228 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
C. Oederi Rctz, var. pumila (Cosson & Germain) Fernald. — 
Margins of ponds and roadside ditches; frequent in the valley. 
C. oligocarpa Schknhr. — Rich wood.s; rare. Stockbridge; New 
Marlboro. 
C. pallescens L.-- Meadows and open woods; common. 
C. paucifiora Lightf. — Peat bogs; local. Ward and Lost Ponds, 
Becket; ^Yolf Swamp, Sandisfield. 
C. paupercula Michx. — Sandisfield (^Yalters). 
v^r. irrigua (Wahlenb.) Fernald. — Sphagnum swamps; local. 
Pittsfield; Becket. 
var. pallens Fernald. — Shaded sphagnum swamps; local. Wash- 
ington (Boott); Pittsfield; New Marlboro. 
C. pedunculata Muhl. — Open woods; common, particularly in 
rocky woods. 
C. pennsylvanica Lam. — Dry open woods and clearings; com- 
mon. 
var. lucorum (Willd.) Fernald. — Occasional. Dry woods. New 
Marlboro ; rocky woods, West Stockbridge ; dry woods, Mt. Washing- 
ton (Knowlton); dry woods, Sheffield (Bean and Fernald). 
C. plantaginea Lam. — Rich woods; frequent in the valley and on 
the lower slopes of the mountains. 
Culms 6.5 cm. high, Stockbridge. 
C. platyphylla Carey. — Rich woods; common in the valley. 
C. polygama Schkuhr. — (C Buxbawjiii III. Fl. ed. 2.) 
Joyner's Marsh, Egremont. 
C. prasina Wahlenb. — Wet spots in woods; frequent in the valley 
and on the lower slopes of the mountains. 
C. projecta Mackenzie. — (C. tribuloides, var. reducta Man. ed. 7; 
rid. Bull Torr. Bot. Club, 35: 264, 1908.) 
Borders of swamps and wet woods ; frequent in the valley, common 
on the plateau. 
C. Pseudo-Cyperus L. — -Border of Spectacle Pond, Sandisfield; 
Sheffield (Walters). 
C. pubescens Muhl. — Rich woods, in damp glades and alluvial 
thickets; frequent. 
C. retrorsa Schwein. — Borders of ponds and streams, wet spots 
in meadows; common in the valley. 
var. Hartii (Dewey) Gray. — River alluvium, Sheffield (Churchill). 
var. Robinsonii Fernald. — Shore of Richmond Lake, Richmond. 
