HITCHCOCK——MEXICAN GRASSES. 845 
HERBARIUM SPECIMENS FROM Mexico—Continued. 
Micuoacdn: Morelia, Arséne 2850. 
FEDERAL District: Orcutt 3675; hills, Pringle 8567; Bourgeau 450. 
MoreELos: Cuernavaca, Orcutt 3885, Rose, Painter & Rose 10189. 
GUERRERO: San Marcos, Nelson 2265. Balsas, rocky hill, Hitcheock 6780, 6788. 
Oaxaca: Oaxaca, rocky hill, Hitchcock 6136; Valley of Oaxaca, Nelson 1258, 1443. 
28. Bouteloua repens (H. B. K.) Scribn. & Merr. U. S. Dept. Agr. Div. Agrost. 
Bull. 24: 26. 1891. 
Dinebra repens H. B. K. Nov. Gen. & Sp. 1: 172. pl. 52. 1816. 
Type locality, ‘‘ad littora Oceani Pacifici prope Acapulco.” 
RanGE: Pacific coast of southern Mexico. 
HERBARIUM SPECIMENS: 
Cotma: Manzanillo, Hitchcock 7040, Orcutt 4459. 
Oaxaca: Salina Cruz, Ross 976. 
89. CATHESTECUM Presl, Rel. Haenk. 1: 294. pl. 42. 1830. 
KEY TO THE SPECIES. 
Plants annual..........-...0.2 0-22 cece eee eee eee eee eee eee 1. C. prostratum. 
Plants perennial. 
Plants cespitose; sterile lemmas 5 to 7-awned.....-....--.-- 4. C. multifidum. 
Plants stoloniferous; sterile lemmas 3-awned (awns sometimes 
shorter than the lobes). 
Sterile lemma cleft nearly to the base; sheaths glabrous. 3. C. stoloniferum. 
Sterile lemma cleft less than halfway; sheaths more or 
less pubescent ..............------2--2-2------------ 2. C. erectum. 
1. Cathestecum prostratum Presl, Rel. Haenk. 1: 295. pl. 42. 1830. 
Type locality, ‘‘Mexico.”’ 
Rance: Morelos, the only locality on record. 
HERBARIUM SPECIMEN: 
Moretos: Jojutla, limestone hills, Pringle 8707. 
2. Cathestecum erectum Vasey & Hack. Bull. Torrey Club 11: 37. pl. 45. 1884. 
Type locality, ‘‘ Presidio, western Texas.”’ 
Rance: Southwestern Texas and Sonora, south in the highlands to Oaxaca. 
HERBARIUM SPECIMENS FROM MEXxIco: 
Sonora: Plains near Altar, Pringle in 1884. Alamos, Palmer 705 in 1890. Her- 
mosillo, dry soil, Hitchcock 3535; meadow near river, Hitchcock 3597. Guay- 
mas, rocky lava hill, Hitchcock 3546, 3551; Palmer 161 and 345 in 1887. Yaqui 
River, Palmer 17 and 18 in 1869. Llano, along railway, Hitchcock 3528. 
Imuris to Santa Ana, Griffiths 6834. 
CHIHUAHUA: Southwestern Chihuahua, Palmer 66 in 1885. 
SmvaLoa: Culiacdn, Brandegee 1 and 2 in 1904. Imala, hillsides and arroyos, 
Palmer 1459 and 1460 in 1891. 
Jatisco: Tequila, thin gravelly soil, Pringle 4559. Guadalajara, overhanging a 
bank, Hitchcock 7300, Palmer 270 in 1886. San Pedro, prairie, Hitchcock 
7278. San Nicolas, sterile clay hill, Hitchcock 7200,7202. Valencia, prairie, 
Hitchcock 7003. Road between Huejuquilla and Mezquitic, Rose 2582. 
GuanasuaToO: Irapuato, rocky hill, Hitchcock 7436. 
Couma: Colima, Palmer 12 in 1897, 1261 in 1891. Armerfa, prairie near railway, 
EMitchcock 7024. 
Puesia: Tehuacdn, Rose & Hay 5924. Santa Lucia, Purpus 3596. 
GuERRERO: Apipilulco, prairie, Hitchcock 6697. Balsas, Hitchcock 6776; along 
railway, Hitchcock 6799, 6800. 
Oaxaca: Monte Albén, Smith 950. Oaxaca, rocky hill, Hitchcock 6120. 
