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HITCHCOCK—MEXICAN GRASSES. 339 
7. Bouteloua stolonifera Scribn. Proc. Acad. Phila, 1891: 302. 1892. 
Type locality, ‘Plains, State of Zacatecas, between San Luis Potosi and Aguasca- 
lientes,”’ the type specimen collected by Pringle (no. 3174). 
Rance: Highlands of central Mexico. 
HERBARIUM SPECIMENS: 
Zacatecas: La Honda Station, plains, Pringle 3174. Cedros, making turf in 
plains, Lloyd 104. 
San Luts Porosi: San Luis Potosi, Schaffner 172. Alonzo, Griffiths 8054. 
Hiparco: Pachuca, rocky hill, Hitchcock 6734. 
Mexico: Metepec, dry mesas, Pringle 13241. 
8. Bouteloua scorpioides Lag. Gen. & Sp. Nov. 5, 1816. 
Type locality, ‘‘N. Hisp.’’ [Mexico]. 
Range: Highlands from Chihuahua to Orizaba. 
HERBARIUM SPECIMENS: 
CutTHuanua: Encinillas, Griffiths 8527. 
ZacarEcas: Cedros, making turf in low places of plain, Lloyd 105. 
San Luis Porosi: San Luis Potosi, Schaffner 168, 
Hmauco: Pachuca, rocky hill, Hitchcock 6721. 
México: Campero, Griffiths 8460, 8461, 8462. Federal District, Orcutt 4107, 
Pringle 8820. ; 
Pursta: Esperanza, barren hills, Pittier 422; rocky hill, Hitchcock 6477. Chal- 
chicomula, [Titchcock 6272. 
9. Bouteloua hirsuta Lag. Var. Cienc, 21: 141. 1805. 
Type locality, Mexico. 
Ranae: From Illinois and South Dakota to the Rocky Mountains and southward to 
southern Mexico; also in Florida. 
HERBARIUM SPECIMENS FROM MExIco: 
Lower Canmrornra: Cape Region Mountains, Brandegee in 1899. Sierra de 
la Laguna, Brandegee in 1890. 
Sonora: Near Cocospora Ranch, Griffiths 6792. 
Cumuanva: Chihuahua, hills and plains, Pringle 409; rocky hill, Hitchock 7795. 
Santa Eulalia Mountains, Wilkinson 347. Between Colonia Garcia and 
Pratt’s ranch below Pacheco, Nelson 6246. 
Duranco: Durango, dry ground, Hitchcock 7604; stony hillsides, Palmer 870 
in 1896. 
Coanuia: Saltillo, in low places on mesas, Palmer 405 in 1898, 1357 in 1880, 
Trpic: Between Concepcién and Acaponeta, Rose 1904. Near Acaponeta, 
Rose 3298. 
ZACATECAS: Zacatecas, gulch in dry sterile hills, Hitchcock 7501. 
San Luts Porosi: San Luis Potosi, Schaffner 186, Parry & Palmer 943 in 1878. 
Las Candas, prairie, [Hitchcock 5753. 
Jatisco: Road between Huejuquilla and Mezquitic, Rose 2588. Zapotlin, rail- 
way right of way, [Hitchcock 7113. 
Hrpatao: Sierra de Pachuca, Rose, Painter & Rose 8752. Tula, hills, Pringle 
11215. 
FrpErAL District: Schaffner in 1875; Rose, Painter & Rose 9497. 
Moreuos: Cuernavaca, Rose & Rose 11055. 
Oaxaca: San Pablo Huitzo, Conzatti 2013. > 
10. Bouteloua hirticulmis Scribn. U. 8. Dept. Agr. Div. Agrost. Circ. 30: 4. 1901. 
Type locality, ‘Sierra de San Francisquito Mountains, Lower California.” 
RanGeE: Pacific slope, Lower California to Chiapas. 
