86 MISC. PUBLICATION 42 3, U. S. DEPT. OF AGRICULTURE 



The Arizona specimen belongs to the form known as B. incanus 

 Shear. This species is distinguished from B. anomalies var. lanatipes 

 by the taller, more leafy culms and larger, stiffer panicles. 



10. Bromus purgans L., Sp. PL 76. 1753. 



Cochise and Pima Counties, 6,000 to 8,000 feet, moist woods and 

 rocky slopes. Massachusetts to Alberta, south to northern Florida 

 and Arizona. 



11. Bromus frondosus (Shear) Woot. and Standi., N. Mex. Col. Agr. 



Bui. 81: 144. 1912. 



Bromus porleri f rondo sus Shear, U. S. Dept. Agr., Div. Agrost. 

 Bui. 23: 37. 1900. 



Coconino, Greenlee, Maricopa, Cochise, and Pima Counties, 5,500 

 to 9,500 feet, rocky hillsides and pine woods. Utah, New Mexico, 

 and Arizona. 



12. Bromus racemosus L., Sp. PL ed. 2, 114. 1762. 



A weed along road at Grand Canyon (Coconino County). Waste 

 places, Washington to Idaho and Colorado, south to Arizona and 

 California, rare eastward; introduced from Europe. 



13. Bromus mollis L., Sp. PL ed. 2, 112. 1762. 



Roosevelt, Gila County {Peebles et al. 5210). A weed in fields and 

 waste places; introduced from Europe. 



14. Bromus commutatus Schrad., Fl. Germ. 353. 1806. 



A weedy species, at Flagstaff and Grand Canyon (Coconino County) . 

 Fields and waste places throughout the United States; introduced 

 from Europe. 



15. Bromus japonicus Thunb., Fl. Japon. 52. 1784. 



Joseph City, Navajo County (Brinkerhoff in 1936). Fields and 

 waste places throughout the United States; introduced from the Old 

 World. 



16. Bromus arvensis L., Sp. PL 77. 1753. 



Flagstaff (Coconino County). A weedy European species introduced 

 in a few scattered localities in the United States. 



17. Bromus rubens L., Cent. PL 1: 5. 1755; Amoen. Acad. 4: 265. 



1759. 

 Coconino, Mohave, Maricopa, and Pinal Counties, roadsides and 

 waste places. Washington to Arizona and California; introduced 

 from Europe. 



18. Bromus tectorum L., Sp. PL 77. 1753. 



Coconino and Yavapai Counties. Waste places throughout the 

 United States except in the southeast; introduced from Europe. 

 A form with glabrous spikelets is var. glabratus Spenner. 



19. Bromus rigidus Roth in Mag. Bot. Roem. and Ust. 10: 21. 1790. 

 Coconino, Maricopa, Cochise, and Pima Counties, a weed in waste 



places. British Columbia and Idaho to Arizona and California, rare 

 eastward; introduced from Europe. 



