708 



Onagraceae 



Gaura 



50 



Map 1493 



Oenothera triloba L 



Railroad. Smith found it before this date well established in another sec- 

 tion of Indianapolis. Standley, in 1930, found it to be plentiful in vacant 

 lots in East Chicago, Lake County. He found it also in Porter County 

 along a railroad. Chas. M. Ek found it well established east of Peru in 

 Miami County. 



111., S. Dak. to Wash., southw. to Utah, Ariz., Tex., and Sonora, Mex. 



2. Gaura biennis L. Map 1495. Usually in the open in alluvial soil along 

 or near streams in open woods, in prairies, and more rarely in fallow fields 

 or on washed slopes. 



Conn., Que., Ont. to Minn., southw. to Ga., Ark., and Nebr. 



3. Gaura coccinea Nutt. ex Pursh. Map 1496. This species was 

 reported from Fayette County by Hessler, who found it along a railroad, 

 and said that it soon died out. Hill found it in Porter County along a 

 railroad near Crisman. I found it in 1930 in White County in ballast along 

 the railroad about a mile east of Idaville. This colony was first discovered 

 in 1929 by Mr. and Mrs. Walter Neff. Nieuwland found it to be well 

 established along a railroad near Lydick, St. Joseph County. 



Man. to Minn., Nebr., Mo., and Mex., westw. to Mont, and Ariz, and 

 into Mex. 



4. Gaura filipes Spach. Map 1497. I found this species in 1929 in an 

 open place on a sand hill in the edge of a black oak woods about a mile 

 southwest of Plainville, Daviess County. It was reported by Wilson as 

 being common in Hamilton and Marion Counties. It was also reported by 

 Phinney from the area of Delaware, Jay, Randolph, and Wayne Counties. 

 He says: "Fields and woods. Common." He also reports Gaura biennis 

 and says : "Fields and woods. Rare." Phinney used Gray's Manual, edition 

 5, for his determinations and in it the distinction between the two species 

 is not very clear and he may have confused them. I think both Phinney 

 and Wilson made wrong determinations but I am not able to account for 

 their errors. Munz (Bull. Torrey Bot. Club 65: 217. 1938) determined my 



