126 POACEAE 



33. Sporobolus R. Br. 



Panicle contracted. 

 Annuals. 



Spikelets 3.5-5 mm. long; flowering scale pubescent. I. S. vaginaeflorus. 



Spikelets 2.5-3 mm - long; flowering scales glabrous. 2. 5. neglectus. 



Perennials. 



Flowering scale pubescent. 3. 5. clandestinus. 



Flowering scale glabrous. 4. 5. asper. 



Panicle open, its branches spreading, at least at maturity. 



Annuals. 5. 5. uniflorus. 



Perennials. 



Culms tufted; no rootstocks. 



Spikelets 2-3 mm. long; empty scales ovate to 



lanceolate. 6. 5. cryptandrus. 



Spikelets 5-6 mm. long; first scale subulate, much 



narrower than the second. 7. 5. helerolepis. 



Culms from long running rootstocks 8. S. Torreyanus. 



1. S. vaginaeflorus Torr. In dry soil: southern Me. to S. Dak., 



south to Ga. and Tex. 



Throughout the range except the pine-barrens, there rare and 

 probably introduced, most common northward. 



2. S. neglectus Nash. In dry soil: N. B. to S. Dak., Va. and 



Mo. 



Conn. Oxford; rare. 



N. Y. Near the northern end of Manhattan, unknown elsewhere. 

 N. J. Woodruff's Gap, Sussex Co. 

 A rare and local species, with us. 



3. S. clandestinus (Spreng.) Hitchc. (S. asper of many older 



works not of Michx.). In dry soil: Conn, to Mo., south to 



Fla. and Tex. 



Conn. New Haven; rare. 



N. Y. Reported from Westchester Co. 



N. J. Recorded from Warren, Hunterdon and Bergen counties; 



occasional on the coastal plain where it is scattered throughout, 



except in the pine-barrens. 



A rare and scattered species finding its northern distribution 

 point in our area. 



4. S. asper (Michx.) Kunth. (S. longifolins (Torr.) Wood.). In 



dry soil : Me. to S. Dak. and Tex. 



Conn. Common along the coast, decreasing northward. 



N. Y. Common on L. I. and S. I., also in the Bronx. 



