1134 - ARBORETUM AND FRUTICETUM. PART 111. 
Commercial Statistics. The price of plants of the species, in the London 
nurseries, is from 1/, 5s. to 5/. per hundred ; and of the varieties, from 1s. 6d. to 
5s. each; and seeds are 2s. per ounce. . At Bollwyller, 2 years’ seedlings are 
25 francs per hundred, and the varieties from 1 franc to2 francs each. At New 
York, plants of the species are 1 dollar each, and of the varieties 2 dollars. 
a 2. R.ma’ximum 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. Bot. Mag., t.951. ; Lam.IlL, 364; Schmidt Baum., t. 121.; Mill. Icon., 229.; Catesb. 
Car., 3. t. 17. £.2.; and our fig. 932. 
Spec. Char,, §c. Arborescent. Leaves elliptic-oblong, acute, convex, blunt- 
ish at the base, whitish or rusty beneath, glabrous. Calycine segments 
oval-obtuse. Segments of corolla roundish. Flowers pale red, in umbel- 
late corymbs, studded with green, yellow, 
or purple protuberances. (Don’s Mill., 
iii. p. 843.) A native of North Ame- 
rica, from Canada to Carolina, on the 
mountains, near rivulets and _ lakes, 
upon rocks and barren soils, where it 
continues flowering a great part of the 
summer ; and where it forms a shrub 
growing to the height of from 10 ft. to 
15 ft., Howering from June to August. 
Introduced in 1736, and frequent in 
collections. This species is not nearly 
so easy of culture as 2. pénticum, and 
neither grows nor flowers so freely in 
British gardens. Though introduced by Peter Collinson in 1736, it 
did not flower in England till 1756, as Miller informs us; who adds, 
that the only person who then succeeded in raising it was Mr. James 
Gordon, at Mile End. The culture, &c., are the same as for R. ponticum. 
Plants of this species, in the London nurseries, are 1s. each, and seeds 3s. 6d. 
per oz.; at Bollwyller plants are 4 and 5 francs each ; and at New York, from 
50 cents to 1 dollar, and of the white variety 2 dollars. 

Varieties. 
# R. m. 2 album Hort. has pure white flowers, and is comparatively 
rare in British gardens. 
# R. m. 3 hijbridum Hook. Bot. Mag., t.3454.; R. fragrans Hort.; R. 
hybridum Lodd. Cat.; is supposed to be a hybrid originated by fer- 
tilising the common white glaucous-leaved Azalea with the pollen 
of R. maximum. This variety has fragrant flowers, and, according 
to Sir W. J. Hooker, is “ amply worthy of a place in every garden 
and shrubbery.” 
# ¢ 3. R.(m.) puRPU‘REUM G. Don. The purple-flowered Rhododendron, or 
American Rose Bay. 
Identification. Don’s Mill., 3. p. 843. 
Synonymes. R. maximum y purpureum Pursh Fl. Amer. Sept., 1. p. 297.3; 2. ponticum macro- 
phyllum Lodd. Cat. 
Spec. Char., &c.  Arboreous. Leaves large, oblong-elliptic, flattish, acute, 
bluntish at the base, green, and glabrous on both surfaces. Segments of 
corolla oblong and obtuse. Flowers large, purple. Calycine segments 
obtuse. This shrub approaches near to 2. ponticum ; but it differs in its 
foliaceous calyx, and otherwise. It grows to an immense size; its stem 
being often found 18 in. and more in diameter ; and its foliage triple the size 
of that of any other species. (Don’s Mill, iii. p. 843.) It is a native of Vir- 
ginia and Carolina, on the highest mountains, near lakes ; where it forms a 
large shrub, or tree, growing to the height of 25 ft., flowering in May and 
June. This species appears to be in cultivation in some British nurseries, 
under the name of #. arboreum americanum; but in Messrs. Loddiges’s 
