142 ENGLISH BOTANY. 
nearly flat, dry, rarely conical and spongy, not separating from the 
calyx. Achenes dry, with the styles deciduous. : 
Herbs, mostly perennial, rarely shrubs, with ternate, digitate, or 
pinnate leaves. Stipules of the lower leaves adnate to the petioles. 
Flowers yellow, white, or more rarely red or purple, solitary or 
in terminal cymes. 
The name of this genus comes from the word potens, powerful, from the supposed 
medical qualities of some of the species. 
Sus-Genus I.—SIBBALDIA. Zinn. 
Petals strap-shaped and entire, or none. Stamens. definite, 5 
to 10. Receptacle concave, dry. Carpels 5 to 10. 
SPECIES I—POTENTILLA SIBBALDIA. 
Puate CCCCXXVI. 
Sibbaldia procumbens, Linn. Bab. Man. Brit. Bot. ed. v. p. 94. Benth. Handbook 
Brit. Fl. p. 195. Hook. & Arn. Brit. Fl. ed. viii. p. 132. Sm. Eng. Bot. No. 897. 
Koch, Syn. Fl. Germ. et Helv. ed. ii. p. 244. Fries, Sum. Veg. Scand. p. 45.. Gr. & 
Godr. Fl. de Fr. Vol. I. p. 521. 
Rootstock branched, each division terminating in a barren leafy 
tuft, Flowering-stems lateral. Radical leaves ternate; leaflets 
obovate or oblong, truncate and 3-toothed at the apex, entire on 
the margins. Flowers few, in terminal compact corymbose cymes, 
frequently with 1 or more small cymes beneath, so as to form a 
very short panicle. Petals linear, sometimes absent. Stamens 
commonly 5 to 7. 
On rocky débris and on the rounded summits of mountains ; 
common in the Scotch Highlands, extending from Peeblesshire and 
Stirlingshire to Shetland. 
Scotland. Perennial. Summer. 
Rootstock woody, tortuous, branched, clothed with brown scales, 
the remains of the stipules of the leaves of preceding years. Leaves 
in a tuft terminating the rootstock, on petioles 1 to 3 inches long. 
Leaflets $ inch to 1 inch long, the central one shortly stalked; 
apex nearly as broad as the broadest part of the leaflet, truncate, with 
3, rarely 4 or 5, large nearly equal teeth. Flowering-stems from 
the axils of the leaves of the preceding year (and consequently 
from below the tuft of barren leaves), leafless, or with one or more 
ternate leaves like those of the barren tuft, or with the leaflets 
