162 IOWA ACADEMY OF SCIENCES. 



This species is found in Indiana, Illinois, Michigan, Min- 

 nesota, Iowa, and Missouri. It occurs on dry prairies and 

 in open woods, bloominp^ during the months of May, June, 

 and July. Dr. Parry in Owen's Report writes concerning 

 this species: "A^bundant on the high table-land overlook- 

 ing the town of Stillwater, St. Croix. This northwestern 

 plant, so unique in its botanical features, is no less inter- 

 esting in its association with the name of the lamented 

 Houghton." 



Our Iowa specimen was collected in Muscatine county 

 by Ferd. Reppert, June, 1897. Mr. Reppert reports that 

 the species is not rare in the sandy open woods in the 

 Cedar river region. Prof. Fink on the basis of a specimen 

 in Dr. Parker's collection reports the species as rare on 

 prairies in Fayette county. Messrs. Nageland Haupt men- 

 tion the species in their list of the Phaenogamous plants 

 collected in the vicinity of Davenport. Messrs. Barnes, 

 Reppert, and Miller do not mention Davenport or Scott 

 county in their flora as a locality for this species. 



Arthur Contr. Fl.Ia., p. 22; Nagel and Haupt, Proc. Davenport Acad. 

 Nat. Sciences, Vol. 1, p. IhO; Fink, Proc. Iowa Acad. Sciences, Vol.4, p. 

 97; Barnes, Reppert, and Miller, Proc. Davenport Acad. Nat. Sciences, 

 Vol. 8, p. 243; Fitzpatrick, Manual Flowering Plants of Iowa, p 125; Brit- 

 ton and Brown, Ills. Flora, Vol 3, p. 166; Gray's Manual, Ed. 6, p. 386;. 

 Bull. Torr. Bot. Club, Vol. 6, p. 209. 



DASYSTOMA Raf. Journ. Phys. 89:99. 1819. 



Erect annual or perennial herbs, partly parasitic on the 

 roots of other plants, with opposite or alternate entire 

 incised or pinnatiHd leaves, and large showy yellow flow- 

 ers, in terminal mostly leafy-bracted racemes or panicles. 

 Calyx campanulate, 5-lobed. Corolla funnelform or 

 campanulate-funnelform, the tube woolly or pubescent 

 within, the limb 5-lobed. Stamens 4, didynamous, included, 

 villous or pubescent; anthers similar, their sacs separate,, 

 awned at the base. Capsule oblong, acute, many-seeded. 



Plants glabrous, cinerous or puberulent; corollas glabrous without. 

 Cinerous-puberulenc. 



Leaves thin, all pinnatifid. D. ffrindi flora. 



Leaves thickish, entire, dentate or the lower pinnatifid. D. flavin 



