CHAP. XLII. ROSA‘CER. POTENTILLA. 74.7 
those of Tilia alba; 2. cordifdlius D, Don appears to be the same species, or perhaps a variety. 
There is a plant in the Horticultural Society’s Garden. 
R. acumindtus Smith, R. betilinus D. Don, is a native of Nepal, with 
leaves like those of the birch or hornbeam. 
R. vefléxus Ker (Bot. Reg., t. 461. ; and* our jig. 466.), 2. moluccanus A?zt., 
but not of Lin., is a straggling shrub, a native of China, from which country 
it was brought to the Kew Garden in 1817. ‘The leaves are oblong-cordate, 
3—5-lobed, densely clothed with tomentum beneath, as are the stems and 
flower buds, and the flowers are white. It appears a very distinct species. 
R. rosefdlius Smith (Don’s Miill., 2. p. 529.; Bot. Cab., t.158.) is a native 
“us the Mauritius, with pinnate leaves. It is generally kept in the green- : 
ouse. TAS 
R. r. 2 coronarius Sims (Bot. Mag., t. 1783. ; and our fig. 467.), A. sinénsis 77 
Hort., R.Commersdnia Poir., has double white flowers. This beautiful 
variety is rather tender ; but a plant stood out against the wall in the Horti- 
cultural Society’s Garden for two years. 

Genus X. 
POTENTILLA LZ. Tuer Porentitua, or SHRUBBY CINQUEFOIL. 
Lin. Syst. Icosandria Polygynia. 
Identification. Lin. Gen., No. 865.; Nestl. Pot. Diss., 4to. ; Lehm. Pot. Diss., 4to.; Dec. Prod., 2. 
p. 571. ; Don’s Mill., 2. p. 549. 
Derivation. From potens, powerful; in allusion to the supposed medicinal qualities of some 
species. 
Description, §c. The ligneous species are low shrubs with pinnatifid leaves, 
natives of Europe and America, and of easy culture in a dry soil. They are 
propagated by seeds or cuttings ; and, except the common species, P. fruti- 
cosa, are not much in cultivation. Of the varieties of P.fruticdsa, P.f. tenufloba 
Ser. seems the most showy. Those who wish to include as many species 
as they can in their arboretum, may subjoin to the genus Potentilla the 
genus Comarum; C. palistre (P. Comarum Scop.), a well-known British 
plant, having somewhat ligneous shoots. It grows to the height of 14 ft. 
in marshy soils; has very handsome foliage, and flowers of a deep dingy 
purple; and may prove useful in particular situations on the margins of 
ponds. 
# 1. P.rrutico’sa L. The shrubby Potentilla, or Cinquefoil. 
Identification. Lin. Sp., 709.; Dec. Prod., 2. p. 579.; Don’s Mill., 2. p.560.; Nestl. Pot.; Lehm. 
Pot. ; Smith’s Eng. Flora, 2. p. 416. 
Engravings. Eng. Bot., t.88.; Nestl. Pot., 30. t.1.; and our fig. 468, 
Spec. Char., &c. Stem shrubby. 
Leaves pinnately cut, hairy; the 
lobes oblong, lanceolate, entire, 
approximate, of nearly the same 
colour on both surfaces. Sti- 
pules lanceolate, membrana- 
ceous, acute. Inflorescence 
rather corymbose. Flowers * 
yellow. Sepals pilose, lanceo- 
late, acute, broad at the base. 
Bracteas linear-lanceolate, in- 
distinctly petioled. Corolla 
longer than the calyx. Receptacle very hairy. (Dec. Prod., i. p.579.) A 
native of England, Germany, the Pyrenees, and other places. Found in 
different parts in Middleton, Teesdale, in England; and Rock Forest, 
Clare, in Ireland; flowering in June. This species is the only one common 
in British nurseries. 
Varieties, according to Seringe, in Dec. Prod. 
% P. f. 2 dahirica Ser. P. dahurica Nesé#. Pot., 31. t. 1.; Hort. Brit., No.29143.; P. fruti- 
cdsa 8 Lehm. Pot., 32.— Glabrous. Lobes of the leaves 3—5, pinnately cut. Sepals 

