ERICACEÆ. XLIII. RHODODENDRON. 
20 R. rormòsum (Wall. pl. rar. asiat. 3. p. 3. t. 207,) leaves 
lanceolate, acute, attenuated at the base, beset with rusty dots 
beneath ; segments of corolla entire, flat; filaments bearded ; 
ovarium 10-celled. h.F. Native of Nipaul. Leaves an inch 
and a half long. Flowers about the size of those of R. Ponticum, 
white, suffused with red. Limb of calyx short. 
Showy Rhododendron. Shrub. 
Secr. III. Pocona’nruvum (from rwywr, pogon, a beard ; and 
av6oc, anthos, a flower; throat of corolla woolly inside). Limb 
of calyx short, 5-lobed. Corolla salver-shaped, with a cylindrical 
tube, and a spreading limb. Stamens 8, inclosed. Ovarium 
5-celled.—Leaves evergreen, coriaceous. 
21 R. anrnopdcon (D. Don, in mem. wern. soc. 3. p. 409.) 
branchlets downy ; leaves oval, rusty beneath from lepidoted 
tomentum ; corollas with a woolly throat. h. F. Native of 
Nipaul, on Gosaingsthan. R. aromdaticum, Wall. cat. Shrub 
much branched. Leaves ending in a reflexed mucrone, 
naked above. Flowers glomerate, sulphur-coloured. Pedicels 
short, lepidoted and resinous. Calycine segments rounded at 
the apex, with villous margins. Segments of corolla roundish, 
with undulately curled margins. Filaments glabrous. Stigma 
clavate. 
Bearded-flomered Rhododendron. Fl. April, May. Clt. 1820. 
Shrub 1 to 14 foot. 
Sect. IV. LEPÍPHERUM (from Aeric, lepis, a scale; and gepw, 
phero, to bear ; leaves covered with small scales.) Limb of calyx 
dilated, 5-lobed. Corolla campanulate or rotate. Stamens 10, 
Ovarium 5-celled. Leaves membranous, sometimes deciduous. 
22 R. Lepidtum (Wall. cat. 758.) every part of the plant is 
beset with ferruginous scale-like dots; leaves spatulate or lan- 
ceolate, attenuated at the base, beset with round scale-like dots, 
as well as the branchlets, ferruginous beneath ; calycine segments 
rounded ; corollas short, campanulate, lepidoted, with roundish 
entire lobes; capsules also Jepidoted; filaments woolly at the 
base. h.F. Native of Nipaul. A widely-branched shrub, 
with the habit of R. Daúricum. Leaves of a thinner texture, 
about an inch long. Flowers as well as the capsule covered 
with round rust-coloured scales. Flowers deep pink, solitary 
or 2-5 together, terminal, on short filiform pedicels. 
Scaly-dotted Rhododendron. Shrub 2 to 3 feet. 
23 R. Lappénicum (Wahl. fl. suec. p. 249.) shrub branched, 
procumbent; branches divaricate ; corollas rotately funnel- 
shaped; leaves oblong, obtuse, stiff, beset with foveolate dots, 
yellowish and lepidoted beneath. h.H. Native of the Arctic 
regions of Europe, Asia, and North America. Azalea Lappo- 
nica, Lin. fl. suec. p. 64. spec. 214. fl. lapp. ed. Smith, p. 59. 
t. 6. f. 1. Hook. bot. mag. 3106. Young branches obscurely 
pubescent, warted. Leaves deep green above, pale green and at 
length yellowish beneath, thickly beset with hollow dots on both 
Surfaces, which are covered by umbilicate permanent scales. 
Flowers crimson, disposed in umbellate corymbs, 5-6 together, 
surrounded by large dotted scales or bracteas. Calyx covered 
with yellow scales, ciliated. Segments of corolla unequal, un- 
dulated. Stamens 5-8, equal in length to the corolla. Stigma 
capitate, 5-lobed. Filaments hairy at the base. 
Lapland Rhododendron. Fl. July. Clt. 1825. 
cumbent. 3 
24 R. Dav'ricum (Lin. spec. 562.) deciduous ; leaves oblong, 
attenuated at both ends, glabrous, lepidoted from rusty scales, 
particularly beneath; limb of calyx 5-toothed ; corollas rotate. 
kh. H. Native of Siberia, peculiar to the alpine tracts of East- 
ern Asia; it appears first at the mouth of the river Yenesee, and 
beyond that, especially from the river Uda, in the pine woods, it 
begins to be common; but about the Baikal it is most abundant, 
Shrub pro- 
845 
and extends through the deserts of the Mongols to China and 
Thibet; at the Lena it becomes more rare, and beyond that it is 
much dwarfer, with more slender flowers and narrower leaves. 
