290 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 



D. bracteosum (Michx.) DC. — Dry thickets; occasional in the 

 southern part of the valley. Great Barrington; Sheffield; Mt. 

 Washington (Burnham). 



D. canadense (L.) DC. — Dry open woods, roadsides and banks; 

 common in the southern part of the valley. Occasional elsewhere 

 (Williamstown). Altitude IGOO feet, Mt. Washington. 



D. Dillenii Darl. — Borders of dry woods, clearings and thickets; 

 frecpient in the southern part of the valley. 



D. grandiflorum (Walt.) DC. — Dry woods; common in the 

 valley. 



D. nudiflorum (L.) DC. — Dry woods; common in the valley. A 

 form with one or two leaves on the scape, occasional. 



D. paniculatum (L.) DC. — Borders of dry woods, thickets and 

 clearings; fre(iuent in the .southern part of the valley. 



D. rotundifolium (Michx.) DC— {M. Michauxii III. Fl. ed. 2.) 



Rocky woods with southern exposure; occasional in the southern 

 part of the vallc,y. West Stockbridge; Great Barrington; New 

 Marlboro; Sheffield. 



GLEDITSIA. Honey Locust. 



G. TRiACANTHOS L. HoNEY LocusT. — Rarely spreading from 

 cultivation, Egremont. 



LESPEDEZA. Bush Clover. 



Key to Lespcdeza. 



a. Flowers violot-piirple, not in close spikes or heads. 



Peduncles .slender, mostly exceeding the leaves; stems spreading. Occa- 

 sional in New Marlboro and Sheffield L. violacea. 



Peduncles mostly very short, shorter than the leaves; stems erect. Fre- 

 quent in the southern part of the valley L.fruiescens. 



a'. Flowers whitish or cream color, with u purple spot on the standard; in 

 close spikes or heads. 



Peduncles shorter than the dense subglobose heads L. capitata. 



Peduncles elongate, chiefly equalling the cylindric or subcylindric spikes. 



L. hirta. 



L. capitata Michx. — Dry fields and open sandy soil; common in 

 the southern part of the valley. 



L. frutescens (L.) Britton. — Dry open woods; frequent in the 

 southern part of the valley. 



