IOWA ACADEMY OF SCIENCES. 161 



Specimens in our herbarium are from Clayton, Dubuque, 

 Muscatine, Johnson, Jefferson, Van Buren, Appanoose, 

 Ringo^olfl, Tajdor and Sioux counties. We have observed 

 the species in Winneshiek, Allamakee, Decatur, and Ring- 

 gold counties. The State University herbarium has speci- 

 mens from Jones, Louisa, Henry, Lee, Story, Chickasaw, 

 Calhoun, Cerro Gordo, Fremont, and Emmet counties. 

 Professor Bessey reported the species from Poweshiek and 

 Floyd counties; Professor Pammel from Woodbury and 

 Lyon counties; Messrs. Nagel and Haupt from Scott 

 county: Professor Fink from Fayette county; and Mr. 

 Gow from Adair county. 



Arthur, Contr Fl. la. , p. 23; Bull Iowa Agr. Col., Nov. , 18S8, p 161; Nagel 

 and Haupt, Proc. Davenport Acad. Na'. Scieaces, Vol. 1, p. 160; Hitch- 

 cock. Trans. St. Louis Acad. Science, Vol. 5, p. 511; Pammel Proc. 

 Iowa Acad. Sciences, Vol. 3, p. 127; Fink, Proc. Iowa Acad. Sciences, Vol. 

 4, p. 97; Bessey, Fourth Bien. Rep. Agr. Col., p. 112; Halsted , Bull, State 

 Agr. Col., Feb., 1888, p. 43; Bull. Nov., 1886, p 51; Fitzpatrick, Proc. 

 Iowa Acad. Sciences, Vol, 5, p. 12^1 & p. 157; Vol. 6, p. 192; Manual Fl. 

 Plants of Iowa, p. 125; Gow, Proc. Iowa Acad Sciences, Vol. 8, p. 157; 

 Rigg, Notes on the Flora of Calhoun County, p. 22; Barnes, Reppert, and 

 Miller, Proc. Davenport Acad. Nat. Sciences, Vol. 8, p. 244. 



WULFENIA Jacq. Misc. 2M.j)LS. 17S1. 



J.SYNTHYRUS Benth. in D. C. Prodr. 10:454. 1846.] 



Ours a pubescent perennial herb, with ovate or orbicular 

 petioled basal leaves, sessile bract-like alternate cauline 

 leaves, and greenish yellow flowers in a terminal bracteate 

 spike. Calyx 4 — 5-parted; bracts oblong or linear. Co- 

 rolla usually 2-lobed, sometimes 3— 4-lobed. Stamens 

 usually 2, sometimes 4. Ovary 2 — 3-celled; style slender, 

 stigma capitate. Capsule compressed, emarginate, many- 

 seeded. 



WuLFEXiA HOUGHTONiANA (Bent/t.) Greene. 



Syuthyrus houghtoniana Benth. in D. C. Prodr. 10:454. 1846. 

 WuUenia houghtoniana Greene, Erythea, 2:83. 1894. 



Stem 1 — 2 feet high; basal leaves truncate or cordate at 

 the base, crenulate, 5 — 7-nerved; cauline leaves small, some- 

 what clasping, crenulate. 



