HOFFMANN: FLORA OF BERKSHIRE COUNTY. 237 
Leaves smaller and narrower (main blade 10.5 to 20 cm. long, 3 to 
5.5. cm. wide near middle); basal lobes shorter (2 to 7 cm. long), the 
lobes only rarely divergent. 
SYMPLOCARPUS. Skunk Cabbage. 
{Spalhycma 111. Fl. ed. 2.) 
S. foetidus (L.) Nutt. Skunk Cabbage. — Swamps and low 
ground; common in the valley, not noted on the plateau. Hinsdale, 
altitude 1450 feet. 
LEMNACEAE. DUCKWEED FAMILY. 
LEMNA. Duckweed. 
L. minor L. — Pools and slow streams; occasional in the valley. 
Lenox; Stockbridge; West Stockb ridge; Sheffield. 
L. trisuica L. — Pools in marshes, muddy ponds and slow streams; 
local. Washington (altitude 1450 feet) ; two localities in Stockbridge; 
Three Mile Pond, Sheffield. 
SPIRODELA. 
S. polyrhiza (L.) Schleid. — ^ Stagnant pools and ponds; occasional 
in the valley. Williamstown; Washington (altitude 1450 feet); 
Stockbridge; New Marlboro; Sheffield (Walters). 
ERIOCAULACEAE. PIPEWORT FAMILY. 
ERIOCAULON. Pipewort. 
E. septangulare Withering. Pipewort. — (E. oriicuJatum Man. 
ed. 7; vid. Rhodora, 11: 40, 1909.) 
Shallow water of ponds on gravelly bottom, or on rocky shores; 
conmion. 
XYRIDACEAE. YELLOW-EYED GRASS FAMILY. 
XYRIS. Yellow-eyed Grass. 
X. caroliniana \Valt. Yellow-eyed Grass. — Poaty borders of 
ponds; occasional. Otis; Plant in Pond, Mt. Washington; SiicJlidd. 
