138 METASPERMAE OF THE MINNESOTA VALLEY. 



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

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



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

 and infrequent. 



HETERANTHERA Ruiz and Pay. Prodr, 9, t, 2 (1794). 

 SchoUera Schreb. Gen. PL II, 785 (1791) not Roth (1788). 

 Leptantlius Micnx. Fl. Bor.-Am. I, 24 (1803). 

 Buclio-sia Velloz. Fl. Flum. 33 (1827). 

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

 Engler and Prantl, Nat. Pfianz. 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, 3; E. Sts., 3. 

 Heteranthera dubia (Jacq.). 



Commelina dubia Jacq. Icon. (1768). 



SchoUera graminifoUa Willd. Nov. Act. Soc. Berl. Ill, 438 (1801). 



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



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



SchoUera graminea Baktr. 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. iSchonl., 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 IJfSO, 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 mi Engler and Prantl, Nat. Pflanz. 2, V, 1 (1887). 



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

 Species: 190 ± ; 5-6, extinct. 



jrNCUS Linn. Gen. 295 (1737) p. p. 



Teiiagaia Reich. Ic Fl. Germ. IX. 22 (1847). 

 Cei>lmloxy.s Desvx. Journ. Bot. 1, 321 (1808). 



