HITCHCOCK—MEXICAN GRASSES. 269 
2. Cenchrus pallidus Fourn. Mex. Pl. 2: 50. 1886. 
Type locality, ‘In locis ruderalis, Hacienda de Santa Cruz pr. Tehuantepec in 
prov. Oajacensi,’’ the type specimen collected by Liebmann (no. 465). 
RanGE: Southern Mexico to South America. 
HERBARIUM SPECIMENS FROM MEXICO: 
Couma: Jala, along railway, Hitchcock 7050. 
MoreLos: Yautepec, lava fields, Pringle 11219. 
GuERRERO: Balsas, low moist ground, edge of field, Hitchcock 7840. Iguala, by 
streams, Pringle 8394. 
Oaxaca: Hacienda de Santa Cruz, Liebmann 465. Tomellin, along track, 
Hitchcock 6217. Oaxaca, Galeotti 5880. 
8. Cenchrus viridis Spreng. Syst. Veg. 1: 301. 1825. 
Type locality, ‘“‘Guadalupa.”’ 
Rance: Florida to Central America and the West Indies. 
HERBARIUM SPECIMENS FROM MEXxIco: 
TamMautpas: Tampico, Palmer 155 in 1910. 
Cotma: Jala, along railway, Hitchcock 7008. Manzanillo, Palmer 1086 in 1890; 
base of rocky cliff near seashore, Hitchcock 7043. Paso del Rio, Emrick 6. 
PuEBia: Puebla, Nicolas in 1908. 
Veracruz: Veracruz, low place in sandy prairie, Hitchcock 6579. Orizaba, 
Seaton 51. Sanborn, Orcutt 3074. 
Oaxaca: Cuicatlin, Nelson 1653. 
Tasasco: Without locality, Rovirosa 477. 
YucatAn: Mérida. Schott 498. Progreso, Millspaugh 1682. 
4. Cenchrus echinatus L. Sp. Pl. 1050. 1753. 
Type locality given as ‘‘In Jamaica [et] Curassao,”’ the type specimen probably from 
the first-named island. 
Range: Warmer parts of America. 
HERBARIUM SPECIMENS FROM MEXICO: 
Lower CautirorNnia: Comondt, Brandegee in 1889. 
Sonora: Guaymas, Palmer in 1887. Alamos, Rose, Standley & Russell 13029. 
Hermosillo, valley of Rfo de Sonora, Rose, Standley & Russell 12495; in 
meadow along ditch, Hitchcock 3602. 
Curavanvua: Southwestern Chihuahua, Palmer 22 in 1885. 
SmvaLoa: Mazatlén, dry hill, Rose, Standley & Russell 13674. Rosario, Rose 3110. 
Duranco: Durango, dry ground, Hitchcock 7607; in graveyard and in mesquite 
bottoms, Palmer 880 in 1896. Torreén, weed in field, Hitchcock 7558. 
Coauuita: Monclova, Palmer in 1880. 
Nuevo Leon: Monterey, moist sand along river, Hitchcock 5556. 
Tamavuipas: Tampico, grass land along railway, Hitchcock 5786. Victoria, 
Palmer 83 in 1907. 
AGUASCALIENTES: Aguascalientes, weed, edge of field, Httchcock 7439; weed in 
cornfield, Hitchcock 7490. 
San Luis Potosi: Cardenas, irrigated field, Hitchcock 5751. 
Jaursco: Guadalajara, prairie near San Pedro, Hitchcock 7293. San Nicolas, 
cornfield, Hitchcock 7219. Zapotlin, railway right of way, Hitchcock 7124. 
La Junta, along railway, Hitchcock 7001. Colotlén, Rose 3603. Chapala, 
Rose & Painter 7623. 
Guanasuato: Irapuato, moist, sandy-clay plain, Hitchcock 7405. 
QuERETARO: Querétaro, weed in park, Hitchcock 5841. 
Cotma: Alzada, along railway, Hitchcock 7100. Manzanillo, base of rocky cliff 
near shore, Hitchcock 70434. 
Micnoacdn: Urudpan, along railway, Hitchcock 6988. 
