HITCHCOCK—-MEXICAN GRASSES. 371 
8. Uniola paniculata L. Sp. Pl. 71. 1753. 
Type locality, ‘In Carolina.’ 
Rance: Atlantic coast, Virginia to South America. 
HERBARIUM SPECIMEN FROM MEXICco: 
Tasasco: Dos Bocas, Rovtirosa 565. 
115. DISTICHLIS Raf. Journ. de Phys. 89: 104. 1819. 
1. Distichlis spicata (L.) Greene, Bull. Calif. Acad. 2: 415. 1887. SALT GRASS, 
Uniola spicata L. Sp. Pl. 71. 1753. 
Type locality, ‘In Americae borealis maritimis.”’ 
RaNGE: Salt marshes and alkaline soil throughout the United States and Mexico. 
HERBARIUM SPECIMENS FROM MEXIco: 
Lower CAuirornia: Cape St. Lucas, Xantus 120. Tecate River, near Monu- 
ment no. 245, Schoenfeldt 3721; Mearns 3782. Seven Wells, Salton River, 
Schoenfeldt 2875. Playa Marfa, Anthony 139. Nachognero Valley, Mearns 
3361. Mulegé, Palmer 43 in 1887. Topo, Orcutt 1161. Santa Agueda, 
Palmer 219 in 1890. San Gregorio, Brandegee 19 in 1889. Magdalena Island, 
Brandegee 20 in 1889. Santa Catalina Mountains, Orcutt in 1884. 
Sonora: Sonoyta River at Agua Dulce, Mearns 2787. Santa Ana, along track, 
Hitchcock 3626. Hermosillo, along ditch, Hitchcock 3624. San José de 
Guaymas, Palmer 270 in 1897. 
Curmuanua: Near Lake Santa Maria, Nelson 6416. Mesquite Springs, Mearns 
266. 
Srnatoa: Altata, Rose 1367. . 
Duranao: Durango, in large patches in alkaline bottoms, Palmer 182, 385, and 
388 in 1896; along ditch, Mttchcock 7654. 
CoaHUILA: Jaral, Schumann 1739. 
Jauisco: Orozco, near large pond, Hitchcock 7384. 
Hmatco: Pachuca, sandy soil along railway, Hitchcock 6761. 
México: Toluca, along road, Hitchcock 6921. Tlalnepantla, along railroad bank, 
Rose, Painter & Rose 8393. Without locality, Galeotti 5746. Federal Dis- 
trict, along trolley line, Hitchcock 5874, 5875; cornfield, Hitchcock 5885; 
alkaline meadows, Pringle 6640; wet meadows, Pringle 9559; Bourgeau 230; 
Rose & Hay 5974; Orcutt 4110. 
PueEsa: Pico de Orizaba, Liebmann 481. Cerro Guadalupe, Nicolas in 1909. 
Tehuacin, old field, Hitchcock 6037; along ditch, Hitchcock 6041; along rail- 
way, Hitchcock 6046. 
116. BRIZA L. Sp. PI. 70. 1753. 
KEY TO THE SPECIES. 
Plants annual; panicle open.......-.-.-.-..--2+-+ 0-2-2 -----2---+ L. B. minor. 
Plants perennial; panicle compact............--.---++--+++++-+-+ 2. B. rotundata, 
1. Briza minor L. Sp. Pl. 70. 1753. 
Type locality given as ‘‘in Helvetia [et] Italia.’’ 
Rance: Temperate regions of the Old World, sparingly introduced in North America, 
HERBARIUM SPECIMEN FROM MEXICO: 
Veracruz: Veracruz, Purpus 6204. 
2. Briza rotundata (H. B. K.) Steud. Syn. Pl. Glum. 1: 284. 1854. 
Bromus rotundatus H. B. K. Nov. Gen. & Sp. 1: 152. 1816. 
Type locality, ‘In alta planitie Regni Mexicani, inter Zelaya et Queretaro.”’ 
Range: Highlands of eastern slope of Mexico. 
