204 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
HERBARIUM SPECIMENS FROM Mextco—Continued. 
Jasco: Guadalajara, prairie, Hitchcock, 7272; Palmer 504 in 1886; dry banks, 
Pringle 11733. Zapotlan, hills, Hitchcock 7171. 
Micnoacdn: Urudpan, prairie, Hitchcock 6971. Morelia, Arséne in 1909. 
VERACRUZ: Orizaba, open rocky hill, Hitchcock 6381; Botteri 671; Bourgeau 3134. 
Cutapas: Tuxtla, Nelson 3108. 
8. Andropogon salzmanni (Trin.). 
Rottboellia salzmanni Trin. in Steud. Syn. Pl. Glum. 1: 361. 1854. 
Andropogon imberbis muticus Hack. in DC. Monogr. Phan. 6: 380. 1889. 
Type locality, ‘‘Bahia,’’ Brazil, the type specimen collected by Salzmann. 
RANGE: Mexico and the West Indies to Argentina. 
HERBARIUM SPECIMEN FROM Mexico: 
VERACRUZ: Mirador, Liebmann 115. 
9. Andropogon condensatus H. B. K. Nov. Gen. & Sp. 1: 188. 1816. 
Type locality, ‘‘in temperatis, apricis Regni Novo granatensis prope Ibague et Valle 
de Caravajal, ad radices montis Quindiu.”’ 
Rance: Eastern Mexico to Argentina. 
HERBARIUM SPECIMENS FROM MEXIco: 
San Luts Porosf: Tamasopo Canyon, ledges and gravelly slides, Pringle 3134. 
VERACRUZ: Mirador, Liebmann 50, 52, 54. Jalapa, prairie, Hitchcock 6626, 6661, 
6669. Cérdoba, clay cut, Hitchcock 6412. Orizaba, Botteri, Bourgeau 2646; 
open rocky hill, Hitchcock 6373. 
10. Andropogon muelleri (Nash). 
Schizachyrium muelleri Nash, N. Amer. Fl. 17: 106, 1912. 
Type locality, ‘‘Vera Cruz, Mexico,” the type specimen collected by Miller 
(no. 2176). 
RanaeE: Known only from Veracruz. 
HERBARIUM SPECIMENS: 
VERACRUZ: Veracruz, low prairie, Hitchcock 6548: Miiller 2176. Jalapa, prairie, 
Hitchcock 6659. 
11. Andropogon mexicanus sp. nov. 
Perennial; culms erect and wand-like or sometimes decumbent and rhizomatous at 
base, 1 to few in a cluster, glabrous, flattened, about 1 meter high; sheaths glabrous, 
strongly compressed-keeled; ligule rather firm, 1 mm. long; blades firm, stiffly 
spreading, rounded at base, abruptly apiculate, glabrous except on the margins and 
midrib beneath, flat or, especially on the innovations, folded, 5 to 15 cm. long, as 
much as 1 cm. wide; racemes (spikes) solitary from each subtending sheath, 1 to 2 
cm. long, more or less fascicled or clustered along the upper part of the culm; sub- 
tending sheaths 2 to 2.5 cm. long, scarcely inflated, inclosing the villous peduncle 
and the base of the spike; joints of the rachis about 7 mm. long, long-villous on the 
margins, the cup at apex scarcely oblique; sessile spikelet about as long as the rachis 
joint, not villous, scabrous on the keels, the awn geniculate, loosely twisted below, 
exserted about 1 cm.; pediceled spikelet reduced to an awned glume, the pedicel a 
little shorter than the joint, long-villous with ascending hairs. 
Type in the U. S. National Herbarium, no, 155148, collected on “‘Cool slopes of the 
barranca near Guadalajara,’’ Jalisco, Mexico, November 19, 1888, by C. G. Pringle 
(no. 1805). 
RanGE: Tepic and Jalisco. 
HERBARIUM SPECIMENS: 
Tepic: Common on grassy plains and hillsides, Palmer 1922 in 1892. 
Jatisco: Guadalajara, side of Barranca de Oblatos, Hitchcock 7341, Pringle 1805. 
12. Andropogon fastigiatus Swartz, Prodr. Veg. Ind. Occ. 26. 1788. 
Type locality, ‘‘Jamaica.’’ 
