232 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 



CYPERUS. Galingale. 



C. aristatus Rottb.— (C. inflexus 111. Fl. ed. 2.) 



Sandy shores; occasional. Pontoosuc Lake, Pittsfield; Mill River, 

 New Marlboro; Housatonic River, Sheffield. Along 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 tjrpe. Lenox; 

 Great Barrington; Sheffield. 



C. filiculinis Vahl, var. macilentus Fernald. — Dry, open soil; 

 occasional in the valley. Lee; Great Barrington; New Marlboro. 

 Common on the Sheffield sand-plain. 



C. Houghtonii Toir. — A station on exposed rocks at Bash Bish 

 Falls, Mt. Washington, is the only known station in the State. 



C. rivularis Kunth. — Low ground; occasional in the valley. 

 Pittsfield; Stockbridge; Sheffield. 



C. strigosus L. — Low shaded ground, Mt. Washington; Sheffield, 

 forma capitatus (Boeckl.) Blake.— Vid.RhodoTa, 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 Ri^•er, New Marlboro. 



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. 



