100 METASPERMAE OF THE MINNESOTA VALLEY. 



Heleocharis acicularis (Linn.) R. Br. Prodr. I. 80 (1810). 



Scirpus acicularis Linn. Spec. 48 (1753). 



Ci/perus acicularis With. Arr. Brit. PI. 78 (1776). 



Mariscus acicularis Moench, Meth. 350 (1794 j. 



IScirpus trichodes Muhl. Gram. 30(1817). 



Eleocharis costata Pr. F1. Cech. 11 (1819). 



Isolepis acicularis Schlecht. F1. Berol. 1, 36 (1823). 



(Sci>2)HS c/iae^a ScHULTES, Mant. II. 272 (1824;. 



Clavula acicularis DUM. Fl. Belg. 143 (1827). 



Linnochloa acicularis Reich. Fl. Exc. 78 (1830). 



ScirpicUum acicularis Nees, Linn. IX, 293(1835). 



Chaetocyperus urceolatus Leibm. Mex. Halvg. 243 (1849). 

 Wats, and Coult., Gray's Man. 6 ed. 576: Britt, Fl. N. J. 263: Upham, 

 Fl. Minn. 151; Webb., Fl. Neb. 99; Coult., Fl. Colo. 369: Mac, Fl. Can. II, 

 97: Chap., Fl. S. St. 518; Wats., Fl. Calif. II, 221; Richt., PI. Eur. 143; 

 Led, Fl. Ross. IV, 243; Hook., Fl. Gt. Brit. 441; Herd., Fl. Eur. Russ. 

 138; Engl. Pax, Nat. Pflanz II, 2, 112; Wats., King Exp. 360; Roth., Wheel. 

 Exp. 275, 376; Cov., Fl. Ark. 229; R. and S., Syst. II, 154; Britt., Jour. Mic. 

 Soc. N. Y. V, 104; Hart., Fl. Scand. I, 449. 



Northern hemisphere to N. W. India and Mexico. 

 North America: N, S., Hudson Bay and Saskatchewan; 

 S. to N. J. , Fla. and Mex. ; W. to Pac. from Santa Barbara to 

 Brit. Col. 



Minn, valley: Throughout; wet places, borders of 

 marshes and shores of lakes. 



Herb.: Taylor 10S4, Glenwood; Sheldon 817, Sleepy 

 Eye; Sheldon 767, Madison Lake, Blue Earth Co.; Ballard 790, 

 Swan lake, Carver Co. ; Ballard 281, Jordan, Scott Co. : Bal- 

 lard 79, Chaska; Taylor 74, Elysian; MacM. and Sheld. 52, 

 Brainerd; Bailey 150, Vermilion lake; Kassuhe 253, Minne- 

 eapolis; Oestlund 213, Ramsey Co. ; Sandberfj 516, Red Wing; 

 Sandberg 517, Chisago Co. ; Leiberg 78, Blue Earth Co. ; Leiberg 

 79, Blue Earth Co. ; Herb. Sheld. 1848, Minneapolis. 



Heleocharis tenuis (Willd.) Schultes, Mant. II, b9 (1824). 



Scirjnis tenuis Willd. Enum. I, 76 (1809;. 

 Wats, and Coult., Gray's Man. 6 ed. 575: Britt., Fl. N. J. 263; Upham, 

 Fl. Minn. 151: Mac, Fl. Can. II. 97; Chap., Fl. S. St. 517: Cov., Fl. Ark. 

 2.30: Britt., Jour. N. Y. Micro. Soc. V, 108. 



North America: N. S. to Lake Nipigon, L. Winnipeg, 

 Assiniboia and Rockies; S. to N. J. and N. Car.; W. to Minn, 

 and Mo. 



Minn, valley: Forest district; peat bogs and marshes. 



Herb.: Taylor 29, Elysian; Taylor 640, Minnesota 

 lake; Sandberg 515, Center City, Chisago Co. 



Heleocharis interiuedia (Muhl.) Schultes, Mant. II, 91 

 (1824). 



