HOFFMANN: FLORA OF BERKSHIRE COUNTY. 295 
frequent. Common on limestpne hills in Sheffield and New Marl- 
boro. 
E. maculata L. — (C maculata 111. Fl. ed. 2.) 
Dry open ground, roadsides, railroad tracks and cultivated ground; 
frequent. 
E. Preslii Guss.— (C. Preslii 111. Fl. ed. 2.) 
Waste ground, Pittsfield. 
CALLITRICHACEAE. 
CALLITRICHE. Water Starwort. 
C. palustris L. — Pools and borders of brooks, muddy shores; 
frequent. 
ANACARDIACEAE. 
RHUS. Sumach. 
{Toxicodendron 111. Fl. ed. 2 in part.) 
R. copallina L. Dwarf Sumach. — Dry sandy soil and rocky 
hills ; frequent in the southern part of the valley. 
R. glabra L. Smooth Sumach. — Dry sandy soil, open rocky 
woods and pastures; common in the southern part of the valley. 
R. Toxicodendron L. Poison Ivy; Poison Oak. — {T. Toxico- 
dendron 111. Fl. ed. 2.) 
Wet woods, roadsides, railroad embankments and rocky summits; 
frequent. Altitude 1800 feet (Washington). 
var. radicans (L.) Torr. — ( T. radicans 111. Fl. ed. 2.) 
Damp woods and borders of streams; occasional in the valley. 
Williamstown; Richmond; Stockbridge; Lee; Sandisfield; New 
Marlboro. 
R. typhina L. Staghorn Sumach. — (R. hirta 111. Fl. ed. 2.) 
Borders of woods, rocky hills, roadsides and pastures; common. 
R. Vernix L. Poison Sumach; Poison Dogwood. — {T. J'crnix 
111. Fl. ed. 2.) 
Swamps and low ground; occasional in the soutlu-ni i)art of the 
valley. 
AC^riKOLIACKAi:. HOLLY FAMILY. 
ILEX. Holly. 
I. monticola Gray, var. mollis (Gray) Britton. — (/. utoutana 111. 
Fl. ed. 2.) 
