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. xA.lso 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. LUPULINA 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 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 Clover. — Waste 
places and roadsides; occasional in the valley. Lee; Stockbridge; 
Great Barrington; Egremont. Becoming frequent. 
ROBINIA. Locust. 
R. Pseudo-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. Ci.ovKU. 
T. AGRARiuM L. Yellow or Hop Clover. — Dry open soil, road- 
sides, fields and wood roads; common. 
T. arvense L. Rabbit-foot Clover. — Thin, generally sandy 
soil; fre(iu(>nt, especially in tlic southern part of the valley. 
