964 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
11. Chaetochloa imberbis (Poir.) Scribn. U. 8. Dept. Agr. Div. Agrost, Bull. 4: 
39. 1897. 
Panicum imberbe Poir. in Lam. Encycl. Suppl. 4: 272. 1817. 
Type locality, ‘‘In America septentrionale & Brasilia.” 
RanGE: Northeastern United States to West Indies and South America. 
HERBARIUM SPECIMENS FROM Mexico: 
Lower CautrorniA: San José del Cabo, Brandegee 15 in 1890; Purpus 325. 
Sonora: Hermosillo, moist adobe soil, Hitchcock 3586; cultivated ground, Hitch- 
cock 3587; sandy bed of river, Hitchcock 3618; along ditch, Hitchcock 3625; 
Maltby 241; valley of Rio de Sonora, Rose, Standley & Russell 12496. 
CuHInuAHUA: Sanchez, along railway, Hitchcock 7691. 
Srvatoa: Lodiego, river bottoms, inundated in rainy seasons, Palmer 1648 in 1891. 
Duranco: Durango, dry ground, Hitchcock 7593; Palmer 378, 381, 539 in 1896. 
Tejamén, Palmer 499 and 539 in 1906. Tepehuanes, Palmer 263 in 1906. 
CoaunuILA: Saltillo, rich bottom lands and gardens, Palmer 383 and 384 in 1898; 
along irrigation ditch, Hitchcock 5583, 5610, 5650. Jimulco Springs, Pringle 
431, 
Nuevo Le6n: Monterey, along irrigation ditch, Hitchcock 5570. 
TAMAULIPAS: Victoria, Palmer 393 and 556 in 1907. Tampico, Palmer 149 in 
1910; among brush in low ground, Hitchcock 5797. 
Tepic: Santa Teresa, Rose 3417. 
AGUASCALIENTES: Aguascalientes, weed, edge of field, Hitchcock 7455. 
San Luis Potosi: Las Canéas, moist soil, Hitchcock 5761. San Luis Potosf, 
alfalfa field, Hitcheock 5669; Schaffner 149, 171. CArdenas, moist soil, Hitch- 
cock 5720; along railway, Hitchcock 5722. 
Jaisco: San Nicolas, prairie, Hitchcock 7184. Zapotldn, railway right of way, 
Hitchcock 7128, 7142, Guadalajara, Palmer 246 and 293 in 1886. Colotlan, 
Rose 3607. 
GUANAJUATO: Irapuato, moist sandy-clay plain, Hitchcock 7401. Acdmbaro, 
along railway, Hitchcock 6945; along road, Hitchcock 6953. 
QUERETARO: Querétaro, irrigation ditch, Hitchcock 5821, 5849. 
Hipaco: Pachuca, rocky hill, Hitchcock 6712, 6726. Ixmiquilpan, Rose, Painter 
& Rose 9056. Between Pachuca and Real del Monte, Rose, Painter & 
Rose 8723, 
Corma: Alzada, along railway, Hitchcock 7076; Orcutt 4624. Colima, moist 
places among thickets in fruit garden, Palmer 17 in 1897. 
Micuoacdn: Urudpan, in brush along railway, Hitchcock 6959; prairie along rail- 
way, Hitchcock 6986. Morelia, Arséne in 1909. 
México: Toluca, rocky hill, Hitchcock 6898. Popo Park, open ground, Hitchcock 
6016. Federal District, Holway 7, 3126, 3156; Rose 3556; along ditch, Hitch- 
cock 5883, 5923; lava rock, Hitchcock 5944; lava beds, Pringle 6419, 11220; 
Bourgeau 231; Oreutt 3613, 3534. 
Pursia: San Marcos, railway embankment, Hitchcock 6511. Tehuacdn, along 
ditch, Hitchcock 6042, Xochimilco, Nelson in 1893. Chinantla, Liebmann 
350. <Acatzingo, Nicolas in 1909. 
VERACRUZ: Orizaba, roadside ditch, Hitchcock 6320, 6327; open rocky hill, Hitch- 
cock 6349, 6365, 6370; Botteri 157, 631, 673; Nelson 33. Cérdoba, weed along 
track, Hitchcock 6398. Veracruz, sandy soil, Hitchcock 6573; sandy prairie, 
Hitchcock 6550. Jalapa, railway track, Hitchcock 6593, 6594, 6623; Smith 
1547. Colipa, Liebmann 360. Sanborn, Orcutt 3237. 
Moretos: Valley of Cuantla, Pringle 9587. Cuernavaca, pasture, Hitchcock 
6832. El Parque, Orcutt 3861. 
GUERRERO: Iguala, Rose, Painter & Rose 9388. 
