XLII. ERICA‘CEE: RHODODE/NDRON. 587 
now one of the most common species, and the hardiest, in gardens. Flowers 
rosy lilac; June to August. Capsule brown; ripe in September. 
Varieties. 
na R.c. 2 Russellianum Brit. Fl.-Gard. 2d ser. t.91.— Leaves oblong 
finely tomentose beneath. Corymbs many-flowered. Flowers of a 
bright rosy red, approaching to crimson. A hybrid raised from the 
seed of 2. catawbiénse, impregnated by the pollen of 2. arboreum, 
by Mr. Russell of Battersea. A very splendid variety, but some- 
what tender. 
a R.c. 3 tigrinum Hort.—A variety with a corolla much resembling that 
of R. c. Russellidnum, but with obvious spots on the inside. 
It is of more robust growth than either R. pénticum or R. maximum, but, * 
in other respects, seems intermediate between them. There are many hybrids 
in cultivation between it and the former species, though without names. 
« 6. R. curysa’ntuum L. The golden-fowered Rhododendron. 
Identification, Lin. Syst., 405., Suppl., 237. ; Don’s Mill., 3. p. 843. 
Synonyme. R. officinale Salish. p. 12). t. 54. 
Engravings. Salisb. Par. Lond., t. 80. ; and our jig. 1107. 
Spec. Char., §c. Leaves acutish, attenuated at the base, oblong, glabrous, 
reticulately veined, and of a rusty colour beneath. Flowers and buds 
clothed with rusty tomentum. Pedicels hairy. Calyx hardly any. Seg- 
ments of the corolla rounded. Ovarium tomentose. 
Branches decumbent, beset with rusty stipule-formed 
scales. Flowers handsome, large, drooping, revolute, 
rather irregular, yellow. Stigma 5-lobed. (Don’s Mill.) 
A low evergreen undershrub. Siberia, on the highest 
mountains ; and Caucasus and Kamtschatka. Height 
6in. to 1ft. Introduced in 1796, but not common if 
in collections, being very difficult to keep. Flowers WOES 
yellow ; June and July. 1107. R. chrys&nthum. 
EF 2- 
are 
oN 
It requires to be grown in rather moist peat, kept firm, in an open 
airy situation. 
2 7, R. cauca’sicum Pall, The Caucasian Rhododendron. 
Identification. Pall. F1. Ross., 1. p. 46. t. 30. ; Don’s Mill, 3. p. 844. 
Engravings. Bot. Mag., t. 1145. ; and our fig. 1108. 
Spec. Char., §c. Leaves ovate-oblong, clothed with 
rusty tomentum beneath, rugged and green above. 
Peduncles hairy. Bracteas elongated, tomentose. 
Ovarium downy. Root creeping. Branches pro- 
cumbent. Flowers purple or white, disposed in 
umbellate corymbs. _ Corollas rotate, with wavy 
rounded segments. (Don’s Mill.) A compact ever- 
green shrub. Caucasus, on high rocks, near the 
limits of perpetual snow. Height 1ft. Introduced 
in 1803, but rare in collections. Flowers white 
or purple; August. 1108. R. caucdsicum. 
Varieties. The following hybrids are among the handsomest rhododendrons 
in cultivation :— 
nm R.c. 2 stramineum Hook. Bot. Mag. t. 3422.— Corollas straw-co- 
loured. A plant of this variety in the Glasgow Botanic Garden, in 
April, 1835, was 2 ft. high, and 3 ft. in diameter, with the extremities 
of its fine leafy branches terminated with clusters of large, beautiful, 
straw-coloured flowers, The climate of Scotland seems to suit this, 
and some of the other species found in the coldest parts of the 
Russian empire, better than that of the South of England. 
2 R.c. 3 pulchérrimum Lindl. Bot. Reg. t. 1820. f. 2,— A hybrid ob- 
