BALFOUR—NEW SPECIES OF RHODODENDRON. 311 
that there is here as in Rh. dauricum, Linn. a fascicle of 2-3- 
flowered umbels at the end of one shoot. The construction is 
as in others of the Lapponicum series, only here the leafy shoots 
which end in flower trusses are short and many at the end of the 
branches, and give somewhat the appearance of an aggregation 
of umbels. Rh. blepharocalyx (which differs from Rh. intricatum 
in having 5 stamens and style shorter than the ovary) and Rh. 
intricatum are included here because of their indumentum. As 
I have explained under Rh. complexum they have a corolla 
altogether different from the Lapponicums, approaching that of 
the Anthopogons, the Fragrans, the Cephalanthums. In this 
‘sub-series we pass from 2~3-flowered inflorescences, as in Rh. 
tdoneum, Rh. polifolium, and Rh. Websterianum, to 6—7-flowered 
ones in Rh. hippophaeoides. 6~7-flowered trusses occur also in 
Rh. blepharocalyx and Rh. intricatum. The corolla is some tint 
of rose-purple to a purple or light blue, and is lepidote only in 
Rh. idoneum. 10 stamens are the rule, 8-10 in Rh. hippo- 
phaeoides. The style glabrous (in Rh. Websterianum sometimes 
lepidote) is longer than the stamens in Rh. tdoneum and Rh. 
Websterianum, in the others shorter; in Rh. intricatum only 
about as long as the ovary, in Rh. blepharocalyx shorter than 
the ovary. 
KEY TO THE SPECIES. 
1. Corolla lepidote , tos ‘ idoneum. 
Corolla elepidote ‘ ; ; ; 2. 
2. Stamens and style ag et in schol tube . i : 3: 
Stamens and style exserted d ; 4. 
3. Style equalling ovary in ida: ceils Io : intricatum. 
Style much shorter than ovary. Stamens 5. . blepharocalyx. 
4. Inflorescence 6-7-flowered . ‘ : Meise cacusemn, 
Inflorescence 2-3-flowered 5. 
5. Calyx coriaceous under 2 cm. long. ‘Style visio polifoliane 
Calyx membranous 4mm. long. Style lepidote . Websterianum. 
f these species I know in cultivation :—Rh. tdoneum, Rh. 
intricatum, Rh. hippophaeordes. 
SUB-SERIES D. 
Scales of under-leaf indumentum large, uniform, and con- 
colorous, contiguous or nearly so, surface never white but 
fulvous to rufous. Never punctulate 
I associate in a sub-series by themselves three species in 
which the under-leaf indumentum consists of contiguous, 
uniform, concolorous scales, but the whole surface is not bright 
grey or yellowish-grey and shining, but has a more uniform brown 
tint, even bright cinnamon, through all the scales becoming 
coloured alike. There is no sporadic punctulation nor is there 
