POACEAE 1 35 



53. Eleusine Gaertn. 



I. E. indica (L.) Gaertn. In waste places and fields: nearly 

 throughout N. Am. Native of Europe, or Asia. 

 Common as a weed in most parts of our range. 



54. Dactyloctenium Willd. 



1. D. aegypticum (L.) Willd. In waste places and cultivated 

 grounds: southern N. Y., Pa. and Va. to 111., Cal., south to 

 Fla. and Mex. Naturalized from Asia or Africa. 

 Rare as a weed in our area. 



55. Phragmites Trin. 



1. P. Phragmites (L.) Karst. In swamps and wet places: nearly 

 throughout N. Am. Also in Eu. and Asia. 

 Throughout the range, except the pine-barrens. 



56. Tridens R. & S. 



I. T. flava (L.) Hitchc. In fields: Mass. and N. Y. to Kan., 

 south to Fla. and Tex. 



Conn. Rare in New London Co., along the coast and the valley 



of the Thames, increasing westward along the coast, and inland 



as at Kent and Southington. 

 N. Y. L. I., S. I. and up the Hudson to Westchester Co., unknown 



northward. 

 N. J. Rare and local in the north, increasing southward, but not 



in the pine-barrens. 

 Pa. Luzerne, Northampton, Bucks, Philadelphia, Delaware and 



Chester counties. 



Tertiary, wanting on Beacon Hill, scattered elsewhere: Cretaceous 

 common: Older Formations, scattered, usually near the coast. 

 128-220 days. Sea level-1,000 ft. 



57. Triplasis Beauv. 



1. T. purpurea (Walt.) Chapm. In sand, especially on the sea 

 beaches: Me. to Fla. and Tex. and along the Great Lakes. 



Common along the sea beaches and inland at Lisbon, Conn., and 

 throughout the coastal plain in N. J.; reported as formerly along 

 the Harlem River. 



