100 METASPERMAE OF THE MINNESOTA VALLEY. 
Heleocharis acicularis (Linn.) R. Br. Prodr. I, 80 (1810). 
Scirpus acicularis LINN. Spec. 48 (1753). 
Cyperus acicularis W1TH. Arr. Brit. Pl. 78 (1776). 
Mariscus acicularis MOENCH, Meth. 350 (1794). 
Scirpus trichodes MuHL. Gram. 30 (1817). 
Eleocharis costata Pr. Fl. Cech. 11 (1819). 
Isolepis acicularis SCHLECHT. FI. Berol. 1, 36 (1823). 
Scirpus chaeta SCHULTES, Mant. II, 272 (1824). 
Clavula acicularis Dum. FI. Belg. 143 (1827). 
Linnochloa acicularis Reicu. FI). Exc. 78 (1830). 
Scirpidium 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, 
Fil. 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., Pl. 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 §., 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. 
HerRB.: Taylor 1084, Glenwood; Sheldon 817, Sleepy 
Eye; Sheldon 161, 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; Batley 150, Vermilion lake; Kassube 253, Minne- 
eapolis; Oestlund 213, Ramsey Co.; Sandberg 516, Red Wing; 
Sandberg 517, Chisago Co.; Leiberg 78, Blue Earth Co.; Leiberg 
79, Blue Harth Co.; Herb. Sheld. 1848, Minneapolis. 
Heleocharis tenuis (WILLD.) SCHULTES, Mant. IT. 89 (1824). 
Scirpus 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. 8. St. 517; Cov., Fl. Ark. 
230; 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. 
HersB.: Taylor 29, Elysian; Taylor 640, Minnesota 
lake; Sandberg 515, Center City, Chisago Co. 
Heleocharis intermedia (MUHL.) ScHULTES, Mant. II, 91 
(1824). 
