198 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Rance: Warmer regions of the Old World, introduced in the American tropics. 
HERBARIUM SPECIMENS FROM MEXIco: 
San Luis Potosi: Tamasopo Canyon, river ledges, Pringle 3132. Rascén, Palmer 
654 in 1905. 
MorELos: Jojutla, Pringle 9610. 
9. COELORACHIS Brongn. in Duperrey, Bot. Voy. Coquille 64, pl. 14. 1829. 
1. Coelorachis ramosa (Fourn.) Nash, N. Amer. Fl. 17: 86. 1909. 
Apogonia ramosa Fourn. Mex. Pl. 2: 63. 1886. 
Type locality ini Veracruz, three localities being cited, ‘‘Rio Blanco, * * * 
Orizaba, * * * Mirador.’’ 
Rance: Eastern Mexico. 
HERBARIUM SPECIMENS: 
VeERACRUz: Jalapa, low ground, among high vegetation, Hitchcock 6683. Mirador, 
Inebmann 116. Orizaba, Bowrgeau 2647. 
10. RYTILIX Raf. Bull. Bot. Seringe 1: 219. 1830. 
1. Rytilix granularis (L.) Skeels, U. 8. Dept. Agric. Bur. Pl. Ind. Bull. 282: 
20. 1913. 
Cenchrus granularis L. Mant. Pl. 575. 1771. 
Manisuris granularis Swartz, Prodr. Veg. Ind. Occ. 25. 1788. 
Hackelochloa granularis Kuntze, Rev. Gen. Pl. 776. 1891. 
Type locality ‘“‘In India orientali.’’ 
Range: Tropical regions of both hemispheres. 
HERBARIUM SPECIMENS FROM MExIco: 
Lower Ca.irorniA: San Francisquito Mountains, Brandegee in 1890. . 
Sonora: Alamos, Palmer 700 in 1890. 
Cummvuanva: Hills near Chihuahua, Pringle 1057. 
Jatisco: Tequila, Palmer 366 in 1886. Guadalajara, open dry ground, side of 
Barranca de Oblatos, Hitchcock 7334. San Nicolas, sterile clay hill, Hitchcock 
7215. Zapotlin, along railway, Hitchcock 7122. 
Cotma: Alzada, along railway, Hitchcock 7102. 
GuanasuaTo: Irapuato, rocky hill, Hitchcock 7437. 
Micuoacdn: Urudpan, weed in old field, Hitchcock 6970. Sierra Madre, old cul- 
tivated fields, Langlassé 602. 
GUERRERO: Balsas, along railroad, Hitchcock 6781. 
Moretos: Hills near Yautepec, Pringle 11228. Cuernavaca, along railway, 
Hitcheock 6870. 
VeRACRUZ: Orizaba, Bottert 1280. Consoquitla, Liebmann 148. Fortin, Purpus 
2001. Cérdoba, along railway, Hitchcock 6396. 
Cu1apas: Valley of Jiquipilas, Nelson 2951. 
11. TRACHYPOGON Nees, Agrost. Bras. 341. 1829. 
KEY TO THE SPECIES, 
Awns plumose on the lower half only.......-.....-..-.---+----+--- 1. T. montufari, 
Awns plumose throughout; spike conspicuously feathery..........- 2. T. gouini. 
1. Trachypogon montufari (H. B. K.) Nees, Agrost. Bras. 342. 1829. 
Andropogon montufari H. B. K. Nov. Gen. & Sp. 1: 184. 1816. 
Type locality, ‘‘in aridis, apricis regni Quitensis propter Conocoto, Pintae et Villam 
Chilloensem Montufari, Marchionis de Selvalegre.”’ 
Range: Texas and Arizona to Uruguay. 
