Alyssum 



Cruciferae 



509 



Erysimum repandum L. 



Erysimum cheiranthoides L. 



Jan. 



Feb 



Mar. 



Apr 



May 



June 



July 



Aug 



Sept. 



Oct 



Nov. 



Dec. 



Miles 



50 



Map 1052 



Alyssum alyssoi'des L. 



hayfields, peppermint fields, etc. It is rather frequent on the spill banks 

 of dredged ditches and in railroad ballast. There are no reports for the 

 state south of the area shown on the map. 



Since none of the early authors reported this species, and the first report 

 was in 1915, and because its habitat and its abundance where it is found 

 suggest an adventive plant, I think that it has been introduced in Indiana. 



Newf. to the Pacific coast, southw. to N. J., Pa., Tenn., and Mo. ; found 

 also in Eu. 



3006. ALYSSUM [Tourn.] L. 



1. Alyssum alyssoides L. Small Alyssum. Map 1052. A plant of 

 sandy waste places and fallow fields. My Benton County collection is from 

 railroad ballast where it was abundant. 



Nat. of Eu. ; N. H., Ont. to Iowa, southw. to Mass. and N. J. ; also in 

 the far west and about seaports. 



3013. LOBULARIA Desv. 

 See excluded species no. 275, p. 1054. 



3015. BERTEROA DC. 



1. Berteroa incana (L.) DC. Hoary Alyssum. Map 1053. I have 

 specimens of this weed from two places in Elkhart County and my notes 

 say that in 1921 it was common in sandy soil along the roadside between 

 Bristol and Elkhart. I have a specimen collected in 1920 about 2 miles 

 northeast of Bristol and my notes say it was a common weed along the 

 roadside and in an adjacent, fallow field. Hansen (Proc. Indiana Acad. Sci. 

 1923: 215. 1924) says the County Agricultural Agent reported it as a 

 weed in a "run-down" farm in the same county. Hansen also reported a 

 small colony in West Lafayette but it was intentionally destroyed before it 



