298 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
RHAMNACEAE. BUCKTHORN FAMILY. 
CEANOTHUS. Red-root. 
C. americanus L. Nkw Jersey Tea. — Sandy soil, borders of 
dry woods and roadsides; frequent in the southern part of the valley. 
RHAMNUS. Buckthorn. 
R. alnifolia L'Hct. — Cool swamps; frequent in the valley. 
R. CATHAiiTiCA L. CoMMON BucKTHORN. — 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. Woodbixe; Virginia Creeper. 
{Parthenocissus 111. Fl. ed. 2.) 
P. quinquefolia (L.) Greene. — (P. quinquefoUa 111. Fl. ed. 2 in 
part.) 
Rocky or swampy w'oods, 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. Summer Grape. — Thickets and hillsides; 
occasional in the valleys. Deerfield River, Florida; Adams (Knowl- 
ton and Bean); Great Barrington; Sheffield. 
V. bicolor Le Conte. Summer 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 or Frost Grape. — Banks of streams 
and thickets; common. 
