IOWA ACADEMY OF SCIENCES. 145 



Pentstemon gracilis Nuft. Gen. 2:52. 1818. 



Stem 6 — 18 inches high, glabrous or nearl}^ so below; 

 basal and lower leaves linear-oblong or spatulate, denticu- 

 late or entire, the upper linear-lanceolate, or lanceolate, 

 denticulate; inflorescence glandular-pubescent; corolla 

 purple. 



The range of this species as given by Britton and 

 Brown in their Illustrated Flora is Manitoba to Minnesota 

 and Missouri, west to the Northwest Territory and Col- 

 orado. Nuttall gave the type locality as: "Hab. From the 

 Arikarees to Fort Mandan, in depressed soils." The species 

 occurs on moist prairies and blooms in May, June, and 

 July. In Iowa the only county known where this species 

 occurs is Lyon county, where it is said to be infrequent. 

 It was first collected and reported by Professor Shimek. 



Shimek, Proc. Iowa Acad. Sciences, Vol. 4, p. 74; Iowa Geol. Sur., 

 Vol. 10, p. 173; Fitzpatrick, Manual Fl. Plants of Iowa, p. 122. 



Pentstemon grandiflorus Nittfa/l in Fraser's Cat. 181B. 



Penfs(emon dradduri Pavsh, PI. Am. Sept. 2:73S. 1814. 



Stem 2 — 3 feet high, glabrous, glaucous; cauline leaves 

 oblong or oval; thick, entire, clasping or perfoliate, the 

 basal obovate; corolla large, campanulate, nearly regular, 

 lavender-blue; sterile filament incurved at the apex, 

 puberulent. 



This species is found on prairies in Illinois, Iowa, Min- 

 nesota, South Dakota, and Kansas. The flowers appear in 

 June, July, and August. Type locality: "Collected a con- 

 siderable distance up the Missouri." 



Specimens in our herbarium are from Muscatine, Fre- 

 mont, and Lyon counties. Professor Bessey reported the 

 species from Dubuque county and Professor Pammel from 

 Woodbury county. The State University has specimens 

 from Dubuque, Delaware, Louisa, Blackhawk, Pottawatta- 

 mie, and Lyon counties. 



Arthur, Contr. Fl. la ,p. 22; Pammel, Proc. Iowa Acad. Sciences, Vol. 

 1, Pt. 2, p. 90; Vol. 3, p. 127; Shimek, Proc. Iowa Acad. Sciences, Vol. 

 4, p. 74; Bull. Lab. Nat. Hist., S. U. I., Vol. 3, p. 207; Iowa Geol. Sur., 