Pall. fl, ross. 1. p. 47. t. 32. Andr. bot. rep. t.4. Curt. bot. 
mag. t. 636. Lodd. bot. cab. 605.—Amm. ruth. 181. t. 21. 
Roots knobbed, bound by fibres. Stems twisted and knobbed 
in the wild state. Petioles downy. Leaves dotted on both sur- 
faces, but ferruginous beneath ; before the fall 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 composed 
of concave downy scales. Corollas purple. 
Var. B, atrovirens (Ker. bot. reg. t. 194.) evergreen ; leaves 
deep green and shining above. h.H. Native of Siberia. 
Sims, bot. mag. 1888. 
Daurian Rhododendron, Fl. March, Dec. Clt. 1780. Shrub 
2 to 6 feet. 
Secr. V. Cuamacistus (from yapa, chamai, on the ground ; 
and cistus, the rock-rose: plants with the habit of species of 
Helidnthemum. - Limb of calyx foliaceous, 5-cleft. Corolla 
rotate. Stamens 10. Ovarium 5-celled.—Leaves small, mem- 
branous, evergreen. 
25 R. Camrtscua’ticum (Pall. fl. ross. 1. p. 48. t. 33.) leaves 
obovate, acutish, 5-nerved, naked, ciliated ; peduncles hairy, 
usually twin; calycine segments ciliated, foliaceous. h. H. 
Native of Kamtschatka and the Aleutian Islands, in muddy 
places on the mountains. Gmel. sib. 4. p. 126. no. 13. Corollas 
purple, rotate. A prostrate shrub. 
Kamtschatka Rhododendron. Fl. July. Clt. 1802. 
prostrate. 
26 R. cuamacistus (Lin. spec. 562.) leaves oblong-lanceo- 
late, attenuated at both ends, stiffish, glandularly ciliated ; pe- 
duncles usually twin, and are as well as the calyxes beset with 
glandular hairs. Ļ. H. Native of the Alps of Europe; as 
of Austria, Carniola, Mount Baldo, and near Salzburgh; and 
in Eastern Siberia. Jacq. fl. austr. 3. t. 217. Curt. bot. mag. 
t. 488. Lodd. bot. cab. 1491.—Mich. gen. 225. t. 106.—Pluk. 
phyt. t. 23. f. 4. Corollas rotate, pale purple. A dwarf tufted 
shrub, with small leaves, about the size of those of a species of 
‘Helidnthemum. 
Ground-Cistus Rhododendron. Clt. 1786. 
Shrub 4 foot. 
Shrub 
Fl. May, June. 
Secr. VI. Tsutsu‘rst (the Chinese name of the first species). 
Limb of calyx foliaceous, 5-cleft. Corolla campanulate. Stamens 
5-10. Ovarium 5-celled.— Leaves membranous, evergreen, 
hispid from pili. : 
27 R. I’npicum (Sweet, fl. gard. n. s. 128.) branches strigose ; 
leaves cuneate-lanceolate, finely crenulated, strigose, attenuated 
at both ends; calycine teeth long-lanceolate, obtuse, ciliated, 
spreading ; flowers terminal, solitary or twin, decandrous. 
h. S. Native of China. Much cultivated in Japan for the 
sake of its elegant flowers. Azalea Indica, Lin. spec. 214. 
Thunb. jap. 84. Sims, bot. mag. 1480. Lodd. bot. cab. 275.— 
Herm. lugdb. 152. t. 153. Tsut-sut-si, Koempf. amoen. 845. 
t. 146. Flowers showy, scarlet or red. 
Var. B, pilchrum (Sweet, fl. gard. n. s. 117.) calyx very 
hairy, with subulate segments ; leaves elliptic, acute ; flowers 
decandrous, terminal, 2-3 together. h.G. A hybrid between 
R. ledifolium, impregnated by the pollen of R. Tndicum. R. 
Indicum, var. y, Smithii, Sweet, hort. brit. 2. p. 343. Co- 
rollas large, of a deep rosy purple, spotted with deep red 
inside. 
hans y, ignéscens (Sweet, fl. gard. n. s. 128.). The four 
lower segments of the corolla flame-coloured, and the superior 
one lilac, and obsoletely dotted. h.S. Native of China. 
