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. LrpiNE. 



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. ARABICA Huds. — On dump at woolen mill, Pittsfield. 



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



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

 mon. 



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



M. sativa L. Lucerne; Alfalfa. — Becoming frequent along 

 roadsides and borders of fields. 



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



MELILOTUS. Sweet Clover. 



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

 along roadsides; frequent in the \alley. 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 Clover. — Waste 

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

 Great Barrington; Egremont. Becoming frequent. 



ROBINIA. Loctf.sT. 



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

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



R. viscosA Vent. Clam.my Locust. — Occasionally established on 

 roadside banks. Stockbridge; Monterey; Egremont; Sheffield. 



TRIFOLIUM. Ci-oVKK. 



T. agrarium L. Yellow ok Hop Clover. — Dry open soil, road- 

 sides, fields and wood roads; commoti. 



T. akvense L. Rahhit-foot Clovku. — Thin, generally sundy 

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



