76 CONTKIBUTIONS FROM THE NATIONAL HERBARIUM. 



1. Sporobolus giganteus Nash, Bull. Torrey Club 25: 88. 1898. 



Sandhill dropseed. 



Sporoboliis cryptandrns giganteus Jonea, Contr. West. Bot. 14: 11. 1912. 



Type locality: On the White Sands, New Mexico. Tj^pe collected by Wooton 

 (no. 394). 



Range: Southern New Mexico. 



New Mexico: Gila Hot Springs; Socorro; Sabinal; Mesilla Valley; White Sands; 

 south of Carrizozo; Arroyo Ranch. Sandhills, in the Lower Sonoran Zone. 



2. Sporobolus strictus (Scribn.) Merr. U. S. Dept. Agr. Div. Agrost. Circ. 32: 6. 



1901. 

 Sporobolus cryptandrns strictus Scribn. Bull. Torrey Club 9: 103. 1882. 

 Type locality: Banks of the Rillita, near Camp Lowell, Arizona. 

 Range: Colorado to Arizona and Mexico. 



New Mexico: Throughout the State except in the southeastern corner. Dry hills 

 and plains, in the Lower and Upper Sonoran zones. 



3. Sporobolus conlusus (Fourn.) Vasey, Bull. Torrey Club 15: 293. 1888. 

 Vilfa confusa Fourn. Mex. PI. 2: 101. 1881. 



Type locality: "In devexis arenosis mentis ignivomi Jorullo," Mexico. 



Range: Washington to Texas and Mexico. 



New Mexico: Ensenada; Santa Fe and Las Vegas mountains; Mogollon Moun- 

 tains; Mangas Springs; Black Range; San Luis Mountains; Animas Valley; Tortu- 

 gas Mountain; Organ Mountains; \Miite Mountains. Dry hills and canyons, in the 

 Lower and Upper Sonoran zones. 



4. Sporobolus auriculatus Vasey, Contr. U. S. Nat. Herb. 3: 64. 1892. 

 Type locality: Texas. 



Range: Western Texas and southern New Mexico. 



New Mexico: Albuquerque; Cross L Ranch; Farmington; Chama; Deming; 

 Socorro; Carrizozo; White Sands; Chosa Springs; Lake Arthur; Hope; Roswell; Dona 

 Ana Mountains. Plains, in the Lower and Upper Sonoran zones. 



5. Sporobolus asperifolius (Nees & Mey.) Thurber in S. Wats. Bot. Calif. 2: 269. 



1880. 



Vilfa aspmfolia Nees & Mey. M^m. Acad. St. Petersb. VI. Sci. Nat. 4^: 95. 1840. 



Type locality: "Chile; Rio Mayno; Copiapo." 



Range: British America to California, New Mexico, and Missouri; also in South 

 America. 



New Mexico: Albuquerque; Carrizo Mountains; Cedar Hill; Dulce; Pecos; Ala- 

 millo; Kingston; Mangas Springs; Mesilla Valley; Roswell; White Sands; Dona Ana 

 Mountains. Valleys and plains, often in alkaline soil, in the Lower and Upper 

 Sonoran zones. 



6. Sporobolus texanus Vasey, Contr. U. S. Nat. Herb. 1: 57. 1890. 

 Type locality: Screw Bean, Presidio Coimty, Texas. 



Range: Western Texas and southern New Mexico. 



New Mexico: Carlsbad; along the Pecos near Roswell. Dry plains. 



7. Sporobolus airoides Torr. U. S. Rep. Expl. Miss. Pacif. 7^: 21. 1856. 



Bunchgrabs. 



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



Type locality: "On the branches of the Arkansas, near the Rocky Mountains," 

 Colorado. 



Range: Washington and Nebraska to California and Now Mexico. 



New Mexico: Cariizo MounUxins; Aztec; McCarthys Station; Santa Fe; Ojo 

 Caliente; Algodones; Belen; Zuni; Socorro; Cliff; Mangas Springs; Mesilla Valley; 

 White Sands. Open plains and dry slopes, in the Lower and Upper Sonoran zones. 



