I^O NATURAL HISTORY BULLETIN. 



Wats, and Coult., Gray's Man., 6th eel., 553; Upham, Fl. 

 Minn., 135; Beal and Wheeler, FL Mich., 144. 



Floating as little grains on the surface of the water. 



Iowa Cit}^ and Cedar Rapids, where it is very common 

 some years, Macbride, Shhnek; Mississippi River near Oquaw- 

 ka. 111.. Patterson: Muscatine, Rcfpcrt. 



TYPHACEiE. 

 TYPHA IJun. Spec. PL, (1753). 



I. T. LATiFOLL\ Linn. Spec. PL, 971 (1753). 



Wats, and Coult., Gray's Man., 6th ed., 547; Arthur, Fl. Iowa, 

 30; Hitchock, Ames FL, 521; Macmillan, Metas. Minn.VaL, 31. 



A well known plant of wide distribution throughout the 

 northern hemisphere. Fertile portion of spike when mature 

 often I in. or more in diameter, and 5 to 8 in. long. Common 

 in marshes and edges of ponds. July, August. 



Decorah, Hohvay; Iowa City, Macbride: Emmet and Kos- 

 suth counties, Cratty : Ames, Arthur, Hitchcock; Hamilton 

 county, Rolfs: Muscatine, jReppert: Charles City, Arthur: 

 Cedar Rapids. Keokuk, Taylor county, Shiniek: Henry, 

 Scott, Delaware, Jackson counties, JMacbride. 



SPARGANIACEiE. 



SPARGANIUM Linn. Spec. PL (1753). 



I. S. SIMPLEX Hiids. Fl. Angl. Ed. 2, 401 (1762). 



^S". simplex Huds. var. nuttallii Englm. in Gra3''s Man., 

 5th ed., 481 (1867). 



Wats, and Coult., Gray's Man., 6th ed., 548; Arthur, FL Iowa, 

 30; Hitchcock, Ames FL 521; Upham, Fl. Minn., 135. 



Marshes and edges of lakes; rare or local. July, August. 

 Ames, four miles southwest of College, Hitchcock. 



