REPORT OF THE STATE BOTANIST, I919 6t 



Oenothera rydbergii, nom. nov. 



Onagra strigosa Rybd., Oenothera strigosa Mackenzie & 

 Bush, Oenothera biennis var. canescens Torr. & Gray. Not 



Oenothera strigosa Willd., nor Oenothera canescens 

 r JTT. & Frem. 



A western species ranging from Minnesota to Kansas, Utah, 

 Washington and British Columbia. 



HeHotropium nuttallii, nom. nov. 



Lithospermam teneUum Nutt. Trans. Am. Phil. Soc, 5:188. 1837. 



Not L. ten ell urn Raf. Am. Mo. Mag., 4:i95- 1819. 

 HeHotropium tenellum (Nutt.) Torrey. 



A southern species ranging from Kentucky and Kansas to Ala- 

 bama and Texas. 



Lithospermum lutescens N. Coleman, Cat. PI. Grand Rapids, Mich. 



29. 1874. 



This name will have to replace Lithospermum lati- 

 folium Michx. 1803, which is invalidated by the earlier L. 

 1 a t i f 1 i u m Forsk, 1775. The species ranges from western New 

 York and Ontario to Minnesota, Virginia and Tennessee. 



BIVONEA Raf. Am. Mo. Mag., 2:268. 1818. 



The type is designated as B i v o n e a s t i m u 1 o s a (Michx.) 

 Raf., 1. c. (Jatropha stimulosa Michx.), and as such the 

 generic name clearly antedates Cnidoscolus Pohl (1827). 



Bivonea texana ( Muell. Arg. ) comb. nov. Jatropha texana 

 Muell.xArg., Cnidoscolus texana Small. 



CROPTILON Raf. Fl. Tellur., 2:47. 1837. 



The type is designated as Inula divaricata Nutt. and trans- 

 ferred to the genus as Croptilon divaricatum Raf., 1. c. 

 This is also the type of Isopappus Torr. & Gray (1841) and to it may 

 be added the only other species, viz : 



Croptilon hookerianum (T. & G.) comb. nov. Isopappus 

 hookerianus T. &G., Aplopappus hookerianus 

 A. Gray. 



HYPOLYTRUM Rich, in Pers. Syn., i 70. 1805. 

 Lipocarpha R. Br. App. Tuckey Exp. Congo 459. 1818. 



The type of Lipocarpha R. Br., is L. a r g e n t e a R. Br., 1. c. 477. 



This is the Hypolytrum senegalense Rich, the type of 

 Hypolytrum, but argentea is an older name. Hypolytrum also 



