148 IOWA ACADEMY OF SCIENCES. 



The habitat is moist soil in woods and thickets, the time 

 of blooming being April, May, and June. In Iowa the 

 species is known to occur only in the southeastern portion. 

 The specimens in our collection were collected, April 24, 

 1896, in Jefferson county, Iowa, near Fairfield, The species 

 was frequent and apparently local. Professor Arthur has 

 reported the species from Lee county. 



Arthur, Proc. Davenport Acad. Nat. Sciences, Vol. 2, p. 126; Fitzpat- 

 rick, Proc. Iowa Acad. Sciences, Vol. 4, p. 108; Vol. 5, p. 156; Manual 

 Fl. Plants of Iowa, p. 123. 



MIMULUS L. Sp. PL 634. 1753. 



Stems 4-sided, prostrate or erect. Leaves simple, 

 opposite. Flowers peduncled, axillary, solitary. Calyx 

 5-angled, 5 toothed, the upper tooth the largest. Corolla 

 ringent, 2-lipped; the upper lip 2-lobed, the lower 3-lobed. 

 Stamens 4. Stigma 2-lobed. Capsule many-seeded. 



MiMULus RiNGENs L. Sp. PI. 634. 1753. 



Perennial; stem 1 — 3 feet high, glabrous; leaves lanceo- 

 late, sessile, acuminate, entire or serrate, base cordate 

 clasping; peduncles longer than the calyx; calyx teeth 

 nearly equal; corolla violet, sometimes white, throat 

 closed by prominent folds. 



This species ranges from Nova Scotia to Manitoba 

 and Nebraska, south to Virginia, Tennessee, and Texas. 

 Within our limits the species is common and occurs in 

 damp soil along streams, ditches, swamps or boggy places. 

 The flowers open from June until September. Type 

 locality: "Habitat in Virginia, Canada." 



Specimens in our collection are from Winneshiek, Alla- 

 makee, Clapton, Johnson, Decatur, Kinggold, and Kossuth 

 counties. We have observed the species in Dubuque 

 county. The State University herbarium has specimens 

 from Jones, Louisa, Des Moines, Lee, Calhoun, Dallas, 

 Dickinson, Story, and Lyon counties. Professor Bessey 

 reported the species from Story and Poweshiek counties; 

 Professor Pammel from Woodbury and Muscatine coun- 



