lO John Mallory Bates 



a. var. puberula (Mx.) Britton. Callaway; Ewing 

 (Bates). All my collections are more or less pubescent 

 or scabrous and perhaps should come under the variety. 



VI. SciRPUs L. 



1. S. hallii A. Gray. Annual. In moist, sandy soil, rare. 



Kennedy, Cherry Co.; southwestern Holt Co. (Bates). 

 Undoubtedly is to be found in other localities. 



2. S. americanus Pursh. (pungens Vahl.). Perennial. In 



shallow water and saturated soil. Valentine, Eli and Ken- 

 nedy, Cherry Co. ; Alliance, Box Butte Co. ; Wood River, 

 Hall Co.; Red Cloud (Bates); Thedford and Plummer's 

 Ford, Thomas Co. ; Anselmo, Broken Bow, Custer Co. ; 

 Aten, Cedar Co. ; Hat Creek Basin, Sioux Co. ; Lawrence 

 Fork, Banner Co. ; Franklin ; Louisville, Cass Co. ; Oshkosh, 

 Deuel Co. (Uni.). Evidently all over the state. 



3. S. lacustris L. ( S. validiis Yahl.). "Bulrush." Perennial. 



Chiefly in shallow water and marshes. Valentine ; Calla- 

 way; St. Paul (Bates); Halsey, Thomas Co.; Thedford 

 Kiowa Valley, Scotts Bluff Co. ; Newcastle, Dixon Co. 

 Talmadge, Otoe Co. ; Nebraska City ; Wahoo, Saunders Co. 

 Lincoln ; Kearney, Buffalo Co. ; Broken Bow, Custer Co. 

 Cherry Co., by Smith and Pound (Uni.) ; Newark (Dr. 

 Hapeman). 



4. S. occidentalis (Wats.) Chase. Similar, but longer spikelets 



and larger achenes. Kennedy (Bates) ; No. 22 collected by 

 J. P. Sprecher. No locality. Probably in vicinity of Col- 

 umbus (Uni.). I have included these two sheets here, 

 because they answer the requirements of occidentalis in 

 Gray's seventh edition. But I am convinced that it is a 

 poor species, since the achenes vary much in shape and size, 

 and one sheet has the long spikelets of this species and the 

 small achenes of lacustris. It should be only a variety that 

 could include all the forms with spikelets nearly 2 cm. long. 



5. S. heterochaetus Chase. In Gray's seventh edition attributed 



to " Neb." There is none in our collection with " trigonous 

 achenes." 



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