HOFFMANN: FLORA OF BERKSHIRE COUNTY. 291 



L. hirta (L.) Hornem. — Open sandy soil and dry open woods; 

 frequent in the southern part of the valley. 



L. violacea (L.) Pers. — Occasional on dry hills, Sheffield and New 

 Marlboro. 



LUPINUS. Lupine. 



L. perennis L. Wild Lupine. — Locally common on the sand- 

 plain in the southern part of Sheffield. Also on Alum Hill, Sheffield. 



MEDICAGO. Medick. 



M. AEABicA Huds. — On dump at woolen mill, Pittsfield. 



M. HISPIDA Gaertn. — On dump at woolen mill, Pittsfield. 



M. LUPULiNA L. Black Medick. — Fields and roadsides; com- 

 mon. 



M. MINIMA L. — On dump at woolen mill, Pittsfield. 



M. SATIVA L. LtrcEENE; Alfalfa. — Becoming frequent along 

 roadsides and borders of fields. 



M. sp. — On dump at woolen mill, Pittsfield. 



MELILOTUS. Sweet Clovek. 



M. ALBA (Desr.). White Sweet Clovek. — Waste places and 

 along roadsides; frequent in the valley. This species was rare in 

 1900 and has since spread rapidly along the sides of roads where the 

 road scrapings offer it a congenial soil. 



M. officinalis (L.) Lam. Yellow Sweet Clovee. — Waste 

 places and roadsides; occasional in the valley. Lee; Stockbridge; 

 Great Barrington; Egremont. Becoming frequent. 



ROBINIA. Locust. 



R. Psexjdo-Acacia L. Common Locust. — Frequently naturalized, 

 forming small groves about old house-sites and along roadsides. 



R. viscosA Vent. Clammy Locust. — Occasionally established on 

 roadside banks. Stockbridge; Monterey; Egremont; Sheffield. 



TRIFOLIUM. Clover. 



T. AGEAEiuM L. Yellow oe Hop Clover. — Dry open soil, road- 

 sides, fields and wood roads; common. 



T. aevense L. Rabbit-foot Clovee. — Thin, generally sandy 

 soil; frequent, especially in the southern part of the valley. 



