HOFFMANN: FLORA OF BERKSHIRE COUNTY. 283 



var. americana Porter. Wood Strawberry. — {F. americana 

 111. Fl. ed. 2.) 

 Rich open woods and shaded ledges ; common in the valley. 



F. virginiana Duchesne. Field Strawberry. — Fields, meadows 

 and roadsides; common. 



Dewey in the Report on Herbaceous Plants of Massachusetts, p. 59, 

 says that " on the hills of Washington, a white fruited strawberry is 

 abundant in the fields. The leaves are somewhat villose." 



var. terrae-novae (Rydb.) Fernald & Wiegand. — Vid. Rhodora, 

 13: 106 (1911). 



Frequent in the same situations as the type, occurring on cold 

 flood-plains of mountain streams (Savoy), dry sandy fields (Pittsfield), 

 or swampy woods (Sheffield) . 



Differs from the type in having the pubescence of all the petioles 

 and the scapes closely appressed. 



GEUM. AvENS. 



G. canadense Jacq. White Avens. — Borders of moist woods; 

 common. 



G. rivale L. Water or Purple Avens. — Wet meadows and 

 swamps; common. 



G. strictum Ait. Yellow Avens. — Borders of woods and road- 

 side thickets; common. 



G. virginianum L. — Low ground; occasional. Lenox; Stock- 

 bridge; Sandisfield; Egremont; Sheffield; Mt. Washington (Knowl- 

 ton); swamp. West Stockbridge (Evans, Fernald and Knowlton). 



POTENTILLA. Cinquefoil; Five-fingek. 



P. argentea L. Silvery Cinquefoil. — Dry fields and pastures; 

 common. 



P. arguta Pursh. — (DrymocalKs agrimonioides 111. Fl. ed. 2.) 



Dry soil; occasional. Pittsfield; West Stockbridge; Sheffield. 



P. canadensis L. Cinquefoil; Five-finger. — Fields and open 

 woods; common. 



var. simplex (Michx.) T. &. G.— (P. simplex l\l. Fl. ed. 2.) 



Dry fields, roadsides and open woods; commoner than the type. 

 Summit of Greylock, 3500 feet. 



P. fruticosa L. Shrubby Cinquefoil; Hard-hack. — {Dasi- 

 phora fruticosa 111. Fl. ed. 2.) 



