WOOTON AND STANDLEY FLORA OF NEW MEXICO. 77 



One of the important range grasses of the State, on the plains. It is able to endure 

 considerable amounts of alkali. 



8. Sporobolus wrightii Munro; Scribn. Bull. Torrey Club 9: 103. 1882. Sacaton. 

 Type locality: Near Pantano, Arizona. 



Range: Western Texas to southern Colorado and northern Mexico. 



New Mexico: Socorro; Fort Bayard; Dog Spring; Deming; Mangas Springs; Gila 

 Hot Springs; Las Vegas; Buchanan; Carrizozo; Carlsbad. Dry liillsand plains, in the 

 Upper Sonoran Zone. 



An important range grass. Both this and the preceding are often cut for hay. 



9. SiJorobolus nealleyi Vasey, Bull. Torrey Club 15: 49. 1888, name only; Contr. 



U. S. Nat. Herb. 1: 57. 1890. Nealley's dropseed. 



Type locality: Brazos Santiago, Texas. 



Range: Western Texas to New Mexico. 



New Mexico: Pecos; near Suwanee; Las Cruces; White Sands; Round Mountain; 

 plains 35 miles south of Torrance; Roswell. Dry plains and hills, in the Lower and 

 Upper Sonoran zones. 



10. Sporobolus cryptandrus (Torr.) A. Gray, Man. 576. 1848. 

 Agrostis cryptandrus Torr. Ann. Lye. N. Y. 1: 151. 1824. 

 Type locality: "On the Canadian River," Colorado? 

 Range: Washington and Maine to Arizona and Texas. 



New Mexico: Common throughout the State. Plains and dry slopes, in the Lower 

 and Upper Sonoran zones. 



11. Sporobolus asper (Michx.) Kunth, Enum. PI. 1: 210. 1833. 

 Agrostis asper Michx. Fl. Bor. Amer. 1: 52. 1803. 



Type locality: "Habitat in collibus rupibusque regionis IlUnoensis." 

 Range: Minnesota and Nebraska to New England, south to Texas and Florida. 

 New Mexico: Pecos (Standley 5313). Open slopes, in the Upper Sonoran Zone. 



12. Sporobolus flexuosus (Thurb.) Rydb. Bull. Torrey Club 32: 601. 1905. 

 Sporobolus cryptandrus flexuosus Thurb. Contr. U, S. Nat. Herb. 3: 62. 1892. 

 Type locality: "Dry western plains, Colorado, New Mexico, Arizona to Texas." 

 Range: Nevada to Texas and Mexico. 



New Mexico: Carrizo Mountains; Farmington; Socorro; Albuquerque; Deming; 

 Tortugas Mountain; White Sands; Mesilla Valley; Organ Mountains. Sandy soil, in 

 the Lower and Upper Sonoran zones. 



33. POLYPOGON Desf. Beardgrass. 



Mostly annuals with decumbent or erect stems, flat leaves, and densely flowered 

 terminal panicles; spikelets 1-flowered, hermaphrodite; glumes nearly equal, usually 

 broader above, entire or 2-lobed, awned; lemma much smaller than the glumes, thin, 

 hyaline, entire, emarginate, or bifid, awned, the awn slender, straight, or geniculate 

 and twisted below; stamens 1 to 3; styles short, distinct; stigmas plumose; gi'ain fiee. 



key to the species. 



Glumes notched at the apex; awns very long, concealing the 



spikelets 1. P. monspeliensis. 



Glumes attenuate at the apex; awns short, not concealing the 



spikelets 2. P. littoralis. 



1. Polypogon monspeliensis (L.) Desf. Fl. Atlant. 1: 67. 1800. 

 Alopecurus monspeliensis L. Sp. PL 61. 1753. 

 Type locality: "Habitat MonspeUi." 



