THE IOWA SEDGES. 323 



Ames, 1889, Hitchcock: Charles City, 1875, Arthur; Cedar 

 Rapids, 1 89 1, Pammcl; Iowa City, Hitchcock: La Crosse, 

 Wis., Pammcl: Fayette county, 1894, Fink: Clinton. 1895, 

 Pammcl ; Cedar Rapids, a peculiar form in general appear- 

 ance approaching C. schweinitzii Torr., Hitchcock; Scott and 

 Muscatine counties Barnes & Miller ; Hancock county, 188 1, 

 Ehingcr ; Johnson county. July 15, 1897, Shimek; Muscatine 

 Island. Louisa county, Aug. 1, 1897, Meyers; Belmond. 1897, 

 Pammcl. 



DULICHIUM L. C. Richards. Pers. Syn., 1, 65 (1805). 



A monotypic genus of the eastern half of North America. 



1. D. arundinaceum (Z.) Britton. Bull. Torr. Club, xxi, 

 29 (1894). 



D. spat/iacenm, Pers., Syn., 1, 65 (1S05). 

 lllus. Flora, 1, 247, fig. 576; Gray's Man., 6th ed., 573: Arthur, FI. Iowa, 33; 

 MacMiflan, Metas. Minn. Val., 90; Tracy, Fl. Mo., 91; Brendel, Fl. 

 Peoriana, 61; Wheeler, Fl. Milwaukee Co., Wis., 1S6; Webber, App, 

 Fl. Neb., 24. 



Low, wet places; central and eastern portions of the state; 

 rather rare. 



Ames, June, 187 1, Arthur; Story county, Hitchcock; La 

 Crosse. Wis., Pammcl. In bogs along Skunk River. Jasper 

 county. July 3, 1886, Johnson; Moscow, Muscatine county, 

 1893, and Noels, Scott county, 1894, Barnes & Miller. 



ELEOCHAR1S R. Br. Proc. Nov. Hoi.. 1. 209 ( 1810). 



Sedges with simple, leafless culms, bearing single capitate 

 or elongated spikes, the akene surmounted by a tubercle and 

 usually subtended with bristles. Annuals or perennials, abound- 

 ing in water or wet situations. 



Species about 100. 



Illus. Flora, 22; Gray's Man., 6th ed., 21; MacMillan, Metas. Minn. Val., 7. 

 Arthur, Fl. Iowa. 5; Tracy, Fl. Mo., 6; Brendel, Fl. Peoriana, 5; Web- 

 ber, Fl. Neb. and Rep. i-iv, 6; Fink, Fl., Fayette, Iowa, 3. 



