54 THE BIOLOGY OF HARDING COUNTY 



59. ONAGRACEAE (Evening Primrose Family) 



291 Anogra albicaulis (Pursh.) Brit. 



Numerous in fields, along roads, on bare clay of banks, and 

 frequent elsewhere on the steppe. 



292 Anogra Nnttallii (Sweet) A. Nels. 



Not uncommon on the steppe, fields, open woods of Little 

 Missouri, etc. 



[Anogra coronofolia (T. & G.) Brit. 

 Reported by Fromme.] 



293 Cliainacnerion angustifolium (L.) Scop. Forest Fire-weed. 

 Locally abundant in open valleys in the buttes. 



294 Hpilobiinn adcnocanlon Hausskn. Common Willow Herb. 

 Common along brooks. 



295 Epilobimn lineare Muhl. 



Plentiful in marshy spots along streams. 

 [Gayophytuni ramosissiiiuuii T. & G. 

 Reported by Fromme.] 



296 Ganra coccinea Bursh. 



One of the most abundant of the "weeds" on the steppe. 

 *297 Lai'an.ria flara A. Nels. 



Common on the sandy floodplain of the Grand River, near 

 Buffalo. Rare in badlands. 



298 MeriolLv serrnlata (Nutt.) Walp. Tooth-leaved Primrose. 

 Abundant on the steppe, particularly along roads. 



299 Oenothera laciniata Hill. 



Tolerably common on steppe near Govert, etc. 



300 Onagra biennis (L.) Scop. Eastern Evening Primrose. 



In valleys of Slim Buttes and on Little Missouri floodplain. 



301 Onagra striogosa Rydb. Common Evening Primrose. 

 Fairly frequent in all open situations. 



302 Pachylophus caespitosa (Nutt.) R'aimann. Gumbo Lily. 

 "Typical! Good specimen and a great find." Prof. Nelson. 

 Fairly abundant on bare heavy clay of badlands. 



303 Pachylophus macro glottis Rydb. 

 In badlands and on clay. 



Pachylophus montanus (Nutt.) A. Nels. 

 Bare clay, Short Pine Hills. June. 



