248 METASPERMAE OF THE MINNESOTA VALLEY. 



Europe; W. Asia; China; Himalayas; Australia; almost 

 cosmopolitan. 



North America: Greenland to Brit. Col. in Can. ; U. 

 S. across the continent; mts. of Utah to 6,000 ft. alt. 



Minn, valley: Abundant throughout in ponds, lakes 

 and sluggish streams. 



Herb.: Ballard 170, Shakopee; Sheldon 317, Madison 

 Lake; Sheldon 1152, New Ulm; Sheldon 1136, Springfield; Shel- 

 don 722, Sleepy Eye; Ballard 277, Jordan; Holzinger 5, Lake 

 Winona; Huntington 1, Rock Co.; Sandberg 19, Cannon Falls; 

 He7'b. Wickersheim 8, Lake Stay, Lincoln Co. ; Herb. Mayer 8, 

 Granite Falls. 



Ranunculus aquatilis Linn. var. caespitosus DC. Prodr. 



L 26 (1824). 



B. hydrocharis caespitosus Hiekn. Seem. Journ. Bot. IX, 65 (1871). 

 Wats, and Coult., Gray's Man. 6 ed. 41; Wats., Bibl. Ind. I, 17: Mac, 

 Fl. Can. I, 16. 



North America: Ont. to 111., Minn., Dak. and Sas- 

 katchewan. 



Minn, valley: S. and S. W. districts; pools of stagnant 

 water and rooting in the mud. 



Herb.: Sheldon S18, Cottonwood river, near Sleepy 

 Eye; Sheldon 1134, Cottonwood river, Springfield; Sheldon 317, 

 Duck lake, Blue Earth Co. ; Sheldon 354, Lake Madison, Blue 

 Earth Co.; Sheldon 435, Lake Elysian, Waseca Co.; Sheldon 

 1452. Pipestone. 

 Ranunculus circinnatus Sibth. Fl. Oxon. (1794). 



B. aquatilis Linn. var. stagnatilis DC. Prodr. I, 26 (1824). 

 B. divaricatus Gray, PL Wright, II, 8 (1852). 

 Wats, and Coult., Gray's Man. 6 ed. 40; Upham, Fl. Minn. 18; Coult , 

 Fl. Colo. 6; Mac, Fl. Can. I, 16; II, 296; Wats , Bibl. Ind. I, 17; Wats., 

 King Exp. 6; Hook., Fl. Gt. Brit. 6; Nym., FL Eur.; Hart , FL Scand. I, 

 168; Webb., Appx. Neb. 30. 



W. Europe (local). 



North America: Man. to Rocky mts. and Brit. Col.; 

 S. to Vt., Maine, Iowa, Dak., Neb., Colo., Nev. and Oregon. 



Minn, valley; Reported from Mankatoand Alexandria; 

 probably local in the forest lakes of the valley. 

 Herb. : Bailey 318, Vermilion lake. 



THALICTRrn Linn. Gen. 461 (1737). 



Pliysociirpuiu Spacii, Suit. Buff. VII, 237 (1839). 

 Tripteriuin SrACii, 1. c (18.3i»). 

 Baillon, Hist. PL I, 87; Benth. and Hook., Gen. PI. I, 4; Engler and 



