1138 



ARBORETUM AND FRUTICETUM. 



PART III. 



puipte, size of those of R, dliurienm, disposed in umbellate corymbs. Calyx purple. Filaments 

 bearded at the base. Stigma capitate. (Don's Mill., iii. p. 844.) A native of Nepal, in Gossain- 

 th.m ; 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 is considered as a frame shrub. It was introduced in 1825; but we have not 

 seen the plant. 



* IS. rnacropliplhtm D. Don (G. Don's Mill., iii. p. 843.) is a native of thenorth-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 1 in., and 

 their disks from 7 in. to S in., long ; and the flowers are smaller than those of R. maximum, and 

 white. 



§ ii. Lepipherum D. Don. 



Derivation. From lepis, a scale, and 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, but generally persistent. Shrubs, natives of Europe, North 

 America, and the Himalayas. 



fu 12. JR. lappo'nicum Wahl. The Lapland Rhododendron. 



Identification. Wahl. Fl. Suec, p. 249. ; Don's Mill., 3. p. 845. 



Si/noni/mes. Azalea lapponica Lin. Fl. 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., Src. 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- H 

 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. {Dons Milium, 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 1 825, but rare in collections. 



sk n. 13. R. dau v ricum L. The Dahurian Rhododendron. 



Identification. Lin. Sp., 562. 



Engravings. Pall. Fl. Ross., 



Cab., t. 605. ; Aram, Ruth. 



, Don's Mill., 3. p 845. ; Lodd. Cat, ed. 1836. 

 1. p. 47. t. 32. ; Andr. Bot. Rep., t. 4. ; Bot. Mag. 

 181. t. 21. 



t. 836.; Lodd. Bot. 



Spec. Char., fyc. 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 flowers 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, 

 peculiar to the alpine tracts of Eastern Asia. It appears first at the mouth 

 of the river Yenissei ; 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, 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 .Ledum palustre; and that, like 

 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, 

 crowing from 2 ft. to oft. high ; flowering from December to 

 March. Introduced in 1780, and frequent in collections. 939 



