THE IOWA SEDGES. 



325 



Everywhere very common in low ground, margins of 

 streams and ponds, and in swamps. Very variable in size, 

 from 1 foot or less in height, with spikes 2-6 lines in length, to 

 4 feet high, with spikes 8 lines long and 3 lines wide. 



Ames, various collectors; Emmet county. Crafty ; Hamil- 

 ton county, 1891, Rolfs ; Fayette count)', 1894, Fink ; Shelby 

 countv. Fitzpatrick; Grinnell, June, 1886. fohnson; Scott and 

 Muscatine counties, Barnes & Miller ; Decatur county. 1897, 

 Fitzpatrick ; Missouri Valley, June 21, 1897, Pammel ; Gil- 

 bert, July 17, 1897, Combs <£■ Ball. 



4. E. Palustris glaucescens ( Wiltd.) Gray. Man.. 5th 



ed., 558 (1867). 



Illus. Flora, i, 252 ; Gray's Man., 6th ed., 575 ; Upham, Fl. Minn., 151 ; Rvd- 

 berg, FI. Sand Hills, Neb., 1S4. 



Low, wet ground, eastern half of the state; perhaps often 

 confounded with the type from which it is distinguished by 

 its more slender culms, smaller akene, and narrower and more 

 acute tubercle. Not before reported from Iowa. 



Davenport, 1889, and Iowa City, Hitchcock. 



5. E. acicularis (Z.) R. & S. 



Scirpus acicularis L. Sp. PI., 1, 4S (1753). 

 Illus. Flora, 1, 252, fig. 5S7; Gray's Man., 6th ed., 576; Arthur, Fl. Iowa, 33: 

 Hitchcock, PI. Ames, 523; MacMillan, Metas. Minn. Yal., 100; Tracy; 

 Fl. Mo., 91; Bessey, Cont. Fl. Iowa, 123; Brendel, Fl. Peoriana, 62; 

 Bruhin, Fl. Wis., 278; Rydberg, Fl. Sand Hills. Neb.. 1S4; Williams, 

 Grass, and For. PI. Daks., 41; Fink, Iowa Acad. Sci., iv, 105. 



Very common throughout; edges of streams and ponds and 

 low wet meadows; spikes more loosely flowered than our 

 other species. 



Charles City, Aug., 1875, Arthur; Iowa City, Hitchcock; 

 Emmet and Dickinson counties, 1896, Crafty ; Fayette county, 

 1893, Fink ; Ames, 1883, Hitchcock ; Powesheik county, July, 

 1888, yohnson ; Scott and Muscatine counties, Barnes & 

 Miller ; Kossuth county, 1897, Crafty ; Missouri bottom near 

 Bartlett, Sept. 20, 1897, Baldwin; Gilbert, July 17, 1887, No. 

 438, Combs & Ball. 



