MG ENGLISH BOTANY. 



SPECIES v.— POTENTILLA TORME NTILL A. Sdvmk. 

 Plates CCCCXXX CCCCXXXI. 



Rootstoek thickened. Flowering-stems elongated, ascending, 

 decumbent or procumbent, sometimes rooting at the nodes, branched 

 towards the top. Eadical leaves generally decayed at the time of 

 flowering, ternate or digitate-quiuate ; leaflets wedge-shaped or 

 oblanceolate, pointed or somewhat obtuse at the apex, coarsely and 

 acutely serrated in the apical half; stem-leaves mostly ternate, the 

 uppermost ones sub-sessile. Stipules obovate, cleft, or the upper 

 ones elliptical and nearly entire. Flowers on long peduncles in 

 the forks of the stem or opposite the tipper leaves, arranged in 

 a very lax cyme, mostly tetramerous. The 4 outer calyx-segments 

 nearly as long as the inner ones but narrower. Petals much longer 

 than the calyx, deltoid - obovate, notched. Receptacle haii'y. 

 Achenes glabrous, reticulated or finely tuberculate. 



Sub-Species I.— Potentilla sylvestris. Nedt. 



Plate CCCCXXX.* 



Garcke, Fl. v. N. & Mifc. Deutschl. ed. vi. p. 131. 



P. Tormentilla, Sibth. Koch, Syn. Fl. Germ, et Helv. ed. ii. p. 239. Fries, Sum. Veg. 



Scand. p. 45. Gr. & Godr. Fl. de Fr. Vol. I. p. 530. 

 P. Tormentilla, var. a, Bah. Man. Brit. Bot. ed. v. p. 95. Bmlh. Handbook Brit. Fl. 



p. 131. Hook. & Am. Brit. Fl. ed. viii. p. 193. 

 Tormentilla officinalis, Sm. Eng. Bot. No. 863. 

 T. erecta, Linn. Sp. PI. p. 71G. 



Stems erect or ascending, not rooting at the nodes. Stem- 

 leaves ternate, all sessile. Flowers in a terminal corymbose cyme. 

 Achenes reticulated when dry. 



On heaths and in open woods and gravelly pastures. Very 

 common throughout the kingdom. 



England, Scotland, Ireland. Perennial. Summer and Autumn. 



Rootstock much thickened, terminating in a barren shoot, 

 which, however, is merely in the state of a bud when the flowers 

 ajipear. Stems numerous, lateral, decumbent at the base, fre- 

 quently ascending or sub-erect at the apex, fle.xuous, repeatedly 

 forked, especially towards the top. Radical leaves stalked, with 3 

 broadly wedge-sliaped divisions, of which the lateral ones are again 

 cleft, and sometimes so deeply that the leaf becomes quinate ; leaf- 



* Named 'P. cii-Tormentilla" on tlie p!ate. 



