556 GRAMINEZ. 
Jalapa 6000 to 7000 feet, and near Chapultepec at 7200 feet (Galeotti, 5732), Orizaba 
near perpetual snow (Schiede). 
8. Trisetum gracile, Fourn. Mex. Pl. Enum., Gram. p. 108. 
Norra Mexico, San Luis Potosi (Virlet d Aoust); SouTa Mexico, La Hoya 7000 to 
8000 feet (Liebmann). Hb. Kew. 
4. Trisetum interruptum, Fourn. Mex. Pl. Enum., Gram. p. 108. 
SourH Mexico, Vaqueria del Jacal, 10,000 feet, and Chinantla (Liebmann). 
5 Trisetum nivosum, Fourn. Mex. Pl. Enum., Gram. p. 107. 
Sour Mzxico, Nevado de Toluca (Hahn). Hb. Kew. 
Concerning this Fournier says, ‘ Forsan tantum varietas Triseti tolucensis ;” and we 
think there is little doubt that 7. tolucensis and several other proposed species are 
referable to 7. subspicatum, a species ranging from the Rocky Mountains through 
the Andes to Fuegia and the Falkland Islands, and recurring in the mountains of 
Australia, Tasmania, and New Zealand. 
6. Trisetum paniculatum, Fourn. Mex. Pl. Enum., Gram. p. 109. 
SourH Mexico, Cumbre de Ixtepec, Sierra de Oaxaca 9000 to 10,000 feet, and 
Hacienda de Santa Ana (Liebmann). Hb. Kew. 
7. Trisetum tolucense, Kunth, Revis. Gram. i. pp. 101 et 297, t. 60, Enum. 
Pl. i. p. 296, et Suppl. p. 248; Fourn. Mex. Pl. Enum., Gram. p. 107; Rupr. in Bull. 
Acad. Brux. ix. (reprint, p. 7). 
Avena tolucensis, H. B. K. Nov. Gen. et Sp. i. p. 148. 
Trisetum molle, Trim. partim, non Avena mollis, Mich. ex Fournier. 
Soura Mexico, near Toluca at 8250 feet (Humboldt & Bonpland), peak of Orizaba 
11,000 to 12,500 feet (Galeotti, 5772), at 14,000 feet (Liebmann). Hb. Kew. 
8. Trisetum virletii, Fourn. Mex. Pl. Enum., Gram. p. 108. 
Norra Mexico, San Luis Potosi (Virlet @ Aoust); Sours Mexico, Orizaba (Miller, 
651), woods of the Desierto Viejo, valley of Mexico (Bourgeau, 1149), around Mexico 
and near Guazimalpan (Schaffner). Hb. Kew. 
61. AVENA. 
Avena, Linn. Gen. Plant. n. 91; Benth. et Hook. Gen. Plant. i. p. 1160. 
Species about forty, mostly inhabiting the temperate regions of the Old World and 
a few North America. Several annual species are now very widely colonized, as Avena 
sterilis, Linn., and Avena fatua, Linn., in many parts of Mexico. Avena trichopodia, 
Presl (Relig. Henk. i. p. 254), from Mexico, is an obscure plant. | 
