140 POACEAE 



1. P. annua L. In waste and cultivated places: nearly through- 



out N. Am. Native of Eu. and Asia. 



Common as a weed in most parts of our range. 



2. P. autumnalis Muhl. In woods: N. J. to Mo., south to Fla. 



and Tex. 



N. J. Rare and local near the Palisades, Bergen Co. 



Pa. Scattered in Monroe, Lackawanna, Bucks and Philadelphia 



counties. 



Apparently increasing westward with us. 



3. P. debilis Torr. In woods: Que. and Ont. to R. I., Pa., 111. 



and Iowa. 



Conn. Rare and scattered, increasing northwestward. 



N. Y. Recorded from Westchester Co., increasing northward. 



N.J. Sussex Co. 



Pa. Monroe and Luzerne counties. 



Tertiary, o: Cretaceous, o: Older Formations, increasing north- 

 ward. Not south of the moraine. 117-189 days. Sea level- 

 3,36S ft. 



4. P. trivialis L. In meadows and waste places: Newf. to Ont., 



S. Car. and La. Naturalized from Europe. 

 Locally common as a weed. 



5. P. alsodes A. Gray. In woods and thickets: Que. to Minn. 



south to N. Car. and Tenn. 



Conn. Rare and local along the coast, increasing northwestward. 



N. Y. Pine Plains, Dutchess Co. and in the Catskills; rare. 



N. J. Warren, Morris and Sussex counties; reported from but 



doubtfully in Monmouth Co. 



Tertiary, o: Cretaceous, o: Older Formations increasing north- 

 ward. Not south of the moraine. 1 17-189 days. Sea level- 

 3,980 ft. 



6. P. triflora Gilib. (P. serotina Ehrh. P.flava of many Am. 



Auct. not of L.). In swampy places: Newf. to Vane, south 



to N. J. and Colo. Also in Eu. and Asia. 



Conn. Throughout, increasing northward. 



N. Y. Hewlett and Woodmere, L. I., thence increasing northward. 



N. J. Bergen and Essex counties, increasing northward; as a 



waif in Camden Co. 

 Pa. Pike and Northampton counties. 



