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Cyperus Michauxianus, Schultes. 
This species is frequently found near Boston, and undoubtedly 
grows within the county limits. 
Cyperus Grayii, Torr. 
Plum Island (Proc. E. I., Vol. I, p. 278) ; same station, 1878 (W. P. 
Conant). 
Cyperus filiculmis, Vahl. 
Dry sandy soil. Common. 
Cyperus fuscus, ZL. 
Near Revere beach, 1877 (Herbert A. Young). This species is also 
found in New Jersey. (Adv. from So. Eu.) 
Dulichium spathaceum, Pers. 
Swamps and borders of ponds. Common. 
Eleocharis Robbinsii, Oakes. 
Sluice pond, Lynn (C. E. Faxon). Probably not uncommon. 
Eleocharis tuberculosa, R. Br. 
Manchester (Oakes); Danvers (J. H. Sears). Rare. 
Eleocharis obtusa, Schulies. ; 
Wet places and borders of ponds. 
Eleocharis olivacea, Torr. 
. Long pond, Saugus (Herbert A. Young). 
Eleocharis palustris, R. Br. : 
Wenham and Chebacco ponds, Crane pond, West Newbury, etc. 
Eleocharis tenuis, Schultes. 
Meadows, ponds, etc. Very common and variable. 
Eleocharis acicularis, f&. Br. 
Wet places. Common. 
Eleocharis pygmea, Torr. 
Salem Great Pastures, near Atlantic Car Works; near Coflin’s 
beach, West Gloucester. Scarce. 
Eleocharis Engelmanni, Steudel. . 
Sluice pond, Lynn, Sept. 1879 (Herbert A. Young). 
Var. detonsa, Gray. 
Found at Winter pond, Winchester, 1878 (E. H. Hitchings). 
Scirpus planifolius, Muhl. 
Danvers, 1878 (J. H. Sears). 
Scirpus subterminalis, Torr. 
Crane pond, West Newbury; Chebacco pond; ‘‘ Wenham, Pleasant 
pond, 1823” (memo. Dr. Chas. Pickering). 
Scirpus pungens, Vahl. 
Found near both fresh and salt water. Common. 
Scirpus Torreyi, Olney. ; 
Lawrence, along the shores of the Merrimac, above the dam. 

