fiOSA'CEJE. POTENT1 LLA. 



747 



those of yslia alba; R. cordifMius D. Don appears to be the same species, or perhaps a variety. 

 There is a plant in the Horticultural Society's Garden. 



K. acHHiinri/H* Smith, R. ftetulinus D. Don, is a native of Nepal, with 

 leaves like those of the birch or hornbeam. 



K. rfjtctus Ker J},,t. Reg., t. 4iil. ; and' our Jig. 466. \ R. moluccanus Ait., 

 but not of Lin., is a straggling .shrub, a native of China, from which country 

 it was brought to the Kew Garden in 1S17. 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 apj>ears a very distinct species. 



R. rosiffiifins Smith .Don's Mill., 'J. p. /i'J!i. ; H,,t. ('//., t. l/JN.) is a native 

 of the Mauritius, with pinnate leaves. It is generally kept in the green- 

 house. 



U. r. 2 MTMirfaffStaM (Hot. Mag., t. 1783. ; and our Jig. 4<>/ .), A', sim'nsis , ~- } 

 Jlort., R. Commerson/Vz Poir., has double while flowers. This beautiful I- i, 

 variety is rather tender ; but a plant stootl out against the wall in the Horti- /^ 

 cultural Soc-iety's Garden for two years. 



GENUS X. 



L&J 



POTENTTLLA L. THE POTENTILLA, or SHRUBBY CTNQUEFOIL. 

 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.fruticosa, P.f. tenuiloba 

 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. palustre (P. Comarum Scop.), a well-known British 

 plant, having somewhat ligneous shoots. It grows to the height of lift. 

 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. FRUTICO V SA L. The shrubby Potentilla, or Cinquefoil. 



Identification. Lin. Sp., 709. ; Dec. Prod., 2. p. 579. ; Don's Mill, 2. p. 560. ; Nestl. Pot; 



Pot. ; Smith's Eng. Flora, 2. p. 416. 

 Engravings. Eng. Bot., t. 88. ; Nestl. Pot, 30. 1. 1. j and our Jig. 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. 

 Hracteas linear-lanceolate, in- 

 distinctl pctioled. Corolla 



Lehm. 



468 



longer than the calyx. Receptacle very hairy. (Dec. Prod., ii. 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. 



I'arii-lifs, according to Scringe, in Dec. I'xxl. 



& P. /. 2 dahiirica Ser. P. dahurica \r.v//. Pot., ;>1. t. 1. ; llort. Brit., No. 2914.3. ; P. fruti- 

 cbsa /3 Lc/tm. Pot., 3U. Glabrous. Lobes of the leaves 3 5, pinnately cut. Sepals 



