396 METASPERMAE OF THE MINNESOTA VALLEY. 
North America: Atl. provinces to Coast range of Brit. 
Col.; Mackenzie river to 64° N. lat.; U. S. throughout to Fla., 
Miss. and Tex. 
Minn. valley: Throughout; wet meadows and bogs; 
abundant. 
Hers.: Ballard 372, Helena, Scott Co.; Ballard 629, 
Chaska; Ballard 350, Helena, Scott Co.; Taylor 591, Minnesota 
lake; Taylor 330, Janesville; Taylor 990, Glenwood; Taylor 276, 
Janesville; Sheldon 528, Waseca; Sheldon 1290, Lake Benton; 
Sheldon 752, Sleepy Eye; Taylor 760, Glenwood; Kassube 102, 
Minneapolis; Bailey 251, Vermilion lake; Oestlund 69, Minne- 
apolis; Sandberg 222, Cannon Falls; MacM. and Sheld. 40, 
Brainerd; Herb. Sheld. 1698, Minneapolis; Herb. Moyer 93, 
Montevideo. 
SIUM Linn. Gen. 219 (1787). 
Berula Kocu, M. and K. Deutschl. Fl. II, 433 (1826). 
Sisarum Tourn. Inst. 308 (1700). 
Baillon, Hist. Pl. VII, 222; Benth. and Hook., Gen, Pl. I, 893; Du- 
rand, Ind. Gen. Phan. 159. 
Living species: 6; N. hemisphere and 8. Africa. N. 
America, 2; 1, W. Sts.; 1, HE. and W. Sts. Russia, 5; Europe, 
3; Russian Europe, 38. 
Sium angustifolium Linn. Spec. 2 ed. 1672 (1762). 
Berula angustyolia Kocu, Deutsch. FI. IT, 455 (1826). 
Sium pusilum Nurr. T. and G. Fl. I, 611 (1838), 
Wats. and Coult., Gray’s Man. 6 ed. 207; Upham, Fl. Minn. 63; Brew. 
and Wats., Fl. Calif. I, 260; Coult., Fl. Colo. 115; Hook., Fl. Gt. Brit. 173; 
Mac., FI. Can. I, 534; Coult., Fl. ‘lex. 148; Led., Fl. Ross. II, 258; Wats., 
King Exp. 121; Roth , Whee}. Exp. 133; Cov., Fl. Ark. 185; Wats., Bibl. 
Ind. I, 415; C. and R., Rev. N. Am. Umb. 133; Hart., Fl. Scand. I, 154; 
Webb., Appx. Neb. 33. 
Europe and Siberia. 
North America: Ont. to N. Eng., Minn. and Colo.; 8. 
to Tex. and Mex., and in Calif. 
Minn. valley: S. central district; local in region of 
Mankato and Kasota. 
HeERsB.: Sandberg 226, Goodhue Co.; Grant 1, Vicker- 
man’s spring; Leiberg 24, Blue Earth Co. 
Sium cicutaefolium K.C. GME. Syst. II, 482 (1806). 
2? 8S. suave WALT. F. Car. 115 (1788). 
S. lineare Micux. FI. N. Am. I, 167 (1803). 
S. tenuifolium Mun. Cat. 30 (1818). - 
S. latifolium BrageL. Fl. Bost, 69 (1824). 
S. rugosum Rar. Med. Bot. II, 264 (1830). 
