138 THE ROSE FAMILY. [Potentitta. 



P. salisburgensis, Hasnke, and maculata, Pourr., which were published in 

 the same year, and P. rubens, Vill., the earliest of all.] 



6. P. Sibbaldi, Haller f. (fig. 318). Sibbaldia.The perennial 

 stock forms a short, dense, spreading tuft. Leafstalk seldom above 6 

 lines long, with 3 obovate or wedge-shaped leaflets, 3 -toothed at the 

 end, green, and more or less hairy on both sides. Flower-stems to 1$ 

 inches long, almost leafless, bearing a cyme of small flowers, of which 

 the green calyxes are the most conspicuous, the petals being very small 

 and of a pale yellow, or occasionally wanting. The carpels are 5 to 7, 

 rarely more. The lobes of the calyx often close over the carpels after 

 flowering, but the latter are not enclosed within the tube as in Alche- 

 milla. (Sibbaldia procumbens, Linn.) 



In the mountains of northern and Arctic Europe, Asia, and America, 

 or at greater elevations, in the higher ranges of central Europe and 

 Asia. Frequent in the Scotch Highlands, constituting in some places 

 a considerable portion of the greensward, but unknown in England or 

 Ireland. Fl. summer. 



7. P. fruticosa, Linn. (fig. 319). Shrubby P. Differs from all other 

 European species by the stem, the lower portion of which becomes 

 woody, forming an erect or spreading shrub or undershrub often 

 very low, but sometimes attaining 2 feet in height ; the short flower- 

 ing branches die down as in other Potentillas. Stipules narrow and 

 thin. Leaflets usually 5, narrow and entire ; the three upper ones 

 often shortly connected at the base ; the two lower inserted at some 

 distance from them, so as to form a pinnate rather than a digitate leaf. 

 Peduncles terminal or opposed to the leaves, each with a single rather 

 large yellow flower. 



In bushy or stony places, chiefly in mountain districts, widely diffused 

 over Europe, central and Russian Asia, and North America, but not 

 generally common. In Britain, only in a few localities in the north of 

 England, and in Clare and Galway in Ireland. Fl. summer. 



8. P. anserina, Linn. (fig. 320). Silver-weed. Stock tufted, with 

 long creeping runners rooting at the nodes, as in P. reptans. Leaves 

 pinnate, with numerous oblong, deeply toothed leaflets, green or some- 

 what silky on the upper side, of a shining silvery white underneath 

 from the silky down with which they are covered. Peduncles long, 

 solitary at the rooting nodes, bearing a single rather large yellow 

 flower. 



Common on roadsides, in stony pastures, and waste places throughout 

 Europe, Russian and central Asia, and a great part of North America, 

 extending to the Arctic regions, and reappearing in the southern hemi- 

 sphere. Abundant in Britain. Fl. summer. 



9. P. rupestris, Linn. (fig. 321). RocTc P. Stock perennial, some- 

 times forming a very short, woody stem, the annual flower-stems 6 to 

 10 inches high. Leaves chiefly radical, pinnate ; the common stalk 

 rather long ; the leaflets 5 or rarely 7, ovate, toothed, green, and some- 

 what glutinous. The stem-leaves few and smaller, usually with only 3 

 leaflets. Flowers few, rather large, of a pure white, forming a loose, 

 irregular corymb. 



In clefts of rocks, in limestone districts, in the mountain-ranges of 

 central and southern Europe, and across the whole continent of Asia, 

 extending northwards into southern Sweden. In Britain, only in one 



