298 ARBORETUM ET FRUTICETUM BRITANNICUM. 
Genus VII. 
~ 
tJ 
KE/RRIA Dec. Tue Kereta, Lin. Syst. Icosindria Polygynia. 
Identification. Dec. in Trans. of Lin. Soc., 12. p.156.; Prod., 2. p. 541. ; Don’s Mill., 2. p.517. 
Synonymes. Rubus L., Cérchorus Thund., Spire‘a Camb. 
Derivati Named in h of W. Ker, a collector of plants for the Kew Gardens. 
Gen. Char. Calyx 5-cleft; lobes ovate, 3 of which are obtuse, and the other 
two callously mucronate at the apex ; imbricate in estivation. Petals 5, 
orbicular. Stamens about 20, arising from the calyx with the petals, ex- 
serted. Carpels 5—8, globose, free, glabrous, each ending in a filiform style. 
Seed solitary. (Don’s Mill.) . 
Leaves simple, ovate, lanceolate, alternate, stipulate, deciduous ; coarsely 
and unequally serrated, feather-nerved, conduplicate, Flowers yellow. 
% 1. K, sapo’nica Dec. The Japan Kerria. 
Identification. Dec. in Trans. of Lin. Soc., 12. p. 156. ; Prod., 2. p. 541. : 
5: Ribus japonicus Lin. Mant. 245. ; Cérchorus Japénicus Thunb. Fl. Jap. 227.; Spire‘a 
Pr. 
japénica Camb. Ann. ‘Sci. Nat. 1. p. 389.; Spirée du Japon, 
Engravings. Swt. Brit. Fl. Gard., 2d ser. t. 337. ; and our fig. 489. 
Spec. Char., &c. Leaves ovate, lanceolate, coarsely and unequally serrated, 
feather-nerved ; stipules linear, subulate. A deciduous shrub. Japan. 
Height 3 ft. to 5 ft. Introduced in 1835. Flowers yellow; March to~ 
June, and often all the summer. Carpels ?. 
Variety. ; 
% K, j., 2 flore pléno (Bot. Reg., t. 587.; Bot. Mag., t. 1296. ; and our 
Jig. 490.)—Flowers double. Introduced in 1700, and in very general 
culture in British gardens. 
489. Kérria japonica. 490. Keérria j. flore plano. 
It has soft, and not very persistent, wood, clothed with a smooth greenish 
bark ; twig-like branches; leaves that are ovate-lanceolate, and serrated with 
large and unequal teeth, feather-veined, and concave on the upper surface ; 
stipules that are linear-subulate. The single-flowered variety was, until 
1835, only known through a solitary specimen received from Thunberg by Lin- 
neeus, and preserved in the herbarium of that great botanist, now in the pos- 
session of the Linnean Society. It was after examining this specimen that De 
Candolle removed it from the genus Cérchorus, and formed that of Kérria. 
The double variety is generally planted against a wall, more especially north 
of London. It is easily and rapidly propagated by its suckers, and grows freely 
in any common soil. 
