350 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM, 
HERBARIUM SPECIMENS FROM Mexico—Continued. 
Cutnuanua: Chihuahua, depression in mesa, Hitchcock 7781; wet places, plain, 
Pringle 814. 
SINALOA: Culiacin, Palmer 1789 in 1891. 
5. Leptochloa dubia (H. B. K.) Nees, Syll. Pl. Ratisb. 1: 4. 1824. 
Chloris dubia H. B. K. Nov. Gen. & Sp. 1: 169. 1816. 
Type locality, “in apricis subhumidis prope rupem porphyriticam el Pefion, in 
convalle Mexicana,”’ 
Rance: Southern United States to southern Mexico. 
HERBARIUM SPECIMENS FROM Mexico: 
Lower Cauirornia: Santa Margarita Island, Brandegce 6 in 1889. 
Sonora: Sonoyta, Mearns 2715. Guaymas, Palmer 270 and 273 in 1887. Nogales 
to Cocospora Ranch, Grijjiths 6804. 
CuinuaHuA: Chihuahua, hills and plains, Pringle 422; along dry run, Hitch- 
cock 7776. 
‘ Srvatoa: Mazatlan, about salt marsh, Rose, Standley & Russell 14108. 
Durango: Durango, along road, Hitchcock 7584; garden, Palmer 530 in 1896. 
Santiago Papasquiaro, damp places, shady ravines, Palmer 468 in 1896. 
CoanulLa: Jaral, Schumann 1720. Saltillo, fields, sandy river bottom, Hitchcock 
5631; ditches and rich soil, Palmer 381 and 382 in 1898. 
Nuevo Leon: Monterey, rocks, Hitchcock, 5517. 
Zacatecas: Concepcién del Oro, Palmer 268 in 1904. Zacatecas, in gulch in dry 
sterile hills, Hitchcock 7523. Hacienda de Cedros, hills, Lloyd 231. Pico de 
Tevia, Lloyd 240. 
AGUASCALIENTES: Aguascalientes, sterile, rocky hill, Hitchcock 7474; low ground 
along railway, Hitchcock 7483. 
San Luis Potosi: Cardenas, irrigation ditch, Mitchcoa’ 5739. San Luis Potosf, 
alfalfa field, Hitchcock 5670; along dry ditch, J/itehcock 5653. Guascama, 
Purpus 5434. 
Jauisco: Zapotlan, railway right of way, Hitchcock 7131. 
Guanasuato: Irapuato, moist sandy-clay plain, //itchcock 7392. 
QuERETARO: Querétaro, Rose d& Rose, 11189, open, rocky hill, /itchcock 58324. 
San Juan del Rfo, stony hillside, Rose, Painter & Rose, 9587. 
Hipauco: Pachuca, rocky hill, Mitehcock 6715; Orcutt 3917. Tula, Holway 3230. 
México: Toluca, along ditch, Hitchcock 6912. Federal District, edge of field, 
Hitcheock 5892; bank along ditch, Hitchcock 5917; Bourgeau 533; Oreutt 3691. 
Pursia: Tehuacin, Rose & Hay 5819; old field, Iitchcock 6034; along railway, 
Hitchcock 6048; calcareous soil, Pringle 9552. San Luis Tultitlanapa, Purpus 
3591; banks of Atoyac, Nicolas in 1909. 
MoreEtos: Cuernavaca, along road, Hitchcock 6851. 
Oaxaca: Between Tule and Oaxaca, edge of field, Hitchcock 6172; along ditch, 
Hitchcock 6186. 
Wirnour Locauity: Schaffner 671. 
S. Leptochloa floribunda Doell in Mart. Fl. Bras. 23: 89. pl. 26. 1883. 
Type locality, ‘fad ripas fluminis Amazonum inter Manaos et Santarem.” 
RanoaeE: Southern United States to Brazil. 
HERBARIUM SPECIMENS FROM Mexico: 
SInALOA: Culiacdn, Brandegee 12 and 13 in 1904. 
Teric: Foothills between Acaponeta and Pedro Paulo, Rose 1930. 
Tasasco: Rio del Carrizal, Rovirosa 629. 
7. Leptochloa aquatica Scribn. & Merr. U.S. Dept. Agr. Div. Agrost. Bull. 24: 26. 
1901. 
Type locality, ‘shallow water near Cuernavaca, State of Morelos,’’ the type speci- 
men collected by Pringle (no. 6664). 
