FLOWERING PLANTS AND FERNS OF ARIZONA 111 



2. Agrostis alba L., Sp. PL 63. 1753; ed. 2, 93. 1762. 



Apache, Coconino, Yavapai, and Greenlee Counties, moist ground 

 and waste places. Throughout the cooler regions of North America; 

 apparently introduced from the Old World. 



3. Agrostis palustrisHuds.,Fl. Angl. 27. 1762. 



Yavapai, Gila, and Pinal Counties, in damp places along streams 

 and ditches, June to August, introduced in Arizona. Newfoundland 

 to Maryland and British Columbia, south to Arizona and northern 

 California; Eurasia. 



4. Agrostis scabra Willd., Sp. PI. 370. 1797. 



Apache, Coconino, Yavapai, Graham, Cochise, and Pima Counties, 

 moist ground up to 8,500 feet, May to September. Newfoundland to 

 Alaska, south to Maryland, Illinois, Nebraska, New Mexico, Arizona, 

 and California, rarely in the Southeastern States. 



This plant has been referred by authors to A. hiemalis, which is a 

 distinct species confined to the Southeastern States. 



5. Agrostis exarata Trim, Gram. Unifl. 207. 1824. 



Agrostis filiculmis M. E. Jones, Contrib. West. Bot. 14 : 13. 1912. 



Apache, Coconino, Yavapai, Graham, Cochise, and Pima Counties, 

 moist ground up to 7,000 feet, June to September. Nebraska to 

 Alberta and Alaska, south to California and Mexico. 



35. ALOPECURUS. Foxtail 



Semiaquatic annuals or perennials with flat leaf blades and soft, 

 spikelike panicles; glumes equal, united at base, ciliate on the keel; 

 lemma about as long as the glumes, with margins united at base, 

 bearing from below the middle a straight or geniculate, included or 

 exserted awn ; palea wanting. 



All of the species are palatable and nutritious, but these grasses are 

 not common enough in Arizona to be important. 



Key to the species 

 I. Awns straight, included or only slightly longer than the glumes ; plants perennial. 



1. A. AEQUAL1S. 



1. Awns geniculate, twisted below, much longer than the glumes (2). 



2. Plants perennial; anthers 1.5 mm. long 2. A. geniculates. 



2. Plants annual; anthers about 0.5 mm. long 3. A. carolinianus. 



1. Alopecurus aequalis Sobol., Fl. Petrop. 16. 1799. 



Alopecurus fulvus J. E. Smith in Sowerby, Ens;. Bot. 21 : pi. 1407. 

 1805. 



Apache, Coconino, and Yavapai Counties, 5,000 to 9,000 feet, bogs 

 and wet ground, June to August. Greenland to Alaska, south to 

 Pennsylvania, Kansas, New Mexico, Arizona, and California; Eurasia. 



2. Alopecurus geniculatus L, Sp. PL 60. 1753. 



Apache, Coconino, and Pima Counties, 2,000 to 9,000 feet, marshes 

 and wet ground, July to September. Newfoundland to British 

 Columbia, south to Virginia, Arizona, and California ; Eurasia. 



.'NCTH 



