52 METASPERMAE OF THE MINNESOTA VALLEY. 



North America: Mass, and N. J. to Minn, and Van- 

 couver; S. to Gulf of Mexico and to Sacramento, Calif. 



Minn, valley: Reported from N. E. districts; rare; 

 damp fields and shores of lakes or along streams. 



Panicum nudum WALT. Fl. Car. (1788). 

 P. dichotomiflorum MTCHX. Fl. N. Am. (1803). 

 P. divergens MUHL. Gram. (1817). 

 P. autumnale Bosc. Mem. (1822). 

 P. fragile KUNTH, Enum. (1833). 



Wats, and Coult., Gray's Man. 6 ed. 630; Upham, Fl. Minn. 172; Vas., 

 Mon. 33. 



North America: 111. to S. Minn., Mo. and Tex? 

 Minn, valley: Reported from S. central region; rare 

 or doubtful; hillsides or plains; sandy soil. 



Panicum capillare LINN. Spec. 58 (1753). 



Milium capillare MOENCH, Meth. 203 (1794). 

 ? Panicum strigosum ELL. Sk. I, 126 (1821). 



Wats, and Coult., Gray's Man. 6 ed. 630; Britt., Fl. N. J. 281: Mac., 

 Fl. Can. II, 177; Wats., Fl. Calif, II, 258; Coult., Fl. Colo. 403: Webb., Fl. 

 Neb. 106; Chap., Fl. So. St. 574; Upham, Fl. Minn. 172; Richt., PL Eur. I, 

 26; Led., Fl. Ross. IV, 470; Wats., King Exp. 394; Cov., Fl. Ark. 232; 

 Vas., Mon. 33. 



Introduced in S. Europe and Russia. 

 North America: N. S., N. Br., Q., Ont. to Saskatch- 

 ewan, Man., Brit. Col. and Vancouver; S. to N. Eng., N. J. 

 and Fla. ; W. to Pac. coast and S. Calif. 



Minn, valley: .Throughout; abundant; dry fields and 

 along embankments. 



HERB. : Taylor 1155, Glenwood; Sheldon 956, Redwood 

 Falls; Sheldon 1460, Pipestone; Foofe 8, Worthington; Oest- 

 hmd 340, Hennepin Co.; Sandberg 597, Red Wing; Sheldon 

 1529, Lake Ben ton; Herb. Sheld. 1671, Minneapolis. 



CENCHRU8 LINN. Gen. Corr. n. 989 (1737), p. p. 



Benth. and Hook., Gen. PL III. 1105; Durand, 2nd. Gen. Phan. 467; 

 Engler and Prantl, Nat. Pflanz. 2, II. 36 (Hackel). 



Living species : 12 ; tropical and subtropical regions and in 

 temperate N. and S. America. N. America, 4, So. Sts., 4; E. 

 Sts., 1; California, 1; Rocky Mts., 1; PL King., 1. 



Cenchrus tribuloides LINN. Spec. ed. II. 1483 (1762). 

 C. carolinianus WALT. Fl. Car. 79 (1788). 

 C. echinatus MUHL. Gram. 52 (1817). 



Wats, and Coult., Gray's Man. 6 ed. 634; Britt., Fl.N. J. 282; Mac., Fl. 

 Can. II. 181; Webb.,Fl. Neb. 106; Wats., Fl. Calif. I. 261 ; Coult., Fl. Colo. 

 404; Chap., Fl. So. Sts. 579; Upham, Fl. Minn. 173; Engl. Hackel, Nat. 



