278 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
HERBARIUM SPECIMENS FROM Mrxico—Continued. 
Duraneo: Durango, common on hillsides and plains, especially among ant hills, 
Palmer 535 in 1896; among mesquite bushes, Palmer 767 in 1896; along road, 
Hitchcock 7581; dry ground, Hitcheock 7602. Tlahualilo, Pittier 469. Torredn, 
Holway 16}; rocky hill, Hitchcock 7544. 
Hipauco: Dublin, Pringle 9597. Pachuca, rocky hill, Hitchcock 6727. Telles, 
Orcutt 4130. 
Frperau District: Pedregal, lava rock, Hitchcock 5937; dry soil, Pringle 6227; 
Schaffner 164; Rose & Painter in 1903. 
Pursia: Tehuacdn, along railway, Hitchcock 6048}; edge of field in dry ditch, 
Hitchcock 6075. 
MoreELos:; Cuernavaca, along stone wall, Hitchcock 6865. 
Oaxaca: Oaxaca, side of sterile rocky hill, among cactus, Hitchcock 61004; rocky 
hill, Hitchcock 6138; edge of field, Hitchcock 6165. Cuicatlin, Nelson 1654. 
Tomellin, Rose, Painter & Rose 10086; rocky bank, Hitchcock 6194. Las 
Sedas, Smith 918, 931. 
Coanuma: Saltillo, Palmer 333 in 1904; sandy field, river bottom, Hitchcock 5632; 
cultivated lands, Palmer 388 in 1898. Parras, Palmer 1352 in 1880, 
Nuevo Leon: Monterey, edge of field, Hitchcock 55264, 
Zacatecas: Zacatecas, in gulch in dry sterile hills, Hitcheock 7498, 7511. Pla- 
teado, Rose 2703. 
AGUASCALIENTES: Aguascalientes, weed, edge of field, Hitchcock 7447; sterile 
rocky hill, Hitchcock 7478. 
San Luis Porosf: San Luis Potosf, Schaffner 165; edge of field, Hitchcock 5674, 
5710. 
Jatisco: Guadalajara, on roof of hotel, Hitchcock 7264; prairie, by cornfield near 
San Pedro, Hitchcock 7266; Palmer 474 in 1886. Rio Blanco, Palmer 501, 
50la in 1886. Zapotlin, railway right of way, Hitchcock 7116. San Nicolas, 
prairie, Hitchcock 7191. Chapala, Rose 3472, Rose & Painter 7624. Colotlén, 
Rose 2812. 
Guanasuato: Irapuato, dry shrubby hill, Hitchcock 7429. Ac&mbaro, along rail- 
way, Hitchcock 6924, 6954. 
QUERETARO: Querétaro, rocky hill, Hitchcock 5832. 
8. Aristida lanuginosa Scribn. sp. nov. 
Perennial; culms cespitose, about 1 meter high, erect, lanate-pubescent except in 
the region of the nodes, scabrous below the panicle; leaves mostly basal, the sheaths 
lanate-pubescent except above the nodes, this portion glabrous; ligule a ciliate- 
lanate ring; blades 10 to 25 cm, long, 1 to 2 mm. wide, ending in a long fine point, 
sparsely lanate-pubescent, the older culm blades flat and curled, the upper culm blades 
and those of the innovations involute ; panicle 10 to 25 cm. long, narrow, the branches 
appressed, the lowermost as much as 10 cm. long, naked below, a short branchlet at 
base; spikelets on short appressed pedicels; glumes 1-nerved, acuminate or short- 
awned, sparsely lanate, scabrous on the keels, the lower 6 to 7 mm. long, the upper 
about 1 mm. longer; lemma smooth below except the short-pilose callus, scabrous 
above, tapering into a scabrous, slightly twisted neck, the entire length, including the 
neck, about 11 mm.; awns subequal, somewhat spreading, the central one about 15 
mm. long, the lateral about 12 mm. long. 
Type in the U. S. National Herbarium, no. 691230, collected on “Hills near Guada- 
lajara, Jalisco,’ Mexico, October 28, 1889, by C. G. Pringle (no. 2375). This species 
was distributed under this name but it had not been described. + 
Rance: Pacific slope of Mexico. 
HERBARIUM SPECIMENS: 
Durango: Durango, rocky hill, Hitchcock 7649, 
