232 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
CYPERUS. Oalinoale. 
C. aristatus Rottb.— (C. inflexus III. Fl. erl. 2.) 
Sandy shores; occasional. Pontoosuc Lake, Pittsfield ; Mill River, 
New Marlboro; Ilousatonic River, Sheffield. Alonj? railroad track, 
Lee. 
C. diandrus Torr. — Borders of lakes, and low ground; frequent. 
C. esculentus L. — Sandy shores; occasional along the Housa- 
tonic River. Great Barrington; Sheffield. As a weed in cultivated 
ground, Lenox. 
var. leptostachyus Boeckl. — Occasional with the type. Lenox; 
Great Barrington; Sheffield. 
C. filiculmis Vahl, var. macilentus Fcrnald. — Dry, open soil; 
occasional in the valley. Lee; Great Barrington; New jMarlboro. 
Common on the Sheffield sand-plain. 
C. Houghtonii Torr. — A station on exposed rocks at Bash Bish 
Falls, ]\It. Washington, is the only known station in the State. 
C. rivularis Kunth. — Low ground; occasional in the valley. 
Pittsfield; Stocklmdge; Sheffield. 
C. strigosus L. — Low shaded ground, Mt. Washington; Sheffield. 
forma capitatus (Boeckl.) Blake. — Vid. Rhodora, 15 : 200 (1913) . 
Sandy or muddy shores of lakes and streams; frequent. 
var. compositus Britton. — Sandy or muddy shores, and in low 
ground; frequent in the valley. 
var. robustior Kunth. — Low ground; occasional. Great Barring- 
ton; Sheffield. 
DULICHIUM. 
D. arundinaceum (L.) Britton. — Borders of ponds and marshes; 
common. 
ELEOCHARIS. Spike-rush. 
E. acicularis (L.) R. & S. — Shallow water and muddy shores; 
common. 
E. intermedia (Muhl.) Schultes. — Muddy shores; occasional. 
Pontoosuc Lake, Pittsfield; Egremont; Mill River, New ^larlboro. 
E. obtusa (Willd.) Schultes. — Roadside ditches, borders of ponds 
and streams, open muddy spots in marshes; common. 
E. olivacea Torr. — Muddy spots in marshes; occasional in the 
valley. Lenox; Egremont; Sheffield. 
