308 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Lowermost branches in 1’s or 2’s. 
Panicle long and _ narrow; 
branches spreading in 
anthesis, spikelet-bear- 
ing nearly to base; 
blades slender, elong- 
ated, attenuate-pointed 18. S. jacquemontii. 
Panicle pyramidal, the 
branches naked below; 
blades short, flat, 
mostly basal; spikelets 
1mm. long........... 15. S. atrovirens. 
1. Sporobolus shepherdi Vasey, Bull. Torrey Club 14: 8, 1887. 
Type locality, ““S. W. Chihuahua,” the type specimen collected in 1885 by Palmer, 
probably at Batopilas. 
Rance: Highlands of northern Mexico. 
HERBARIUM SPECIMENS FROM Mexico: 
CurHuaHuA: Sanchez, rocky pine woods, Hitchcock 7679. Sierra Madre, Pringle 
1424; near Colonia Garcia, Townsend & Barber 330, Southwestern Chi- 
huahua, Palmer 9 in 1885. 
Duranao: Sandfas Station, barranca, Pringle 13635. 
2. Sporobolus confusus (Iourn.) Vasey, Bull. Torrey Club 15: 293. 1888, 
Vilfa confusa Fourn. Mex. Pl. 2: 101. 1886. 
Type locality, not definitely given, Jorullo being the first place mentioned (‘In 
devexis arenosis montis ignivomi Jorullo, Bonpl.,’’ [that being the type collection 
of Vilfa ramulosa H. B. K.]); collections from Orizaba, Nevado de Toluca, Jalacingo, 
and United States also cited. 
Ranae: Montana to Washington and south in the mountains to southern Mexico. 
HERBARIUM SPECIMENS FROM MEXICO: 
Lower CaLiForNIA: Sierra de la Laguna, Brandegee in 1899. 
Sonora: Alamos, Palmer 696 in 1890. 
CuiHuAnuA: Santa Eulalia Mountains, gravelly washes, Wilkinson in 1885. 
Chihuahua, dry bed of river, Hitchcock 7783; hills and plains, Pringle 482. 
Southwestern Chihuahua, Palmer 4, 4a, 76, and 85 in 1885. Sdnchez, open 
ground in pine woods, Hitchcock 7662. Mifiaca, sandy bed of dry run, Hitch- 
cock 7767. 
AGUASCALIENTES: Aguascalientes, gravel in dry run, Hitchcock 7472. 
San Luis Porosi: San Luis Potosf, Parry & Palmer 927 in 1878. 
Jauisco: Guadalajara, prairie near San Pedro, Hitchcock 7276; dry ditch, road to 
Barranca de Oblatos, Hitchcock 7309. 
MicHoacANn: Punguato near Morelia, Arséne in 1909. 
Mexico: Salto de Agua, dry meadows, Purpus 1635. Valley of Mexico, Schaffner 
192; Rose & Painter 7128, 
PuEeBLa: Puebla, Nicolas in 1908. 
8. Sporobolus ramulosus (H. B. K.) Kunth, Rév. Gram. 1: 68. 1829, 
Vilfa ramulosa H. B. K. Nov. Gen. & Sp. 1: 137, 1816. 
Sporobolus racemosus Vasey, Bull. Torrey Club 14: 9. 1887. 
Type locality, “in devexis arenosis montis ignivomi Mexicani, Jorullo.’! 
RanGE: Colorado, Arizona, and southward in the highlands to southern Mexico. 
HERBARIUM SPECIMENS FROM MEXxICco: 
Lower CALiForNIA: Sierra de la Laguna, Brandegee in 1899, 
