HITCHCOCK—MEXICAN GRASSES. 381 
Plants perennial. 
Lemmas glabrous or scabrous..........-.------------. 5. B. pendulinus. 
Lemmas villous on the margins.............----------= 6. B. exaltatus. 
Spikelets not strongly compressed-keeled. 
Lemmas scabrouS..............-2-22--0-2+2--2--e--e---+- 2. B. texensis. 
Lemmas villous. 
Lemmas villous all over.........-..-.----- 2-0-0 ee 3. B. portert. 
Lemmas villous on the margin...............-..------- 4. B. richardsont. 
1. Bromus trinii Desv. in Gay, Fl. Chil. 6: 441. 1853. 
Type locality, ‘‘Andes de Chile austral.”’ 
RanGE: Mexico to Chile, introduced in California. 
HERBARIUM SPECIMENS FROM MEXIco: 
Lower CaLiForNIA: Near Vallecito, Orcutt in 1886. Guadalupe Ranch, Orcutt 
in 1886. Guadalupe Island. Palmer 658 and 667 in 1889. Cedros Island, 
Palmer 659 in 1889. San Quentin Bay, Palmer 686 in 1889, 
2. Bromus texensis (Shear). 
Bromus purgans texensis Shear, U. 8. Dept. Agr. Div. Agrost. Bull. 23: 41. 1900. 
Type locality, ‘“Bexar County, Texas,’ the type specimen collected by Jermy 
(no. 230). 
RanGeE: Texas and northeastern Mexico. 
HERBARIUM SPECIMENS FROM MEXICO: 
Nuevo Leon: Sierra Madre near Monterey, Pringle 2052. 
3. Bromus porteri (Coulter) Nash, Bull. Torrey Club 22: 512. 1895. 
Bromus kalmii porteri Coulter, Man. Rocky Mount. 425. 1885. 
Type locality, ‘‘Colorado, at Twin Lakes,” the type specimen collected by Porter. 
RanGE: Manitoba to Alberta, south to southern Mexico. 
HERBARIUM SPECIMENS FROM MEXICO: 
Lower CauirorniA: La Chuparosa, Brandegee 73 in 1893, 27 in 1899. 
CHrmuanvaA: Southwestern Chihuahua, Palmer in 1885. Sanchez, rocky pine 
woods, Hitchcock 7665. Sierra Madre near Colonia Garcia, Townsend & 
Barber 327. 
ZacATECAS: Sierra de Los Morones near Plateado, Rose 2727. 
San Luis Poros{: San Luis Potosi, Schaffner 129. 
Jauisco: Zapotlin, pine woods, hillside, Hitchcock 7241. 
Hripaugo: Pachuca, rocky hill, Hitchcock 6741. Tula, along railroad, Rose, 
Painter & Rose 8357. 
Mexico: Popocatepetl, open woods, Hitchcock 6011. Toluca, Rose & Painter 
6796, rocky hill, among maguey plants, Hitchcock 6895. 
TiaxcaLa: Contadero Station, hills, Pringle 8597. 
Puesia: Mount Orizaba, open woods, Hitchcock 6264. Esperanza, barren hills, 
Pittier 424; rocky hill, Hitchcock 6484. San Marcos, railway embankment, 
Hitchcock 6516. San Luis Tultitlanapa, Cerro de Paxtle, moist soil, Purpus 
2898; Chalchicomula, ravine in rocky hill, Hitchcock 6277. 
Oaxaca: Sierra de San Felipe, Pringle 4898, Smith 942. 
4. Bromus richardsoni Link, Hort. Berol. 2: 281. 1833. 
Type locality, ‘‘in America septentrionali occidentali,” the source of seed from 
which the type specimen was grown. 
RanGeE: Rocky Mountains, British America to central Mexico. 
HERBARIUM SPECIMENS FROM MExIco: 
CHIHUAHUA: SAdnchez, rocky ravine, Hitchcock 7708, 7713. 
Pues: Puebla, Nicolas in 1908. 
