delicatorum ab apice fructus re- 
sidentes. Species ex affinitate Rh. vaccinioides, Hook. f. 
S.E. Tibet : Tsarong. Salween-Kiu-chiang divide. Lat. 28° 
N. Long. 98° 30’ E. Alt. 12,000 ft. On ledges and in crev- 
ices of cliffs. Shrub of 2-2% ft. Flowers white. Forrest No. 
20,073. July 
‘This interesting pleas of recent acquisition by Forrest is the 
representative in the further East of Hooker’s Sikkim Kh. vac- 
cinioides. It adds another to the series of such representative 
forms as we see in Rh. Falconeri and Rh. sino- -falconeri of the Fal- 
coneri Series; Rh. grande and Rh. sino-grande of the Grande 
Series; Rh. Nuttallii and Rh.sino-nuttallii of the Maddeni Series _ 
—these of the large-leaved species; Rh. lepidotum and Rh. sino- 
lepidotum of the Anthopogon Series ; Rh. virgatum and Rh. sino- 
virgatum amongst the smaller-leaved species. Doubtless we 
shall come to know others. ‘he difference between western and 
eastern form is sometimes not great and perhaps increased know- 
ledge of the area intervening between the Himalaya and the high 
ranges of Western China will bring to us links in the relation- 
ship. I have not had the advantage of being able to dissect a 
flower of Rh. vaccinioides and the material of Forrest’s plantas yet 
available is scanty so that further critical examination will be 
necessary. Iam not however able to correlate precisely the feat- 
ures I find in Forrest’s plant with those of the published descrip- 
tion in the Flora of British India. The Chinese plant is a 
smaller one, differs in the indumentum, and one flower of it-— 
there were only three—which I examined had § stamens; there 
are 10 in Rh. vaccinioides. ‘The type of fruit and seed is note- 
worthy. qT — a further i aoe from additional material 
_ that has come from Forrest 
Capsule slightly curved pointed about 2 cm. long 3.5 mm. in 
et a ona short ‘gynophore, 5-valvate from apex, carpellary 
in crustaceou ape f to axis at apex only and hanging 
