178 UNIVERSITY OF MISSOURI STUDIES [326 



728. E. adenocladon (Haussk.) Rydb. [E. paniculatum aden- 

 ocladon Haussk.]. Glandular panicled willow-herb. 



At Boulder (Rydberg). 



South Dakota to Wyoming ; Colorado to Utah. 



297. GAYOPHYTTJM Juss. Gayophyte. 



729. G. intermedium Rydb. Intermediate gayophyte. 

 Very common throughout except in the high alpine region, 



5100-8600 (Eldora) ft. (Daniels, 159). Also at Caribou, 

 Ward, and between Sunshine and Ward (Rydberg). 

 Montana to Washington ; Colorado to California. 



298. OENOTHERA L. Evening primrose. 



730. 0. strigosa (Rydb.) Blankinship {Onagra strigosa'R.ydh.; 

 Oenothera biennis strigosa Rydb.]. Hairy evening prim- 

 rose. 



Common on the plains and foothills, 5100-8000 ft. (Daniels, 



137). 



Minnesota to Washington ; Missouri to New Mexico 

 and Utah. 



731. 0. Hookeri T. & G. [O. biennis hirsutissima Gray; Ona- 

 gra Hookeri (T. & G.) Small]. Hooker's evening prim- 

 rose. 



Rare on the mesas and foothills, the flowers turning pink 

 in withering, 5700-9000 ft. (Daniels, 562). 



Idaho to California; New Mexico to Mexico. 



299. ANOGRA Spach. White evening primrose. 



y2)^. A. albicaulis (Pursh) Britton [Oenothera albicaulis 

 Pursh; O. pinnatifida Nutt.]. White-stemmed white 

 evening primrose. 

 Common on the plains and mesas, and along the shore-sands 

 of Boulder creek, 5100-7000 ft. (Daniels, 141). 



North Dakota to Montana; Texas to New Mexico and 

 Sonora. 



