NOTES ON THE AQUATIC PHENOGAMS OF IOWA, i^- 



Morong, Naiad. N. A., 37; Wats, and Coult., Gr ly's Man., 

 6th ed., 562; Macmillan, Metas. Minn. Val., 39; Arthur, 

 Cont. Fl. Iowa. III.; Hitchcock, Ames, FL, 522. 



A beautiful plant with bright, smooth leaves. Shallow 

 water in lakes or slow streams. July, August. 



V'inton. Art/iitrs Cat.; Iowa Lake, Emmet county, C ratty; 

 Lake Okoboji and Ames, Hitchcock ; Muscatine, Refpert; 

 Cedar Rapids. loua City, Hancock count}-, Shinick. 



10. P. FOLiosLS Raf. Med. Rep.. II., Hex. V., 354 (1808). 

 P. -pauci-florns Pursh. Fl. Am., I.. 121 (1814), non Lam. 

 Fl. Franc, III.. 209 (1778). 



Morong, Naiad. N. A., 39: Wats, and Coult., Gray's Man.,. 

 6th ed., 563; Arthur. Fl. Iowa, 30; Macmillan, Metas. Minn. 

 Val, 39. 



A ver\' variable species, usually growing entirely under 

 water, and widely distributed throughout the United States 

 and Canada. Morong in his Auiiadacece of JVorth America 

 says, "spikes about 4-flow'ered." Emmet county, Iowa, speci- 

 mens determined by him have the spikes 4- to 6-fruited. 

 Some of Mr. Reppert's specimens vary from the tvpe in 

 having the spikes 6- to lo-fruited. in this respeC" approaching 

 the var. niagarcnsis (Tuck. ) Gra}'. Similar forms were also 

 collected at Ames by Prof. Hitchcock. June. July- 



Shallow water in ponds and lakes, Emmet countv. Cratty ; 

 Muscatine. Rcppcrt: Iowa City. Lee, Hancock, and Linn 

 counties. Shiinck; Mt. Pleasant, J//7A'.- Charles City, ..4r/////r,' 

 Grand Junction. Bessey ; Dickinson and Woodbury counties, 

 Hitchcock. 



Note. — P. obtnsifolnts Mert. and Kock. Deut. Fl., I., 855 (1823), has 

 been reported from this State, but I have not seen it Plants so labeled 

 which I ha\'e seen are forms of another species. 



11. P. MAJOR [Rrics) Morong, Naiad. N. A., 41 (1893). 

 P. riitilus Auc. Amer. in part, non Schult.. Mant. III.. 

 362 (1827). 



P. ■pnsillns Linn., var. major Paries. Nov. 48 (1828). 

 P. conipressus Sm. Eng. Bot.. III.. 418 (1794 ). non Linn. 



