HITCHCOCK—-MEXICAN GRASSES. 841 
HERBARIUM SPECIMENS FROM MEXICO: 
Curauanva: Santa Eulalia Mountains, Wilkinson 346 in 1885; dry calcareous 
banks, Pringle 414. 
CoaHuILA: Saltillo, among rocks on hillsides, Palmer 404 in 1898. Monclova, 
Palmer 1358 in 1880. 
ZAcATECAS: Mountains back of Apizalaya, Hacienda de Cedros, Lloyd 254. 
14. Bouteloua sonorae Griffiths, Contr. U. S. Nat. Herb. 14: 389. f. 43. 1912. 
Type locality, ‘‘ Yaqui River,’’ Sonora, the type collected by Palmer in 1869. 
Rance: Northwestern Mexico. 
HeERBARIUM SPECIMENS: 
Sonora: Yaqui River, Palmer in 1869. Alamos, Palmer 751 in 1890. Guaymas, 
stony flat between hill and bay, Chase 5509; Hitchcock 3552. 
SrvaLoa: Mountains at headwaters of Mazatlin River, Wright 1322. Imala, 
Palmer 1761 in 1891. 
15. Bouteloua rothrockii Vasey, Contr. U. S. Nat, Herb. 1: 268. 1893. 
Type locality, ‘Cottonwood, Arizona.” 
RanGE: Utah to Sinaloa. 
HERBARIUM SPECIMENS FROM Mexico: 
Sonora: Near Cocospora Ranch, Griffiths 6796. Hermosillo, meadow, Hitchcock 
3583; dry soil, Hitchcock 3536. Llano, along railway, Hitchcock 3523. Agia- 
bampo, Palmer 791 in 1890. Guaymas, Palmer 166 and 204 in 1887. 
Smvatoa: Culiacdn, Brandegee 11 in 1904; in large patches in the ravines, Palmer 
1543 in 1891. Topolobampo, in open bottom lands, Palmer 244 and 235 
in 1897. 
16. Bouteloua karwinskii (Fourn.) Griffiths, Contr. U.S. Nat. Herb. 14: 394. 1912. 
Chondrosium karwinskii Fourn. Mex. Pl. 2: 137. 1886. 
Type locality, *‘Cafion de las Minas et Victoria.” 
Rance: Central Mexico. 
HERBARIUM SPECIMENS: 
Zacatecas: Hacienda de Cedros, Lloyd 183. Zacatecas, low grassy land, Lloyd 
170. 
17. Bouteloua trifida Thurb. in S. Wats. Proc. Amer. Acad. 18: 177. 1883. 
Bouteloua trinii (Fourn.) Griffiths, Contr. U. S. Nat. Herb. 14: 387. 1912. (The 
author takes 1881 as the date of publication of Fournier’s work. See footnote, 
page 181). 
Type locality, ‘‘Monclova, Coahuila.” 
Rance: Southwestern United States to central Mexico. 
HERBARIUM SPECIMENS FROM MEXICO: 
Curmmuanua: Santa Eulalia Plains, Wilkinson in 1885. Chihuahua, dry gravelly 
soil, hills and plains, Pringle 412. 
CoAHUILA: Saltillo, hillsides, Palmer 402 in 1898, 522 in 1905; dry mesa Hitch- 
cock 5639, 5648; mountains, Palmer 1355 in 1880. 
Nuevo Leon: Monterey, agave field, Hitchcock 5531; along railway, Hitchcock 
5532; dry hills and mesas, Pringle 1974, 11735. 
TaMAULIPAS: Victoria, Palmer 370 and 552 in 1907. 
San Luis Potosi: Minas de San Rafael, Purpus 5008. San Luis Potosi, Parry & 
Palmer 945 in 1878. 
18. Bouteloua acuminata (Fourn.) Griffiths, Contr. U.S. Nat. Herb. 14: 406. 1912. 
Atheropogon acuminatus Fourn. Mex. Pl. 2: 139. 1886. 
Type locality, ‘‘Mirador” and ‘Potrero de Consoquitla” cited. 
RanGE: Central Mexico. 
HERBARIUM SPECIMEN: 
Sinatoa: Lodicgo, in large bunches on mountain sides, Palmer 1655 in 1891. 
