98 



Festuceae 



Bromus 



30 



Map 125 



Bromus purgans L. 



50 



Map 126 



Bromus secalinus L. 



o ~1o 

 Map 129 



Bromus commutatus Schrad. 



Jan. 



Feb. 



Mar. 



Apr. 



May 



June 



July 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



Miles 



55 



Map 130 



Bromus japonicus Thunb. 



6. Bromus purgans L. Canada Brome. Map 125. Infrequent to fre- 

 quent throughout the state in dry places, rarely in wet places, in black and 

 white oak woods and less frequent in beech and sugar maple woods. 



Mass. to Alberta, southw. to Fla. and Ariz. 



6a. Bromus purgans f. laevivaginatus Wieg. (Rhodora 24: 92. 1922.) 



This is a form of the species that has all the sheaths glabrous except 

 sometimes the lowest one. 



7. Bromus secalinus L. Chess. Map 126. Frequent to common in all 

 parts of the state. It is found almost everywhere in cleared grounds except 

 in pastures. It is most abundant in wheatfields and waste grounds. In 

 Indiana it is called cheat. 



Nat. of Eu. ; now found throughout the U. S. 



8. Bromus brizaeformis Fisch. & Mey. Rattlesnake Chess. My only 

 specimen is from a waste place near the water works, Michigan City, in 

 La Porte County. Sometimes cultivated as an ornamental grass. 



