258 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
HERBARIUM SPECIMENS FROM Mexico—Continued. 
JALisco: Orozco, near large pond, Hitchcock 7373. Guadalajara, Palmer 430 and 
430a in 1886; along stream, side of Barranca de Oblatos, Hitchcock 7351. 
Guanajuato: Acdmbaro, along ditch, Hitchcock 6949. Irapuato, moist sandy- 
clay plain, Hitchcock 7420. 
QUERETARO: Querétaro, irrigation ditch, Hitchcock 5810, 5852, 5866. 
Micuoacdn: Maravatio, Hitchcock 6923. Morelia, Rose 3591. 
México: Valley of Mexico, Pringle 9606; in shallow water, Pringle 8572; Bourgeau 
530. Xochimilco, ditch along trolley, Hitchcock 5879. 
Veracruz: Cérdoba, weed in field, Hitchcock 6452. Orizaba, Bottert 718; road- 
side ditch, Hitchcock 6344. San Francisco near Veracruz, Smith 1329. 
MoRELOos: Cuernavaca, along ditch, Hitchcock 6849. 
4. Echinochloa walteri (Pursh) Heller, Cat. Pl. N. Amer. ed. 2. 21. 1900. 
Panicum walteri Pursh, Fl. Amer. Sept. 1: 66. 1814. 
Type locality, South Carolina, Pursh bestowing the name on the species errone- 
ously referred by Walter to Panicum hirtellum. 
Rance: United States to Southern Mexico. 
HERBARIUM SPECIMENS FROM MEXICO: 
San Luis Potosf: Cardenas, along irrigation ditch, Hitchcock 5737. 
TaBasco: Gonzalez, along river bank, Rovirosa 703. 
5. Echinochloa holciformis (H. B. K.) Chase, Proc. Biol. Soc. Washington 24: 155. 
1911. 
Oplismenus holeiformis H. B. K. Nov. Gen. & Sp. 1: 107. 1816. 
Type locality, ‘in humidis montanis prope Cinapecuaro, alt. 970 hexap. (Regno 
Mexicano.)”’ 
Rance: Mexico and Central America. 
HERBARIUM SPECIMENS FROM MExiIco: 
Duraneo: Durango, in water of pond, Hitchcock 7611. Along water courses, 
sometimes in shallow water, Palmer 253 in 1896. 
Jauisco: Orozco, margin of large pond, Hitchcock 7375. 
GuanasuaTo: Acdmbaro, water of ditch, Hitchcock 6946. Irapuato, along ditch, 
EMitchcock 7393. 
MicHoac&n: Morelia, Arséne in 1909. 
México: Valley of Mexico, Pringle 8622. 
6. Echinochloa spectabilis (Nees) Link, Hort. Berol. 2: 209. 1833. 
Panicum spectabile Nees, Agrost. Bras. 262. 1829. 
Type locality, “‘Rio de Janeiro,’’ the species believed by Nees to be introduced 
from Angola, Africa. 
RanGE: Mexico to South America. 
HERBARIUM SPECIMENS FROM MEXICO: 
Sonora: Cananea, Ricketts 2. 
CummuaHua: Sénchez, along railway, Hitchcock 7696. Mifiaca, along railway, 
Hitchcock 7758. Sierra Madre, wet places, Pringle 1404. 
Duraneo: Durango, along dry creek bed, Hitchcock 7616; Palmer 253 in 1896. 
Otinapa, Palmer 333 in 1906. 
ZACATECAS: Zacatecas, along dry river bed, Hitchcock 7527. 
AGUASCALIENTES: Aguascalientes, in dry ditch, Hitchcock 7441; along pond, Hitch- 
cock 7489. 
Micnoackn: Zamora, in water, Pringle 8480. Morelia, Nicolas in 1909. 
Mexico: Toluca, along ditch, Hitchcock 6914. 
Tasasco: Laguna de Peralta, Rovirosa 315. 
