Setaria GRAMINEAE Cenchrus 



Setaria Beauv. 



S. lutescens (Weigel) Hubb. (S. glauca of Gray's Man., ed. 7.) 

 Yellow Foxtail. 



Common in waste places and cultivated ground. July, Aug. 

 Nat, from Europe. 



ff S. geniculata (Lam.) Beauv. {S. imberhis of Gray's Man., ed. 7.) 



Moist, chiefly saline soil, Coastal Plain; infrequent. July to 

 mid-Sept. 



S. verticillata (L.) Beauv. Barbed Foxtail. 



Frequent in waste places, cultivated ground and city streets. 

 July to Sept. Nat. from Europe. 



Var. ambigua (Guss.) Pari. 



Sparingly introduced from Europe: yard in Sharptown (Wi), 

 Otis, 10 July 1914 (D). 



S. magna Griseb. Giant Foxtail. 



Frequent in fresh and brackish marshes, and often along dikes 

 and in other disturbed ground; Coastal Plain. Aug., Sept. 



S. viridis (L.) Beauv. Green Foxtail. 



A weed of cultivated soil and waste places, throughout. Aug. 

 to Oct. Nat. from Europe. 



S. Faberii Herrm. See Fernald : Rhodora 46, 57-58. 1944. 



A recent introduction from eastern Asia, becoming common in 

 fields and on roadsides. Piedmont and Coastal Plain. Aug. to Oct. 



S. italica (L.) Beauv. Hungarian Grass. 



Occasionally escaped from cultivation, and persisting in waste 

 places. 



Cenchrus L. Sand Bur. 



C. longispinus (Hackel) Fernald. (C. carolinianus Walt. C. pauci- 

 florus of auth. Rhodora 45, 387. 1943.) Field Sand 

 Bur. 

 Infrequent; in open sandy soil, Piedmont and Coastal Plain. 

 Mid-July through September. 



/ U C. tribuloides L. Dune Sand Bur. 



Common in sands of the seashore; infrequent inland; Coastal 

 Plain. Late July to mid-September. ^_^. , 



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