24. ROSACES. 57 



lanceolate, deeply serrated leaflets. Fl. dingy purple, in a loose 

 corymb. Stamens and styles purple. Carpels numerous, on a 

 swollen spongy receptacle. 



' Common. In marshes and bogs. (B) P. 67. Fossil marsh; Cathkin hills; 

 Frankfield Loch, &c. 



7. PoTENTfLLA. CinquefoiL 



A. Flowers yellow. Leaves pinnate. 



1. P. ANSERfNA, L. Silver- Weed. Rhizome ending in a tuft 

 of leaves, sending out lateral runners, rooting at the nodes, form- 

 ing new plants. Le. interruptedly pinnate, leaflets sessile, deeply 

 serrate, with shining white silky hairs beneath, Fl. solitary, on 

 long peduncles. 



Common. By roadsides everywhere. (B) P. 67. 



B. Flowers yellow. Leaves quinate. 



2. P. KEPT AN s, L. Creeping-Cinquefoil. Rhizome slender, 

 sending out stems or lateral runners, rooting at the nodes. Le. 

 on long stalks, with 5 obovate-cuneiform leaflets, serrated above, 

 sometimes nearly to the base. Fl. axillary, on long peduncles, 

 large, with 5 petals. Carpels rough, with small points. 



Not common. Banks and way-sides. (E) P. 69. "Banks of Clyde near 

 Dalbeth," Hopk. On the south side, now opposite Dalbeth; Bogle's hole, near 

 Hamilton, Wishaw, &c. 



3. P. TORMENTILLA, Sibth. Tormentil. Rhizome thickened, 

 tough, woody. Stems numerous, lateral, decumbent at the base, 

 sometimes sending out filiform runners. Radical le. , stalked with 

 3 broadly wedge-shaped divisions, lateral ones deeply cleft, stem 

 le. all sessile, leaflets narrow, acute, all deeply serrated on the 

 upper half. Fl. on long peduncles, with 4, seldom 5, petals. 

 Carpels wrinkled. 



Very common. On heathy pastures and moors. (B) P. 68. Possil marsh; 

 Paisley Canal bank, <fec. 



Var. reptans. Has the stems prostrate, generally rooting at the 

 nodes. Le. ternate or quinate, mostly stalked, flowers larger 

 than in the common form; often with stems 12 18 in. long. 



Frequent. On hedge banks. Possil road, near Lambhill bridge; nearCambus- 

 lang; Gourock; Cumbrae, &c. 



C. Flowers white. Leaves ternate. 



4. P. FRAGARIASTRUM, Ehr. Barren- Strawberry. Rhizome 

 woody, branched, stems procumbent. Le. ternate, leaflets round- 

 ish-ovate, serrate, silky, especially beneath, resembling the straw- 

 berry. Fl. few, white. Pet. obcordate, as long as, or slightly 

 longer than the cal. Carp, downy at the base. 



Very common. Woods and hedge banks. (B) P. 2 5. Kelvin woods; banks 

 of Clyde at Carmyle, &c. 



