270 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
HERBARIUM SPECIMENS FROM Mexico—Continued. 
Puesia: Tehuacdn, bottom-land field, Hitchcock 6076. 
VeERaAcRuUz: Orizaba, Bourgeau 3140. Veracruz, sandy prairie, Hitchcock 6556; 
sandy beach, Hitchcock 6571. Jalapa, along railway, Hitchcock 6629. Mirador, 
Ross 644. 
MoreELos: Cuernavaca, weed along railway, Hitchcock 6876; weed in garden, 
Mitchcock 6852. 
GUERRERO: Santa Fé, along railway, Hitchcock 6690. Balsas, open woods on hill, 
Hitchcock 6787. 
Oaxaca: Oaxaca, sandy soil along railway, Hitchcock 6127. Tomellin, rocky 
bank by river, Hitchcock 6198; weed in cornfield, Hitchcock 6247. 
Yucatdn: Progreso, Millspaugh 1698. 
5. Cenchrus insularis Scribn. in Millsp. Field Mus. Bot. 2: 26. 1900. 
Type locality, ‘‘Pajaros Island, Alacran Shoals,”’ the type specimen collected by 
Millspaugh (Pl. Ute. no. 1759). 
Rance: Pacific slope of Mexico and off the coast of Yucatan. 
HERBARIUM SPECIMENS FROM MEXICO: 
Lower Cauirornia: San José del Cabo, Purpus 320. 
Sonora: Yaqui River, Palmer 12 in 1869. Alamos, in an orchard, Rose, Standley 
& Russell 13019. 
Srvatoa: Topolobampo, Rose, Standley d+ Russell 13280. Fuerte, in river valley, 
Rose, Standley & Russell 13561. 
Jauisco: Guadalajara, Safford 1390. 
QUERETARO: Querétaro, irrigation ditch, Hitchcock 5861. 
Yucatdn: Alacrin Shoals, Millspaugh Pl. Uto. 1759. 
6. Cenchrus pauciflorus Benth. Bot. Voy. Sulph. 56. 1840. 
Type locality, ‘“‘Bay of Magdalena.”’ 
RANGE: Western Mexico. 
HERBARIUM SPECIMENS: 
Lower CALIFORNIA: San José del Cabo, Brandegee in 1890. Boca de las Animas, 
Brandegee in 1889. 
Couma: Armerfa, along railway, Hitchcock 7047. 
7. Cenchrus carolinianus Walt. Fl. Carol. 79. 1788. 
Type locality, presumably South Carolina. 
Rance: Northern United States to Central America and the West Indies. 
HERBARIUM SPECIMENS FROM MEXICO: 
Lower CALIFoRNIA: Santa Agueda, Palmer 220 in 1890. 
Sonora: Hermosillo, rocky border, dry bed of Sonora River, Chase 5500; by ditch 
in meadow, Hitchcock 3578. Sierra de Alamos, Rose, Standley & Russell 
12837. Guaymas, island in harbor, Rose, Standley & Russell 15019; Palmer 
168 and 349 in 1887. 
CurauaHua: Chihuahua, weed in old field, Hitchcock 7788. Casas Grandes, 
Nelson 6327. 
SmaLoa: Mazatlan, dry hill, Rose, Standley & Russell 13794. 
Duranao: Durango, west slope of Iron Mountain, Palmer 196 in 1896; dry ground, 
Mitchcock 7575. Torreén, weed in field, Hitchcock 7559. 
Coanui.a: Jaral, Schumann 1730. Saltillo, sandy field, river bottom, Hitchcock 
5628. 
Nuevo Leoén: Monterey, stony bed of river, Hitchcock 5523. 
TAMAULIPAS: Victoria, Palmer 396 in 1907. Tampico, Palmer 156 in 1910; sand 
dunes, Hitchcock 5792. 
Trric: Acaponeta, along the river, Rose, Standley & Russell 14407. 
AGUASCALIENTES: Aguascalientes, weed along road, Hitchcock 7440; sterile rocky 
hill, Hitchcock 7470. 
