66 CONTEIBUTIONS FROM THE NATIONAL HEEBAEIUM. 



1. Stipa neomexicana (Thurb.) Scribn. U. S. Dept. Agr. Div. Agrost. Bull. 17: 



132. 1899. New Mexican porcupine grass. 



StiiM pennata neomexicana Thurb.; Vasey, U. S. Dect. Agr. Div. Bot. Bull. 122; 



no. 81. 1891. 

 Type locality: New Mexico. 

 Range: Colorado and Texas to California. 



New Mexico: North of Ramah; mountains north of Santa Rita; Albuquerque; 10 

 miles north of Santa Fe; Las Vegas Hot Springs; Silver City; Rio Mimbres; east of 

 Alamogordo; Arroyo Ranch. Dry hills, in the Upper Sonoran Zone. 



2. Stipa comata Trin. & Rupr. Mem. Acad. St. Petersb. VI. Sci. Nat. 5': 75. 1842. 

 Type locality: "Carlton House Fort ad fl. Saskatchawan." 



Range: Alaska and Alberta to California and New Mexico. 



New Mexico: Tunitcha Mountains; San Lorenzo; Chama; Horse Spring; Agua 

 Azul; Santa Fe; ToiTance; Clayton; Pecos; Raton Mountains; Nara Visa; Jewett 

 Gap; Little Creek. Plains and low hills, in the Upper Sonoran Zone. 



Both this and the preceding are valuable range grasses, especially because they 

 grow in the spring when other forage is scarce. Neither, however, reproduces well, 

 but either is soon killed by overstocking and replaced by the needle grasses. 



3. Stipa tweedyl Scribn. U. S. Dept. Agr. Div. Agrost. Bull. 11: 47. 1898. 

 Stipa comata intermedia Scribn. Bot. Gaz. 11: 171. 1886. not S. intermedia Trin. 



1842. 

 Type locality: Junction Butte, Yellowstone Park. 

 Range: "Washington and Alberta to Arizona and New Mexico. 

 New Mexico: Tunitcha Mountains {Standley 7676). Open slopes, in the Upper 

 Sonoran Zone. 



4. Stipa spartea Trin. Mem. Acad. St. Petersb. VI. Math. Phys. Nat. 1: 82. 1830. 

 Type locality: North America. 



Range: British America to Illinois and New Mexico. 



New Mexico: Sierra Grande {Standley 6223). Plains and piairies, in the Upper 

 Sonoran Zone. 



5. Stipa tenuissima Trin. Mem. Acad. St. Petersb. VI. Sci. Nat. 2': 36. 1836. 

 Type locality: Chile. 



Range: New Mexico and Arizona to Mexico and South America. 

 New Mexico: Socorro (PZanfc 44). 



6. Stipa fxmbriata H. B. K. Nov. Gen. & Sp. 1: 126. 1816. Pinyon grass. 

 Oryzopsis fimbriala Hemsl. Biol. Centr. Amer. Bot. 3: 538. 1885. 



Type locality: "Crescit in alta planitie Mexicana inter Burras et Guanaxuato; 

 item in scopulosis prope Mina de Villapando, inter 1050 et 1330 hexap." 



Range: Arizona to western Texas and southward. 



New Mexico: Bear Mountains, Burro Mountains, Organ Mountains, and Guada- 

 lupe IMountains and southward across the State. Dry hills, in the Upper Sonoran 

 and Transition zones. 



7. Stipa pringlei Scribn. Contr. U. S. Nat. Herb. 3: 54. 1892. 

 Type locality: Mexico or Arizona. 



Range: Southern New Mexico and Arizona to northern Mexico. 

 New Mexico: West Fork of the Gila {Metcalfe 557). 



8. Stipa eminens Cav. Icon. PI. 5: 42. pi. 467. f. 1. 1799. 

 Type locality: Near Chalma, Mexico. 



Range: New Mexico to southern Mexico. 



New Mexico: Kingston; Mangas Springs; Big Hatchet Mountains; Organ and 

 Dona Ana mountains. Upper Sonoran Zone. 



