298 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 



RHAMNACEAE. BUCKTHORN FAMILY. 

 CEANOTHUS. Red-root. 



C. americanus L. New Jebsey Tea. — Sandy soil, borders of 

 dry woods and roadsides; frequent in the southern part of the valley. 



RHAMNUS. Buckthorn. 



R. ainifolia L'Her. — Cool swamps; frequent in the valley. 



R. CATHAKTiCA L. CoMMON BucKTHOEN. — Roadside thickets; 

 frequently naturalized. Generally only a single tree is found, but the 

 species is common for nearly a mile along the roadside opposite Round 

 Pond, Great Barrington. 



VITACEAE. VINE FAMILY. 



PSEDERA. Woodbine; Virginia Creeper. 



{Parthenodssus 111. FI. ed. 2.) 



P. quinquefolia (L.) Greene.— (P. quinquefolia 111. Fl. ed. 2 in 

 part.) 



Rocky or swampy woods, thickets and borders of streams; common. 

 Altitude 1800 feet, Washington. 



var. hirsuta (Donn) Rehder. — Rocky woods ; banks of streams ; 

 common. 



P. vitacea (Knerr) Greene. — (P. quinquefolia 111. Fl. ed. 2 in part.) 



Alluvial thickets; frequent. 



VITIS. Grape. 



V. aestivalis Michx. Summee Grape. — Thickets and hillsides; 

 occasional in the valleys. Deerfield River, Florida; Adams (Knowl- 

 ton and Bean); Great Barrington; Sheffield. 



V. bicolor Le Conte. Summeb Grape. — Rocky open woods and 

 river-banks; frequent in the southern part of the valley. 



V. labrusca L. Northern Fox Grape. — Occasional and in- 

 digenous along the Deerfield River, Florida, and the Farmington 

 River, Sandisfield. Here and there escaping to roadsides elsewhere. 



V. vulpina L. River-bank oe Frost Grape. — Banks of streams 

 and thickets; common. 



