The Sedges of Nebraska 9 



Merrimaii (Bates); Sheridan Co.; Thedford; Grant Co.; 

 Deuel Co. ; Anselmo ; Lodge Pole, Cheyenne Co. ; Knox Co. ; 

 Bellevue; Lincoln; Louisville; Nebraska City (Uni.). 



The neatest specimens I have ever seen grew on the bot- 

 tom of the mill pond at Atkinson. The pond was drained 

 in June, about the ist. July 30th I collected it in full bloom ; 

 August 21, in fully ripe fruit. 

 5. E. acuminata (Muhl.) Nees. Perennial by running root- 

 stocks. In low meadows and higher sandy soil. Valen- 

 tine ; Kennedy, two localities several miles apart ; Simeon ; 

 Arabia ; Long Pine ; Ewing ; St. Libory, Howard Co. 

 (Bates); Minden (Dr. Hapeman) ; Lincoln; Kearney Co, 

 (Rydberg) ; Franklin (Uni.). 



Some of our forms are hard to separate from tenuis, not 

 having the culms flattened so much as squared and grooved. 

 That from St. Libory is typical. A collection made August, 

 1912 at Kennedy has the stems nearly square and the fruit 

 quite conical-tipped. Gray's seventh edition remarks : 

 ■' perhaps a var. of tenuis." Perhaps two varieties of tenuis. 

 Ours all have the acuminate scales, more so than the de- 

 scriptions demand. This is the only absolute mark of sepa- 

 ration from tenuis. 



IV. Stenophyllus Raf. 



I. S. capillaris (L.) Britton. Annual. In saturated soil, sand 

 bars, etc. Minden (Dr. Hapeman) ; Atkinson; Ewing; 

 Swan Lake; all in Holt Co. (Bates). My achenes vary in 

 all three specimens, those from Ewing being depressed trun- 

 cate, those from Atkinson probably normal. 



V. FiMBRiSTYLis Vahl. 



I. F. castanea (Michx.) Vahl. Perennial. In sandy soil, sev- 

 eral feet above water. Quite variable under the glass. 

 Newark, Kearney Co. (Dr. Hapeman); Valentine; Scotia, 

 Greeley Co.; Loup City (Bates); Thedford; Scotts' Bluff 

 and Horse Creek, Scotts Bluff Co.; Franklin (Uni.). 



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