325] FLORA OF COLUMBIA AND VICINITY 183 



674a. O. biennis grandiflora (Ait.) Lindl. 



With the type, of which it is a stout and large-flowered 

 form. 



Range of the type. 



675. O. strigosa Rydb. \^0c7wthcra bicrmis strigosa {Kydh.) 

 Mack. & Bush]. Hairy evening primrose. 



Fields in dry soil. 



South Dakota to Montana; Missouri to Nebraska. 



269. OENOTHERA L. ^RAIMANNIA Rose]. 



676. O. sinuata L. \_0. laciniata Hill: R. laciniata (Hill) 

 Rose]. 



Meadows and waste places; infrequent. 

 Vermont to Michigan and South Dakota; Florida to 

 Texas, Mexico and South America. 



270. XYLOPLEURUM Spach [HARTMAN- 

 NIA Spach : OENOTHERA L.]. 



677. X. speciosum (Nutt.). Raim. \H. speciosa (Nutt.) 

 Small: . speciosa "Hxitt^ Showy primrose. 



Along the Missouri, especially about railroads. 



South Carolina to Michigan and Kansas; Georgia to 

 Arizona and Mexico: naturalized in the eastern part of its 

 range. 



271. MERIOLIX Raf. lOENOTHERA L.]. 



678. M. serrulata (Nutt.) Walp. {0. serrulata Nutt.]. 

 Along the railroad near Rocheport. 



Wisconsin and Minnesota to Manitoba; Missouri to 

 Texas and New Mexico. 



272. GAURA L. 



679. G. biennis L. 



Roadsides between Hallsville and the Pinnacles; also 

 along Hinkson creek south. 



Quebec to Minnesota and Nebr.aska; Georgia to 

 Arkansas. 



