TJie Sedges of Nebraska 13 



X. Carex L. 

 Species all perennial ; the largest and most difficult genus 



EUCAREX 



1. C. lupulina ]\Iuhl. In swamps. Fremont Island in the 



Platte River, Fremont, Dodge Co., collected by Engberg 

 (Uni.) ; Callaway (Bates). 



2. C. hystricina Muhl. In saturated banks and swales. Hal- 



sey ; Central City, Merrick Co. ; Broken Bow ; Aten, Cedar 

 Co.; Thedford; War Bonnet Canon, Sioux Co.; Whitman, 

 Grant Co.; Lincoln (Uni.); Ft. Robinson and Crawford, 

 Dawes Co. ; Valentine ; Long Pine ; St. Paul ; Burwell ; Red 

 Cloud (Bates). All over the state. 



3. C. pseudocyperus L. In bogs. In the Lake region of Grant 



Co., 20 miles south of Whitman (P. A. Rydberg only, Uni.). 



4. C. comosa Boott. In bogs. On Gordon Creek north of Sim- 



eon P. O. about 4 miles, Cherry Co. (Bates) ; near Oasis 

 P. O., Cherry Co. (R. J. Pool, Uni.). 



5. C. squarrosa L. In bogs. Lincoln (H. I. Webber only, 



Uni.). 



6. C. trichocarpa Muhl. In ditches and moist banks. Nemaha; 



Hastings (Bates) ; with the impressed nerves and glabrous 

 perigynia of deiveyi Bailey, and the length of spikes of the 

 species; also Minden (Dr. Hapeman) ; Minden (Rydberg) ; 

 Emerson, Dixon Co. ; Nebraska City ; this last with scales 

 partly aristate (Uni.). 

 a. var. aristata R. Br. Whitman, Grant Co. (Hapeman) ; 



Mullen (Uni.). 

 ai. aristata imberbis Gray. Ashland, Saunders Co. 



(Uni.); Neligh, Antelope Co.; Arcadia, Valley Co.; 



Scotia, Greeley Co. (Bates) ; 

 02. aristata confusa, nova forma. Kennedy, Cherry Co. 



(Bates) ; i meter high, leaf 7.5 mm. wide, sheaths 



densely pubescent; perigynia hairy as in trichocarpa, 



teeth spreading, scales mostly aristate, spikes 7-9 cm. 



long. 



157 



