GRAMINEZ. 585. 
99. AGROPYRUM. 
Agropyrum, J. Gertn. ex Beauv. Agrostogr. p. 101, t. 20. figg. 1 et 2; Benth. et Hook. Gen.. 
Plant. iii. p. 1202. 
About twenty species widely dispersed in the temperate regions of both hemispheres. 
1. Agropyrum pilosum, Presl, Reliq. Henk. i. p. 267; Fourn. Mex. Pl. Enum.,. 
Gram. p. 149. 
Triticum pilosum, Kunth, Enum. Pl. i. p. 442. 
Souta Mexico, Acapulco (Henke), La Miquiguana (Harwinski). 
100. HORDEUM. 
Hordeum, Linn. Gen. Plant. n. 98; Benth. et Hook. Gen. Plant. iii. p. 1206. 
This genus comprises about twelve species, which inhabit Europe, North Africa, 
Temperate Asia, and Extratropical North and South America. 
1. Hordeum adscendens, H. B. K. Nov. Gen. et Sp. i. p. 180; Kunth, Enum. 
Pl. i. p. 456; Fourn. Mex. Pl. Enum., Gram. p. 149. 
Sovta Mexico, in the valley of Mexico, between Chapultepec and Carpio at 7000: 
feet (Humboldt & Bonpland). 
2. Hordeum jubatum, Linn. Sp. Pl. ed. i. p. 85; A. Gr. Man. Bot. Northern 
U.S. ed. 5, p. 638; S. Wats. Bot. Calif. ii. p. 325; Fourn. Mex. Pl. Enum., Gram. 
p. 149. 
CanaDa, southward to Texas and Catirornia, but apparently not in the south-eastern 
States.—Norra Mexico, San Luis Potosi (Virlet @ Aoust); Sourh Mexico, Tacubaya 
(Bourgeau, 219 ; Schaffner), Orizaba (Schaffner). Hb. Kew. 
101. ELYMUS. 
Elymus, Linn. Gen. Plant. n. 96; Benth. et Hook. Gen. Plant. iii. p. 1206. 
About twenty species, inhabiting temperate Europe and Asia, and North and South 
America. 
1. Elymus mexicanus, Cav. Elench. 1803, p. 14; Jacq. Kclog. Gram. t. 19; 
Steud. Gram. p. 350; Fourn. Mex. Pl. Enum., Gram. p. 149, 
MEXICco. 
This is an obscure species, reduced to E. sabulosus, Bieb., an eastern species, in 
Kunth, Enum. PI. i. p. 401. 
2. Elymus sitanion, Schult. Mant. i. p. 426; S. Wats. Bot. Calif. ii. p. 327; 
Fourn. Mex. Pl. Enum., Gram. p. 149. 
_ Oricon and Minnesota, southward to Texas and CaLirornia.—Norta Mexico, San 
Luis Potosi (Virlet d’ Aoust); Sourn Mexico, Cafion de las Minas and Victoria (Kar- 
winskt). 
BIOL. CENTR.-AMER., Bot. Vol. III., December 1885. 4f 
