XLIII. ERICA‘CEH: RHODODE/NDRON. 585 
379., and our fig. 1102.; is ahybrid between FR. pénticum and 
some species of Azalea with fragrant blossoms. It was originated 
about 1820, and is a favourite in collections. 
« R. p. 7 fragrans Chandler (Herd. Amaryl, p. 356.) was raised in 
the Vauxhall Nursery. 
Nursery Varieties. The following are cultivated by Messrs. Loddiges :— 
R. p. album. R. p. ceruléscens. R. p. fronddsum. R. p. obtdsum. 
angustifdlium. eontortum. grandifldrum. ovatum. 
angustissimum. crispum,. incarnatum. pygme‘um. 
arbutifolium. fi. pléno. intermédium. roseum, 
bromeliefolium. fol. argénteis. kalmiefolium. salicifolium 
bullatum. fol. adreis. macrophyllum, spectabile. 
cassinefolium. fol. marginatis. nivaticum. violaceum, 
The Rhododéndron ponticum is the commonest species of the genus in 
British gardens, where it grows to the height of from 5 ft. to 15 ft., or up- 
wards ; forming a dense bush, which will spread over a large space, if it be 
allowed abundance of room. In proper soil, if kept moist, the plant will 
make shoots, when young, of 1 ft. or more in length in a season, attaining the 
height of 4 or 5 feet in 5 or 6 years: but afterwards it grows more slowly; 
and, when a large bush, seldom makes shoots above 6in..in length. It ap- 
pears to be of considerable durability. In cool, loamy or sandy, and some- 
what moist soils, it is planted in woods as ornamental undergrowth, and 
succeeds perfectly, both in England and Scotland. It will grow in almost 
any soil; but, in England, it seems to thrive best in sandy peat, or deep 
sandy loam. In the common manured earth of gardens it succeeds worse 
than in unmanured loams of a close texture, even strong clays, particularly 
if the latter be kept moist. The want of tenacity of the manured garden soil 
alluded to, more especially in a dry season, seems not to allow it to cohere 
sufficiently to the small hair-like roots of this order of plants, to enable their 
very minute spongioles to imbibe nourishment from it. 
# 2, R.wa’xtmum L. The largest Rhododendron, or American Rose Bay. 
Identification. Lin. Sp. Pl., p. 563. ; Don’s Mill., 3. 
p. 843.; Lodd. Cat., ed. 1836. 
Engravings. Lam. Ill., 364. ; Schmidt Baum., t. 121. ; 
and our jig. 1103. 
Spec. Char., §c. Arborescent. Leaves 
elliptic-oblong, acute, convex, bluntish 
at the base, whitish or rusty beneath, 
glabrous. Calycine segments oval- 
obtuse. Segments of corolla roundish. 
Flowers pale red, in umbellate co- 
rymbs, studded with green, yellow, or 
purple protuberances. (Don’s Mill.) 
An evergreen shrub. Canada to 
Carolina, on the mountains, near rivu- 
lets and lakes, upon rocks and barren 
soils. Height 10ft. to 15 ft. Intro- 
duced in 1736. Flowers pale red, and yellowish ; 
June to August. Capsules brown; ripe in 
September. 
1103. 4. maximum. 
Varieties. 
2 R. m. 2 dlhum Hort.— Flowers pure white, 
and is comparatively rare in British gar- 
dens. 
«a R.m. 3 hibridum Hook. Bot. Mag. t. 3454. 
(and our fig. 1104.) R. fragrans Hort., 
R. hybridum Lodd. Cat.— Supposed to 
be a hybrid originated by fertilising the 
common white glaucous-leaved Azalea 
with the pollen of R. maximum. This 1104, Rm. hybrdum, 
