Ericacee— Rhododendron. 283 
In addition to the above hardy or almost hardy species there 
are many others of more recent introduction, generally termed 
Sikkim Rhododendrons, which are even more strikingly beau- 
tiful both in foliage and inflorescence ; but unfortunately they 
are tender, requiring protection in ordinary winters. Another 
objection to planting them in the open ground is the early 
flowering season of most of the species, and consequent greater 
liability to injury from frost. Some of these species have 
tubular corollas with a rotate limb, while others have them 
broadly expanded and of immense size, more resembling those 
of a Camellia. Though these are more suitable for the tempe- 
rate house, we cannot omit to notice some of the better known 
species, 
Rh. Windsori, a small shrub from Bootan, where it grows 
up to an elevation of 8,000 to 9,000 feet. Leaves coriaceous, 
obovate-lanceolate. Flowers from a deep purple to nearly 
white.—Rh. Campbéllic, a tree from 30 to 35 feet high in 
its native country, the Sikkim Himalayas. It is very near Rh. 
arborewm, differing in its more coriaceous leaves, which are 
cordate at the base and rusty beneath. The crimson spotted 
flowers are in dense clusters. — Rk. argénteum, a tree of 
about the same dimensions as the last, with noble foliage a foot 
or more in length, silvery beneath. The campanulate flowers 
are very large, rose or white with a purple blotch at the base. 
—Rh. Falconéri : this species is even finer than the last, if we 
only consider its large shining leaves, which rival those of the 
Magnolia grandiflora; but its white flowers are comparatively 
small.— Rh. Hodgsémi, a shrub of about half the stature of 
the preceding, but with equally large glabrous leaves. The 
campanulate nearly regular rose-coloured flowers are united in 
clusters of fifteen to twenty, and have eight rounded lobes and 
about sixteen stamens.— Rh. Nuttdllaz, a noble tree attaining 
a height of about 25 feet, with large coriaceous oval leaves 
shining and glabrous above and covered with brown scales 
beneath. But what renders this species remarkable is the 
enormous size of its gorgeous flowers, which are deeply cam- 
panulate and 6 or 7 inches in diameter, white tinged with rose 
and bright yellow in the centre. This is perhaps the grandest 
of all Rhododendrons.—Rh. Maddéni, a shrubby species 
about 6 feet high with erect slender branches, which, as well 
as the under side of the leaves, are clothed with a rusty 
tomentum. The flowers are pure white, tubular, from 4 to 5 
