Muhlenhergia GR AMINE AE Aristida 



M. capillaris (Lam.) Trin. Hair Grass. 



Rare, in rocky woods: Wilmington, Commons, 6 Nov. 1893 (A). 



Sporobolus R. Br. Drop-seed, 

 S. vaginiflorus (Torr.) Wood. 



Frequent, on dry banks and in sandy soil, including serpentine. 

 Sept., Oct. 



S. asper (Mx.) Kunth. 



Rare, in dry, sandy soil: "Sussex County," Canhy, in 1887 (P); 

 Oxford (Ta), P. M. Novik in 1908 (teste A. Chase) (U); near Win- 

 chester (QA), A. V. Smith, (R. R. Tatnall, 4741), 12 Oct. 1940 (T). 



S. clandestinus (Biehler) Hitchc. 



Rare, in dry sand: Millsboro (S), Commons in 1880 (A); Newark 

 (NC), C. 0. Houghton, 11 Sept. 1928 (UD); sandy roadside }4 mi. 

 e. of Blades (S), R. R. Tatnall, 3990, 8 Sept. 1938 (T, A, P). 



Heleochloa Host. 

 H. schoenoides (L.) Host. 



Infrequent; wharves and waste places. New Castle County; 

 not collected since 1908. Introd. from Europe. 



Brachyeljrtrum Beauv. 

 B. erectum (Schreb.) Beauv. 



Infrequent; rocky woods of the Piedmont. July to mid- Aug. 



Oryzopsis Mx. Mountain Rice. 

 O. racemosa (J. E. Sm.) Ricker. 



Rare; rocky wooded hillsides: Mt. Cuba (NC), Commons & 

 Tatnall, 30 July 1874 (A, D); Mt. Cuba, R. R. Tatnall, 1196, 27 

 June 1931 (T). 



Stipa L. Needle Grass. 



S. avenacea L. Black Oat Grass. 



Infrequent ; dry wooded or open sandy soil, chiefly on the Coastal 

 Plain. Late May to mid-June. 



Aristida L. Triple-awned Grass. 

 [A. tuberculosa Nutt. The New Castle County record in Keller & 

 Brown, "Flora of Philadelphia and Vicinity," should be 

 referred to A. oligantha Mx. (See E. Tatnall: MS 

 Catalog.)] 



[32] 



