1138 ARBORETUM AND FRUTICETUM. ’ PART III. 
purple, size of those of #. ditricum, disposed in umbellate corymbs. Calyx purple. Filaments 
bearded at the base. Stigma capitate. (Don’s Miil., iii. p. 844.) "A native of Nepal, in Gossain- 
than ; where it is a shrub, growing from half a foot to one foot in height ; but it has not yet flowered 
in England, where it isconsidered as a frame shrub. It was introduced in 1825; but we have not 
seen the plant. 
# 2. macroph%lium D. Don (G. Don’s Miill., iii. p. 843.) is a native of the north-west coast of North 
America, where it was collected by Mr. Menzies; and there are specimens in Mr. Lambert’s herba- 
rium; but the plant has not yet been introduced. The petioles of the leaves are | in., and 
ais disks from 7 in. to8 in., long; and the flowers are smaller than those of #2. maximum, and 
white, 
§ ii. Leptpherum D. Don. 
Derivation. From Jepis, a scale, and pherd, 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, but generally persistent. Shrubs, natives of Europe, North 
America, and the Himalayas. 
2. 12. R. vappo’nicum Wahl, The Lapland Rhododendron. 
Identification. Wahl. F1. Suec., p. 249.; Don’s Mill., 3. p. $45. 
Synonymes. Azalea lappénica Lin. FI. Suec., p. 64., Sp., t.214., Fl. Lapp., ed. Smith, p. 59. t. 6. f. 1., 
Hook, Bot. Mag., 3106. ; A. ferruginea Hort. 
Engraving. Our fig. 938. 
Spec. Char., §c. Shrub, branched, procumbent. Branches divaricate. Co- 
rollas rotately funnel-shaped. Young branches obscurely pubescent, warted. 
Leaves oblong, obtuse, stiff, beset with honeycomb- 
like dots, yellowish and scaly beneath; deep green 
above; and pale green, and at length yellowish, beneath ; 
thickly beset with hollow dots on both surfaces, which 
are covered by umbilicate permanent scales. Flow- 
ers crimson, disposed in umbellate corymbs, 5—6 to- 
gether, surrounded by large dotted scales, or bracteas. 
Calyx covered with yellow scales, ciliated. Segments 
of corolla unequal, and undulated. Stamens 5—8, equal 
in length to the corolla. Stigma capitate, 5-lobed, Fila- 
ments hairy at the base. (Don's Mill., iii. p.845.) It is 
a native of the arctic regions of Europe, Asia, and North 
America, where it forms a procumbent shrub, flowering 
in July. Introduced in 1825, but rare in collections. 
«wv 13. R. pau‘ricum ZL. The Dahurian Rhododendron. 
Identification. Lin, Sp., 562.; Don’s Mill., 3. p 845.; Lodd. Cat., ed. 1836. 
Engravings. Pall. Fl. Ross., 1. p. 47. t. 32.; Andr. Bot. Rep., t.4.; Bot. Mag., t. 836.; Lodd. Bot. 
Cab., t. 605.; Amm. Ruth., 181. t. 21. 
Spec. Char, §c. Leaves deciduous, oblong, attenuated at both ends, gla- 
brous, 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 fall in autumn, they 
become of a dusky red colour. The fiowers rise before the leaves, from the 
tops of the branches, from buds which are composed of concave downy 
scales. Corolla purple. (Don’s Mill., iii. p. 845.) It is a native of Siberia, 
pecunar to the alpine tracts of Eastern Asia. It appears first at the mouth 
of the river Yenissei; and beyond that, especially from the DL 
river Uda, in the pine woods, it begins to be common; but 
about the Baikal it is most abundant, 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. 
Pallas informs us that the leaves are narcotic, fragrant, and * 
possess the odour of those of Lédum palistre ; and that, like (3% 
it, they are used to drive away bugs, and also as tea. The 
fruit, he says, is employed for intoxicating fish, but in what 
manner, or for what purpose, he does not state. A shrub, 
growing from 2 ft. to 6 ft. high ; flowering from December to 
March, Introduced in 1780, and frequent in collections. 939 



