138 METASPERMAE OP THE MINNESOTA VALLEY. 



North America: N. S., Q., Ont. to L. Huron and Sas- 

 katchewan; S. to N. J. and Pla.; W. to Minn., Ark. and Tex. 



Minn, valley: N. E. and N. district; forest lakes; local 

 and infrequent. 



HETER ANTHER A Ruiz and PAV. Prodr, 9, t, 2 (1794). 

 Schollera SCHREB. Gen. PL II, 785 (1791) not Both (1788). 

 Leptanthus MICHX. Fl. Bor.-Am. I. 24 (1803). 

 Buchosia VELLOZ. Fl. Flum. 33 (1827). 



Benth. and Hook., Gen. PI III, 838; Durand, Ind. Gen. Phan. 433; 

 Engler and Prantl, Nat. Pflanz. 2, IV, 74 (Schonland); O. Kuntze, Rev. Gen. 

 II, 719. 



Living species: 9; tropical Africa; N. and S. America. 

 N. America, 3-4; California, 1; S. Sts., 1; Canada, 1 ; E. Sts., 3. 



Heter anther a dubia (JACQ.). 



Commelina dubia JACQ. Icon. (1768). 



Schollera graminifolia WILLD. Nov. Act. Soc. Berl. HI, 438 (1801). 

 Leptanthus gramineus MICHX. Fl. N. Am. I, 25 (1803). 

 Heteranthera graminea VAHL, Enum. II, 45 ( 1806). 

 Schollera graminea BATCTR. Fl. N. Am. II, 54 (1822). 

 S. dubia OK. Rev. Gen. II, 719 (1891). 



Wats, and Coult., Gray's Man. 6 ed. 536; Britt., Fl, N. J. 247; Mac., Fl. 

 Can. II, 54; Upham, Fl. Minn, 149; Chap. Fl. S. St. 497; Engl. Schonl., Nat. 

 Pflanz. II, 4, 74; Wats., Fl. Calif. II, 187; Wats., King. Exp. 359; Cov., Fl. 

 Ark. 226. 



Cuba. 



North America: Ont. and Ott. to N. Eng., N. J. and 

 N. Car. ; W. to Minn. , E. Kan. , Ark. and Tex. ; also, Oregon 

 and California. 



Minn, valley: Throughout; mud beside lakes or 

 streams, or completely aquatic. 



HERB.: Sheldon 718, Sleepy Eye; Sheldon 1430, Lake 

 Benton; Sheldon 813, Sigel township, Brown Co. ; Sheldon 1135, 

 Springfield; Sheldon 1508, Lake Benton; Taylor 987, Glenwood; 

 MacMillan 19, Morton; Herrick 318, Minneapolis; Oestlund 208, 

 Minnehaha; Sandberg 596, Belle Creek. 



XVI. JUNCACEAE. Rush Family. 



Endlicher, Gen. PI. 130 (1840); Benth. and Hook., Gen. PI. Ill, 861 (1883); 

 Buchenau in Engler and Prantl, Nat. Pflanz. 2, V, 1 (1887). 



Genera: 7; 2, cosmopolitan; 5, southern hemisphere. 

 Species: 190 ; 5-6, extinct. 



JUNCUS LINN. Gen. 295 (1737) p. p. 



Tenagaia REICH. Ic Fl. Germ. IX. 22 (1847). 

 Cephaloxys DESVX. Journ. Bot. I, 324 (1808). 



