160 CYPERACEAE 



Common, in some of its forms, throughout the range, except the 

 pine-barrens. 



io. E. acicularis (L.) R. & S. In wet soil : Newf. to Br. Col., N. J., 

 Mo., Mex. and Cal. Also in Eu. and Asia. 



Throughout the range, more common northward and less common 

 southward than elsewhere. Rare or wanting in the pine-barrens. 



ii. E. simplex (Ell.) A. Dietr. (E. tortilis Schultes). In wet soil: 

 N. Y. to Fla. and Tex., near the coast. 



Known from near Gloucester and Cape May counties, N. J., and 

 from Rockville Centre, L. I. 



12. E. tuberculosa (Michx.) R. & S. In wet soil: Mass. to Pa., 



Fla. and Tex. near the coast. 



Conn. Not uncommon along the coast in New London Co., de- 

 creasing inland and westward. 



N. Y. On S. I. and L. I., and at West Mt. Vernon. 



N. J. Monmouth and Middlesex counties, increasing southward, 

 especially in the pine-barrens. 



Pa. Willow Gove, Montgomery Co. 



Tertiary, common: Cretaceous, less common: Older Formations, 



rare and scattered near the coasts. 179-220 days. About sea level. 



13. E. Torreyana Boeckl. (E. microcarpa filiform is Torr.). In wet 



sandy soil: Conn, to Fla. and Tex. mostly near the coast. 



Conn. Rare near Voluntown. 



N. J. In the pine-barrens and in Cape May Co. 



Tertiary, common on Beacon Hill, rare elsewhere: Cretaceous, 

 rare or wanting: Older Formations, very rare and perhaps only 

 adventive. 179-220 days. About sea level. 



14. E. melanocarpa Torr. In wet sandy soil: Mass. to Fla., near 



the coast. 



N. Y. Rare at Wading River, L. I., and on S. I. 



N. J. Rare in Burlington and Cape May counties; not in the pine- 

 barrens. 

 A rare and local species in our range. 



15. E. tricostata Torr. In wet soil: Mass. to southern N. Y. and 



Fla. 



N. Y. Rare at Wading River and at Ronkonkoma, L. I., unknown 

 elsewhere. 



