HITCHCOCK—MEXICAN GRASSES. 311 
HERBARIUM SPECIMENS FROM MEXIco: 
Nuevo Leon: Valley of Monterey, Pringle 2520. Monterey, edge of thicket 
along Rio San Juan, Hitchcock 5558. 
TaMAULIPAS: Tampico, Palmer 154 in 1910. 
14. Sporobolus trichodes nom. nov. 
Sporobolus capillaris Vasey, Contr. U.S. Nat. Herb. 1: 283. 1893, not Miq. 1851. 
Type locality, ‘‘Rio Blanco,’’ the type specimen collected in 1886 by Palmer 
(no. 512). 
Rance: Highlands of Mexico from Chihuahua to Michoacan. 
HERBARIUM SPECIMENS: 
CHIHUAHUA: Guerrero plains, Pringle 1426. 
Jauisco: Guadalajara, on rocks, side of Barranca de Oblatos, Hitchcock 7336; dry 
ledges, barranca, Pringle 3853. Rfo Blanco, Palmer 512 in 1886. Between 
Mezquitic and Monte Escobedo, Rose 2613. 
Micuoaca4n: Oeste del Zapote, near Morelia, Ars?ne in 1909. 
More os: Cuernavaca, hillside pasture, [itchcock 6819. 
15. Sporobolus atrovirens (H. B. K.) Kunth, Rév. Gram. 1: 68. 1829. 
Vilfa atrovirens H. B. K. Nov. Gen. & Sp. 1: 188. 1816. 
Type locality, ‘‘in valle Mexicana prope El Pefion del Marques.”’ 
RanGeE: Highlands of Mexico. 
HERBARIUM SPECIMENS FROM MExIco: 
Lower Ca.irornia: E] Taste, Brandegee in 1893 and 1902. 
Duranco: Durango, in gardens, fields, and mesquite thickets, Palmer 874 in 1896. 
Tamautipas: Victoria, Palmer 468 in 1907. 
San Luis Porosi: San Luis Potos{f, Parry & Palmer 937 in 1878, Schaffner 141. 
Las Candas, dry rocky hills, Pringle 3130. Cdrdenas, rocky hill, Hitchcock 
5771. 
QUERETARO: Querétaro, rocky hill, Hitchcock 5830, 5858. 
Hipauco: Pachuca, rocky hill, Hitchcock 6729. EE] Salto, hills, Pringle 11247. 
México: Toluca, open rocky place, Hitchcock 6909. Federal District, Bourgeau 
535, Rose & Hay 5470, 5971, Pringle 8727, 9609; open flat places among lava 
rocks, Hitchcock 5956. 
Puesia: San Luis Tultitlanapa, Purpus 3587; Tehuacdn, Rose & Hay 5923, 
cactus hill, Hitchcock 6080. 
Veracruz: Orizaba, Miiller 2092. ° 
Oaxaca: Oaxaca, rocky hill, Hitchcock 6145. 
YucatTAn: Izamal, open lands, Gaumer 313. 
16. Sporobolus argutus (Nees) Kunth, Enum. Pl. 1: 215. 1833. 
Vilfa arguta Nees, Agrost. Bras. 395. 1829. 
Type locality, ‘‘locis campestribus provinciae Piauhianae et ad flumen 8. Francisci 
prov. Minarum,”’ Brazil, the type specimen collected by Martius. This species 
appears to be the same as the one described by Fournier! under Vilfa grisebachiana. 
He cites two specimens from Orizaba that I have not seen. However, I consider the 
type of Fournier’s species to be Wright’s no. 3427a, which he cites, since he gives asa 
synonym, ‘‘Sporobolus purpurascens Griseb. part.’’ 
RanGE: Southwestern United States and the West Indies to South America. 
HERBARIUM SPECIMENS FROM MEXICO: 
Lower CaLirornia: San José del Cabo, Brandegee in 1899, Purpus 323. Santa 
Agueda, Palmer 224 in 1890. Carmen Island, Palmer 856 in 1890. 
1 Mex. Pl. 2: 98. 1886. 
