XLIII. ERICA CUja : iJHODODE NDROK. 



591 



by umbilicate permanent scales. Flowers crimson, 

 disposed in umbellate corvnibs, 5 6 together, sur- 

 rounded by large dotted scales, or bracteas. Calyx 

 covered with yellow scales, cihated. Segments of 

 corolla unequal, and undulated. Stamens 5 8, equal- 

 in lenirth to the corolla. Stigma capitate, 5-lobed. 

 Filaments hairy at the base. (Bon's Mill.) A procum- 

 bent everareen shrub. Europe, Asia, and North America, 

 in the Arctic regions. Height 6 in. to 1 ft. Introduced in 

 1825. Flowers crimson ; May. 



]5. H. DAU^RicuM L. The Dahurian Rhododendron. 



[Identification. Lin. Sp., 562. ; Don's Mill.. 3. p. 8<1.=). 



\ Engravings. PalL Fl. Ross., 1. p. 47. t. 32. ; Bot. Mag., t. 836. 



i .rtg. 1117. 



and our 



inc. R. lappdnicum. 



\Spec. Char., Sfc. Leaves deciduous ; oblong, attenuated at both ends, glabrous, 

 I but sprinkled with rust\ scales, especially beneath. Limb of calyx 5-toothed. 

 f 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 com- 

 I posed of concave downy scales. (Don's Mill.') A deciduous 

 ' shrub. Siberia, peculiar to the alpine tracts of Eastern 

 j Asia. Height 2 ft. to 6 ft. Litrodnced in 1780. Flowers 

 I purple ; December to March. 



j Variety, 



m m H. d.2 (itrovh-ens Ker. (Bot. Reg., t. 194 ; Bot. Mag., ^|c 

 t, 1888.) Sub-evergreen. Leaves deep green, and 

 I shining above ; persistent. Siberia. 



I Very desirable low shrubs, from their flowering so early in 



jthe season ; but, to thrive, they require peat soil. m?. . djiuncum. 



i R. lepidotum Wall. (Royle Illust., p. 260. t. 64. f. 1. ; Don's Mill., .3. p. 845.) 

 lis a native of Nepal, with the habit of R. dauricum, but with leaves of a 

 ithinner texture ; and with every pait of the plant beset with ferruginous 

 iscale-like dots. It grows to the height of 2 or 3 feet, but has not yet been 

 jintroduced. 



V. Cliamacistus D. Don. 



^Perivation. From chamai, on the ground, and cistus, the rock rose; plants with the habit of 

 species of Heli&nthemum. 



\Sect. Char. Limb of calyx foliaceous, 5-cleft. Corolla rotate. Stamens 10 

 ' Ovarium 5-celled. Diminutive, prostrate, evergreen 

 ; shrubs, with small membranous leaves. 



; t. 16. E. camtscha'ticum PalL 

 j Rhododendron 



<fdenUficaiion. 



The Kamtschatka 



^.ngravmgs. 



Pall. Fl. Ross., 1. p. 48. t. 33. ; Don's Mill., 3. p. 845. 

 Gmel. .Sib., 4. p. 126. No. 13. ; and our^. 1118. 



Spec. Char., Sfc. Leaves obovate, acutish, 5-nerved, 

 naked, ciliated ; peduncles hairy, usually twin. Caly- 



! cine segments ciliated, foliaceous. Corollas purj^le, 



' rotate. (Don's Mill.) A prostrate evergreen shrub. 

 Kamtschatka and the Aleutian Ishmds, in muddy 



j places on the mountains. Height 6 in. to 1 ft. In- 

 troduced in 1802, but rare in British gardens. Flow- 



ers purple ; July. 



camtsch^ticum. 



