GRAMINE, | 579 
3. Distichlis thalassica, Desv. in Gay, Fl. Chil. vi. p. 397. 
Brizopyrum pilosum, Presl, Reliq. Haenk. i. p. 280; Fourn. Mex. Pl. Enum., Gram. p. 120. 
Brizopyrum obtusiflorum, Fourn. loc. cit. ? 
Poa presilei, Kunth, Enum. PI. i. p. 826. 
Poa thalassica, Kunth, loc. cit. ? 
Uniola pungens, Rupr. in Bull. Acad. Brux. ix. (reprint, p. 8), excl. synon. fide Fournieri. 
South Mexico, Juquila, Oaxaca (Galeotti, 5755), San Augustin (Liebmann), Santa 
Cruz (Liebmann).—Cutut. Hb. Kew. 
92. BRIZA. 
Briza, Linn. Gen. Plant. n. 84; Benth. et Hook. Gen. Plant. iii. p- 1194. 
About ten species, inhabiting Europe, North Africa, Temperate Asia, and South and 
Central America. Two or three of the European species are now widely colonized. 
1. Briza rotundata, Steud. Gram. p. 284; S. Wats. in Proc. Am. Acad. xviii. 
p. 182. 
Bromus rotundatus, H. B. K. Nov. Gen. et Sp. i. p. 152. 
Chascolyirum rotundatum, Kunth, Revis. Gram. i. p. 121, et Enum. Pl. i. p. 378; Fourn. Mex. Pl. 
Enum., Gram. p. 112. 
Calotheca rotundata, Roem. et Schult. Syst. Veg. ii. p. 632. 
Chascolytrum subaristatum, Desv. in Journ. de Bot. it. p.71; Kunth, Revis. Gram. 1. p. 347, t. 87, 
et Enum. Pl. i. p. 873, cum syn.; D6ll in Mart. Fl. Bras. 11. 3, p. 134. 
Briza hamarkiana, Ch. et Schl. in Linnea, vi. p. 39. 
Norta Mexico, San Luis Potosi (Schaffner, 1035; Parry & Palmer, 935); Souta 
Mexico, Borrego, Orizaba (Bourgeau, 2750), Real del Monte 7000 feet (Galeotti, 5831), 
Chinantla, Puebla 7000 feet (Liebmann).—Boutvia; ARGENTINA; CHILI; BRraziu; 
Urvevuay. Hb. Kew. 
93. POA. 
Poa, Linn. Gen. Plant. n. 83; Benth. et Hook. Gen. Plant. i. p. 1196. 
This large genus is generally diffused, though comparatively rare in the warmer 
regions. Upwards of 200 species have been published, but there are probably less 
than 100 distinct ones. | 
1. Poa annua, Linn. Sp. Pl. ed.i. p.68; A. Gr. Man. Bot. Northern U.S. ed. 5, 
p. 629; Doll in Mart. Fl. Bras. ii. 3, p. 121; S. Wats. in Proc. Am. Acad. xviii. 
p. 182, et Bot. Calif. ii. p. 311. 
Norta Mexico, Monterey, Nuevo Leon (Palmer, 1365), San Luis Potosi (Schaffner, 
1032); Sourn Mexico, Ciudad Real, Chiapas (Linden, 1354). Hb. Kew. 
This grass is now almost everywhere in temperate and subtropical regions; but 
it is impossible to decide whether it is really indigenous in the New World. Gray 
states that it is everywhere in cultivated and waste ground, but doubtfully indigenous. 
Chapman marks it as introduced in the Southern States; while Watson says: “No 
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