CYPERACEAE I 67 



12. S. robustus Pursh (S. maritimas macro stachyns Michx.). In 



salt marshes: N. S. to Tex. 



Common throughout the coastal marshes. 



13. S. fluviatilis (Torr.) A. Gray. In shallow water along lakes 



and streams: Que. to Minn., N. J., Neb. and Kan. 



Conn. Rare along the lower part of the Connecticut River, 



unknown elsewhere. 

 N. Y. Known only from Pine Plains, Dutchess Co., and on an 



island in the Hudson River opposite New Baltimore, Greene Co. 

 N. J. Along the Delaware and its affluents in Camden, Gloucester 



and Salem counties. 

 Pa. Tinicum, Chester Co., and Essington, Delaware Co. 



14. S. novae-angliae Britton. In fresh and brackish marshes: 



Mass. to N. Y. 



Known in our area only on the coast of Conn, from Milford 

 westward, and near Spuyten Duyvil Creek, and at Smith town, 

 L. I. 



15. S. sylvaticus L. In swamps: Me. to Ga. and Mich. Also in 



Eu. and Asia. 



Conn. Throughout. 



N. Y. S. I. 



N. J. Essex and Hunterdon counties. 



Pa. Philadelphia Co., northward. 



16. S. atrovirens Muhl. (S. georgianus Harper). In swamps: 



N. S. to Sask., south to Ga. and La. 



Throughout the range, except in the pine-barrens and the region 

 east of them, there rare and apparently adventive. 



17. S. microcarpus Presl (S. rubrotinctus Fernald). In swamps 



and wet woods: Newf. to Alaska south to Conn., northern 



N. Y., Minn., Nev. and Cal. 



Conn. Throughout. 



N. Y. Near Riverdale, and at Smithtown, L. I. 



Pa. Reported from Bucks Co. 



18. S. polyphyllus Vahl. In swamps, wet woods and meadows: 



Mass. to Minn., south to Ga., Tenn. and Ark. 

 Conn. Throughout, but not common. 



N. Y. Rare on the north side of L. I. and reported from the south 

 side; S. I., thence increasing northward. 



