742 POTENTILLA. LcLASS XII. ORDER in. 



Habitat. — Dry pastures ; Sufifolk, Carabridgesliire, on St. Vincent's 

 Rocks, Bristol, the North of England, Wales, and Scotland. 

 Perennial ; flowering in April and May. 



This is an extremely variable plant in size and hairiness ; sometimes 

 it is nearly smooth, or the leaves are smooth above, with a fringe of 

 long silky or bristly hairs on the margins, and the ribs on the under 

 side, or they are tomentose, as well as fringed with longer hairs, which 

 ■we have from the South of France, and is the variety ^. cinerea, Ser. 

 MSS. De Cand. Prod. 2. p. 576, the P. cinerea, Chaix. The leaflets 

 vary in being more or less deeply serrated, and the serratures are 

 rounded or acute, the terminal one is alv\ays shorter than the other, 

 two or three on each side of it. The stipules, though usually linear 

 on the radical leaves, and ovate above, are not unfrequently found 

 ovate on the radical leaves, as well as those of the stem, and speci- 

 mens frequently occur intermediate between these extremes : hence 

 arises the difiiculty to know where the characters of one species termi- 

 nate and another begins ; for between the extremes of this species and 

 the characters of the following there appears so little difi"erence that it 

 would seem better to unite them into one, and this appears to be the 

 opinion of Sir W. J. Hooker and Mr. W. Wilson. The Continental 

 Botanists, however, not only make them difi'erent species, but they 

 enumerate many varieties under each. 



6. P. salis'hurgensis, Haeuk. (Fig. 842.) Orange Alpine Cinque-foil. 

 *' Stem prostrate, sometimes rooting, ascending, pubescent ; radical 

 leaves quinate ; leaflets obovate, smooth, the margins and veins on the 

 under side fringed with spreading hairs, the upper part deeply serrated, 

 the teeth long, three on each side the nearly equal terminal one; 

 stipules all ovate, the carpels slightly rugose." — Koch. 



Koch. Flora GermanicsB et Helveticse, p. 216. — P. awrea, Linn. — 

 English Botany, t. 561.— De Cand. Prod. 2. p. 576. — P.alpestris, 

 Hall, fil, — English Flora, vol. ii. p. 419. — Hooker, British Flora, ed. 

 4. vol. i. p. 206. — Lindley, Synopsis, p. 96. 



Habitat. — Mountains in the North of England, Wales, and the 

 Breadalbane and Clove Mountains, Scotland. 



Perennial ; flowering in June and July. 



7. P. opa'ca, Linn. (Fig. 843.) Saw-leaved hairy Cinque-foil. 

 Stems hairy, recumbent, often rooting ; radical leaves petiolate, with 

 seven linear wedge-shaped leaflets, deeply serrated to the base, the 

 terminal tooth much the shortest; stem leaves sessile, or nearly so, 

 with three leaflets ; stipules oblong, lanceolate ; carpels more or less 

 rugose. 



English Botany, t. 2449.— English Flora, vol. ii. p. 423.— Hooker, 

 Briti.sh Flora, ed. 4. vol. i. p. 207. — Lindley, Synopsis, p. 97. 



Root long, woody, branched, almost black, bearing numerous stems, 

 prostrate, and sometimes rooting, becoming erect, round, branched. 



