POACEAE I 2 1 



25. Oryzopsis Alichx. [ Urachne Trin.] 



Spikelets, exclusive of awn, 2.5-4 mm- long. I. 0. pungens. 



Spikelets, exclusive of awn, 6-8 mm. long. 



Culm nearly naked, leaves all crowded at the base; panicle 



branches erect. 2. 0. asperifolia. 



Culm leafy to the top; panicle branches spreading. 3. 0. racemosa. 



1. 0. pungens (Torr.) Hitchc. In dry rocky places: Pa. to Lab. 



and Br. Col. 



Conn. Rare in New London Co., known otherwise only from 



northern Tolland and Windham counties. 

 N. Y. Dutchess Co., increasing in the higher elevations of the 



Catskills. 

 N. J. High Point, Sussex Co. (Essex Co. record unverified.) 

 Pa. Monroe and Luzerne counties. 



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

 ward. Not south of the moraine. 1 17-168 days. Sea level- 

 3,665 ft. 



2. O. asperifolia Michx. In woods: Newf. to Br. Col., south to 



N. J., Pa., Minn, and in the Rocky Mts. to N. Mex. 

 Conn. Rare along the coast, increasing northwestward. 

 N. Y. Pine Plains, Dutchess Co. 



N. J. Near Plainfield (old specimen), not recently collected. 

 Pa. Monroe and Luzerne counties; rare. 



A scattered and local species, known only north of the moraine, 

 in our range. 



3. O. racemosa (J. E. Smith) Ricker. In rocky woods: Me. to 



Ont., south to Md. and Ky. 



Conn. Scattered throughout, rare in the southeast. 



N. Y. Rockland Co., increasing northward; reported also from 



Van Courtlandt Park, by E. P. Bicknell. 

 N. J. Scattered throughout the region north of the coastal plain. 

 Pa. Throughout. 



Tertiary, 0: Cretaceous, 0: Older Formations, increasing north- 

 ward. 117-207 days. Sea level-2,000 ft. 



26. Stipa L. 

 1. S. avenacea L. In dry woods: Mass. to Wise, Fla. and Tex. 

 Conn. Not uncommon along the coast, unknown elsewhere. 

 N. Y. L. I., S. I., and up the Hudson Valley to Yonkers, unknown 

 northward. 



