Penstemon pubescens. 89 



by repand denticulations or rather serratures near one-eighth of an 

 inch apart. Upper portion of the stem branching into a kind of pan- 

 nicle, supporting from fifteen to thirty showy pale-blue flowers. Co- 

 rolla labiate or rather personate, orifice of lower lip pubescent. Seed- 

 vessel glabrous, conical, crowned by the persistent style, and contain- 

 ing numerous minute seeds. Grows on the borders of open woods 

 and fields throughout the Union, common. Perennial, flowering in 

 July. 



A North American genus, to which the labours of Pursh and Nut- 

 tall hare added many new and beautiful species. The chief part of 

 these are natives of the plains of Missouri and about Teton river — 

 on the Arikarees and near Shian river — also near the Prairie du Chien, 

 Mississippi. The only species which grows hereabout, is the one now 

 figured. They are all herbaceous and perennial plants, and rarely 

 shrubby or suffructicose. 



The table represents the flowering half of the plant, as large as na- 

 ture. 



