FLOWERING PLANTS AND FERNS OF ARIZONA 119 



Muhlenbergia gracilis var. major Vasey in Rothr., U. S. 

 Survey West 100th Merid. Rpt. 6: 284. 1878. 



Apache, Coconino, Yavapai, Graham, Cochise, and Santa Cruz 

 Counties, 5,000 to 8,500 feet, dry mesas and rocky hills, August 

 and September. Montana and central California to western Texas, 

 Arizona, and southern Mexico. 



25. Muhlenbergia virescens (H. B. K.) Kunth, Rev. Gram. 1: 64. 



1829. 



Podosaemum virescens H. B. K., Xov. Gen. et Sp. 1: 132. 1815. 



Coconino, Gila, Cochise, and Pima Counties, 5,000 to 8,000 feet. 

 rocky hills and mesas, April to June. New Mexico and Arizona to 

 Central Mexico. 



26. Muhlenbergia polycaulis Scribn., Torrev Bot, Club Bui. 38: 327. 



1911. 

 Santa Catalina and Santa Rita Mountains (Pima County), on 

 rocky slopes. Texas, southern Arizona, and Mexico. 



27. Muhlenbergia monticola Buckl., Acad. Xat. Sci. Phila. Proc. 



1862: 91. 1862. 

 Cochise and Pima Counties, 6.000 to 8,000 feet, rocky hills and 

 canyons, August to October. Texas to Arizona and central Mexico. 



28. Muhlenbergia pauciflora Buckl., Acad. Xat. Sci. Phila. Proc. 



1862: 91. 1862. 

 Coconino, Yavapai, Graham, Cochise, Santa Cruz, and Pima 

 Counties, 4,000 to 7,000 feet, dry rocky slopes and canyons, August 

 to October. Western Texas to Colorado, Arizona, and northern 

 Mexico. 



29. Muhlenbergia porteri Scribn. in Beal, Grasses Xorth Amer. 



2: 259. 1896. 

 Navajo County to Mohave County, south to Cochise, Pima, and 

 Yuma Counties, 1,800 to 5,000 feet, mesas and rocky slopes, August 

 to October. Colorado and Nevada to western Texas, Arizona, Cali- 

 fornia, and northern Mexico. 



30. Muhlenbergia arizonica Scribn., Torrev Bot. Club Bui. 15: 8. 



1888. 

 Cochise, Pima, and Santa Cruz Counties, 3,500 to 5,500 feet, dry 

 rocky hills and open woods, August to October, type from Arizona 

 near the Mexican boundary (Pringle). Arizona and northwestern 

 Mexico. 



31. Muhlenbergia torreyi (Kunth) Hitchc. in Bush, Amer. Midland 



Xat. 6: 84. 1919. 



Agrostis torreyi Kunth, Rev. Gram. 1: Sup. XVII. 1S30. 

 Muhlenbergia gracillima Torr., U. S. Rpt. Expl. Miss. Pacif. 

 4: 155. 1856. 



Peach Springs (Mohave County), dry open ground around Prescott 

 (Yavapai County), Willow Spring (Apache County), July to Septem- 

 ber. Western Kansas and Colorado to Texas and Arizona. 



