THE IOWA SEDGES. 335 



The following species of the Iowa flora are also natives o r 

 Europe, and it is a noticeable fact that they are mostly high 

 northern forms: 



Carex stenophylla Wahl. 



Car ex chordorrhiza Linn. f. 



Carex fill for mis L . 



Carex riparia W. Curtis. 



Carex fusca All 



Carex limosa L. 



Carex teretiuscula Good. 



The genus contains over 1,000 species, of which number 

 North America, north of Mexico, contains over 300. 



Illus. Flora, 205: Gray's Man., 6th ed., 133. Species and varieties cata- 

 logued in Arthur, Cont. Fl. Iowa, i-vi, 66: MacMillan, Metas. Minn- 

 Val.,60; Tracy, Fl. Mo., 72: Bessey, Cont. Fl. Iowa. 15: Brendel, Fl. 

 Peoriana (including the state), 76: Smythe, PI. Kansas, 67; Upham, 

 Fl. Minn., 89; Bruhin, Ver. Fl. Wis., 69; Webber, Fl. Neb. and Rep. 

 i-iv, 45; Rydberg, Fl. Bl. Hills, S. D., 19: Williams, Grass, and For. 

 PI. Daks., 19: Fink, Fl. Fayette, Iowa, 19. 



i. C. intumescens Radge. Linn. Trans., vn, 97 (1804). 



Illus. Flora, 1, 293, rig. 675; Gray's Man., 6th ed., 592: Arthur, Fl. Iowa, 34; 

 Hitchcock, PI. Ames, 524: MacMillan, Metas. Minn. Yal., 129; Tracy, 

 Fl. Mo., 93; Wheeler, Fl. Milwaukee Co., Wis., 1S7. 



Rare in low ground. This probably includes all of the 

 Iowa plants heretofore referred to C. Jollicidata L. This 

 latter species is yellowish colored, especially the fertile spikes, 

 the perigynia less inflated, and probably does not range farther 

 west than Michigan. C. intumescens Rudge is green through- 

 out, the perigynia much inflated. 



Ames, Arthur; Story county, Hitchcock; Shelby county, 

 July. 1895, Fitzpatrick. 



2. C. asa-grayi Bailey. Bull. Torr. Club , xx, 427 (1893). 



C.grayi Carey, Sill. Jour., 2nd ser., iv, 22 (1847), not C. grayana Dew. 



(1834)- 

 Illus. Flora, 1, 293, fig. 576; Gray's Man., 6th ed., 592; Arthur, Cont. Fl. 

 Iowa, in; Hitchcock, PI. Ames, 524; Brendel, Fl. Peoriana, 63; Bruhin, 

 Zwei. Xach. Fl. Wis., 643. 



