234 IOWA ACADEMY OF SCIENCES. 



MALVACE^. 



Malva L. 



375. ^f. s///r(\sfrls L. High Mallow. Streets of Esther- 



ville; adventive from Europe. 



376. M. r()ftni(Iif()Ii(( L. Running Mallow. Streets of 



Estherville; introduced from Europe. 



Hibiscus L. 



377. II. frioiunH L. Bladder Ketmia. V^enice Mallow. 



Rarely escaped from cultivation; a native of 

 southern Europe. 



hypericace.e. 



Hypericum L. 



378. H. caiKidciise L. Rare in wet places. 



Triadenum Raf. 



379. T. rin/liilcHUi (L.) Raf. {Eloden anitpanuh/fa 



Pursh.) Common in marshes. 



CI STAGED. 



Helianthemum Pers. 



380. //. ainadeiise (L.) Michx. Frostweed. Very rare 



on gravelly banks. 



VIOLACE^. 



Viola L. 



3Sl. r. pe(]((f[fj(](i Don. (T^ del ph in [folia Nutt.) 



Prairie Violet. Common on dry prairies. 

 382'. T^ ohIifjiKf Hill. ( C citculJata Ait.) Meadow 



Violet. Very common in low ground; variable. 



383. v. pubesceiis Ait. Yellow Violet. Common in 



woods. 



lythrace^. 



Lythrum L. 



384. L. a/afiim Pursh. Very common in low ground. 



