300 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
HERBARIUM SPECIMENS: 
Jatisco: San Nicolas, sterile clay hill, Hitchcock 7216. Guadalajara, Palmer 770 
in 1886, Palmer in 1885; banks of ravines, Pringle 2351, 11747; prairie, 
Michcock 7306; dry open ground, side of Barranca de Oblatos, Hitchcock 
7332, 7333. Rio Blanco, Palmer 523 and 523a in 1886. 
Cotma: Alzada, Orcust 4649. 
Micnoacdn: Morelia, Arséne 2465. 
VERACRUZ: Mirador, Liebmann 675. Consoquitla, Liebmann 674. 
Moretos: Cuernavaca, rocky prairie, Hitchcock 6878. 
45. Muhlenbergia affinis Trin. Mém. Acad. St. Pétersb. VI. Sci. Nat. 41: 301. 1841. 
Type locality, ‘‘Toluco,”’ the type specimen collected by Berlandier. 
RanaeE: Texas to Arizona and south in the highlands to Oaxaca. 
HERBARIUM SPECIMENS PROM Mexico: 
CurauaHvA: Southwestern Chihuahua, Palmer 13 in 1885. S4nchez, rocky pine 
woods, near dry bed of stream, Hitchcock 7674. Mifiaca, mesa, Hitchcock 
7747, Santa Eulalia Mountains, Pringle 401. 
Duranco: Durango, rough, stony hills and arroyos, Palmer 859 and 860 in 1896, 
dry ground, AMttchcock 7595, 7608. 
Coanuita: San Lorenzo Canyon, Palmer 400 in 1904. 
ZACATECAS: Zacatecas, gulch in dry sterile hills, Hitchcock 7504, 7508, 7514. 
AGUASCALIENTES: Aguascalientes, sterile, rocky hill, Hitchcock 7475. 
Jatisco: Orozco, railway bank by pond, Hitchcock 7371. San Nicolés, sterile 
hill, Hitchcock 7235. Guadalajara, prairie, Hitchcock 7301; Palmer 522 in 
1886. Between Mezquitic and Monte Escobedo, Rose 2614. Bolafios, Rose 
2984, 
Hrpaueo: Pachuca, rocky hill, Hitchcock 6728. 
Micnoacdn: Urudpan, prairie, Hitchcock 6972, 6081. Morelia, Arséne 2595. 
MExico: Toluca, rocky hill, Hitchcock 6887. Federal District, near Chapultepec 
Castle, Hitcheock 7838; lava rock, Hitchcock 5940; Pringle 9557; Bourgeau 
753; Orcutt 4305. 
Pursia: San Marcos, large bunches, sandy soil, Hitchcock 6541. Esperanza, 
rocky hill, Hitchcock 6471. San Luis Tultitlanapa, Purpus 2900. 
VeRacRuz: Orizaba, Botteri 679. 
Oaxaca: Las Sedas, Smith 952. Oaxaca, large bunches, rocky hill, Hitchcock 
6149. Mountain ridge, west side of valley of Cuicatl4n, Nelson 1905. Near 
Reyes, Nelson 1806. 
46. Muhlenbergia speciosa Vasey, Bull. Torrey Club 13: 231. 1886. 
Type locality, southwestern Chihuahua, the type specimen collected in 1885 by 
Palmer (no. 30). 
RanGE: Highlands from Chihuahua to Puebla. 
HERBARIUM SPECIMENS: 
CutInuanua: Southwestern Chihuahua, Palmer 30 in 1885. 
Srna.oa: Culiacdn, Brandegee in 1904. 
Teric: Tepic, growing in compact bunches, along banks of arroyos, Palmer 1919 
in 1892. 
Puersia: Zapotitlén, dry hills, Ross 1308. 
47. Muhlenbergia distichophylla (Pres]) Kunth, Enum. Pl. 1: 202. 1833. 
Podosaemum distichophyllum Presl, Rel. Haenk. 1: 231. 1830. 
Type locality, ‘‘Mexico.” 
RanaE: New Mexico and south on the Pacific slope of Mexico. 
HERBARIUM SPECIMENS FROM Mexico: 
CHIHUAHUA: Batopilas, Palmer in 1885. 
Jatisco: Guadalajara, rocky hills, Pringle 2350. 
MicHoacdn: Sierra Madre, Langlassé 607. Cerro Mamegal, Langlassé 674. 
