98 PRESENT-DAY GARDENING 
R. campy hear pum. — Sikkim, 14,000 feet. 1851. A sturdy 
shrub up to 8 feet. Evergreen. Leaves heart-shaped, green 
on both surfaces, with closely reticulating veins, about 3 
inches long. Flowers honey-scented on slender pedicels, 
in loose heads, bell-shaped, yellow, i inch long. There 
is a white-flowered variety. Hardy. 
R, camelliceflorum. — Himalaya, 13,000 feet. 1851. A 
shrub 6 feet. Evergreen. Leaves oblong, scaly be- 
neath, 3 inches long. Flowers several together on short, 
scaly stalks, corolla wide-spreading, white, i inch across. 
Tender. 
R, catawhiense, — S. United States. 1809. A stout 
shrub 3~6 feet. Evergreen. Leaves oblong, rounded at 
both ends, glabrous, dark-green above, paler beneath, 5 
inches long. Flowers bell-shaped, lilac-purple with red 
spots. Hardy. 
R. caucasicum. — Caucasus. 1803. A spreading shrub, 
3 feet. Evergreen. Leaves lance-shaped or ovate, leathery, 
dark-green, rust-hairy beneath, margins revolute. Flowers 
in corymbs, bell-shaped, rose-red, white within, with green 
spots on the upper segments. There are several named 
varieties. Hardy. 
R. ChampioncB. — China. 1890. An evergreen shrub 
7 feet high, with the habit of R. flavum ; leaves lanceolate, 
3 inches long, dark-green, hairy. Flowers in compact 
umbels, 4 inches across, in shape like an Indian Azalea, 
pale-rose. Tender. 
R, chartophyllum. — S. China. 1907. In the way of 
R, Yunnanense, but the leaves are narrower and not hairy, 
and the flowers are smaller. 
R. ciliatuni. — Himalaya, 10,000 feet. 1850. Aspreading 
shrub, branches twiggy, 4 feet or more high. Evergreen. 
