XLII. ERICA‘CEH: RHODODE’NDRON. 59) 
by umbilicate permanent scales. Flowers crimson, 
disposed in umbellate corymbs, 5—6 together, sur- 
rounded by large dotted scales, or bracteas. Calyx 
covered with yellow scales, ciliated. Segments of of 
corolla unequal, and undulated. Stamens 5—8, equal & 
in length to the corolla. Stigma capitate, 5-lobed. 
Filaments hairy at the base. (Don’s Mill.) A procum- 
bent evergreen shrub. Europe, Asia, and North America, 
in the Arctic regions. Height 6 in. to 1ft. Introduced in 
1825. Flowers crimson ; May. 
% 15. R.pAv‘ricum LZ. The Dahurian Rhododendron. 
Identification. Lin. Sp., 562.; Don’s Mill., 3. p. 845. 
Engravings. Pall. Fl. Ross., 1. p. 47. t. 32.; Bot. Mag., t. 836.; and our 
sig. V7. 
Spec. Char., §c. Leaves deciduous ; oblong, attenuated at both ends, glabrous, 
but sprinkled with rusty scales, especially beneath. Limb of calyx 5-toothed. 
Corollas rotate. Roots knobbed, abounding in fibres, Stems twisted 
and knobbed in the wild state. Petioles downy. Leaves dotted on both 
surfaces, but ferruginous beneath. Before they fal! in autumn, they become 
of a dusky red colour. The flowers rise before the leaves, 
from the tops of the branches, from buds which are com- 
posed of concave downy scales. (Don’s Mill.) A deciduous 
shrub. Siberia, peculiar to the alpine tracts of Eastern 
Asia. Height 2it. to 6 ft. Introduced in 1780. Flowers 
purple ; December to March. 
1116. R. Jappénicum. 
Variety. 
& a R. d. 2 atrovirens Ker. (Bot. Reg., t. 194; Bot. Mag., a } 
t. 1888.) — Sub-evergreen. Leaves deep green, and 
shining above; persistent. Siberia. 
Very desirable low shrubs, from their flowering so early in 
the season; but, to thrive, they require peat soil. Gas decane: 
R. lepiddtum Wall. (Royle Mlust., p. 260. t. 64. f. 1. ; Don’s Mill., 3. p. 845.) 
is a native of Nepal, with the habit of R. ddtricum, but with leaves of a 
thinner texture; and with every part of the plant beset with ferruginous 
scale-like dots. It grows to the height of 2 or 3 feet, but has not yet been 
introduced. 
§ v. Chamecistus D. Don. 
Derivati From ch. i, on the ground, and cisiws, the rock rose; plants with the habit of 
species of Helianthemum. 
Sect. Char. Limb of calyx foliaceous, 5-cleft. Corolla rotate. Stamens 10 
Ovarium 5-celled. Diminutive, prostrate, evergreen 
shrubs, with small membranous leaves. 
2. 16. R. camrscua’ticum Pall, The Kamtschatka 
Rhododendron. 
ficatic ° ait 33S *s Mill, 3. p. 845. 
pea . eek dae ray ene. ie eer Mh is? 
Spec. Char., §e. Leaves obovate, acutish, 5-nerved, 
naked, ciliated ; peduncles hairy, usually twin. Caly- 
cine segments ciliated, foliaceous. Corollas purple, 
rotate. (Don’s Mill.) A prostrate evergreen shrub. 
Kamtschatka and the Aleutian Islands, in muddy 
places on the mountains. Height 6in. tol ft. In- 
trodaced in 1802, but rare in British gardens. Flow- 
ers purple; July. 1118. R. camtschaticum. 
