HITCHCOCK——MEXICAN GRASSES. 911 
2. Sorghastrum liebmannianum sp. nov. 
Annual; culms slender, erect, 1.5 to 2 meters high, glabrous, the nodes glabrous or 
appressed-pubescent; sheaths scabrous or somewhat hirsute, the ligule 3 to 6 mm, 
long, indurated at the edges; blades 15 to 30 cm. long, 3 to 7 mm. wide, flat, scabrous; 
panicle narrow, rather loose, 15 to 25 cm. long; pedicels slender, appressed-villoug 
with a few long hairs toward the summit, the apex abruptly enlarged; sessile spikelet 
4 to 5 mm. long, dark brown, more or less appressed-hirsute to apex; awn well devel- 
oped, 10 to 15 mm. long, with two more or less distinct bends; sterile pedicels a little 
shorter than the sessile spikelet, plumose with purplish hairs. 
Type in the U. S. National Herbarium, no. 691222, collected on an open rocky 
hill, Orizaba, Veracruz, Mexico, August 24, 1910, by A. 8. Hitchcock (no. 6352). 
Other specimens in the National Herbarium, all from Veracruz, are: Totutla, Lieb- 
mann 25; Orizaba, Botteri 642, 646. 
This species is included by Hackel! with Andropogon nutans linneanus Hack., 
the type of which comes from the southeastern United States. The latter differs in 
its perennial habit, larger spikelets, and longer awns and blades. 
3. Sorghastrum agrostoides (Speg.). 
Andropogon agrostoide Speg. Anal. Soc. Cienc. Argentina 16: 186. 1883. 
Andropogon nutans agrostoides Hack. in DC. Monogr. Phan. 6: 529. 1889. 
Type locality, ‘‘In pratis uliginosis praecipue ad limina sylvarum in ‘Chaco.’ 
Prope coloniam ‘Resistencia.’ ” 
Ranae: Southern Mexico to Argentina. 
HERBARIUM SPECIMENS FROM MEXICO: 
VERACRUZ: Consoquitla, Liebmann 37. Jalapa, large bunches, sometimes with 
short rhizomes, prairie, Hitchcock 6692. Mirador, Liebmann 36. Orizaba, 
Botteri. 
Curapas: Ricardo, Nelson 2967. Ocuilapa, Nelson 3008. 
4, Sorghastrum nudipes Nash, N. Amer. Fl, 17: 129. 1912. 
Type locality, ‘“‘pine plains, base of the Sierra Madre, Chihuahua, Mexico,’’ the 
type specimen collected by Pringle (no. 1433). 
Rance: Known only from Chihuahua. 
HERBARIUM SPECIMENS: 
Cummuanva: Sdnchez, rocky pine woods, Hitchcock 7678. Sierra Madre, pine 
plains, Pringle 1433. Near Colonia Garcfa, Townsend & Barber 336. South- 
western Chihuahua, Palmer 11 in 1885. 
5. Sorghastrum nutans (L.) Nash in Small, Fl. Southeast. U. 8. 66. 1903. 
Andropogon nutans L. Sp. Pl. 1040. 1753. 
Type locality, ‘‘Virginia, Jamaica.’”” The type specimen in the Linnewan Herba- 
rium was collected by Kalm, and consequently came from somewhere in Canada or 
the northeastern United States and was not from Virginia or Jamaica. The latter 
localities refer to synonyms cited by Linnzus, both of which refer to other species.” 
RanaeE: Eastern United States to Mexico. 
HERBARIUM SPECIMENS FROM MEXICO: 
Lower Caurrornia: Socorro Island, Anthony 401. 
Sonora: Cochuto, Hartman 88. 
Jatisco: Guadalajara, in bunches, side of Barranca de Oblatos, Hitchcock 7346. 
Rio Blanco, Palmer 511 in 1886. 
Micuoacan: Morelia, Nicolas in 1909. 
Veracruz: Alta Luz, rocky soil, Purpus 2897, 5592. 
Oaxaca: Mountain ridge on west side of valley of Cuicatlan, Nelson 1905a; Reyes, 
Nelson 1807a. Las Sedas, Smith 917. 
1DC. Monogr. Phan. 6: 531, 1889. 
2 Hitchcock, Contr. U. 8. Nat. Herb. 12: 125. 1908. 
