GRAMINEA, 575 
Texas; ArKANsas; New Mexico.—Soutu Mexico, Vera Cruz (Galeotti, 5705; Gouin, 
87), La Galera (Liebmann). 
16. Eragrostis palmeri, S. Wats. in Proc. Am. Acad. xviii. p. 182. 
NortH Mexico, Juraz on the Sabinas River, Coahuila (Palmer, 13868). Hb. Kew. 
17. Eragrostis pauciflora, Trin. ex Fourn. Mex. Pl. Enum., Gram. p. 117. 
North Mexico, San Luis Potosi (Virlet d'Aoust); Soura Mexico, near Orizaba 
(Schaffner ; Thomas), around Mexico (Berlandier, 843). 
18. Eragrostis pectinacea, Steud. Gram. p. 272; A. Gr. Man. Bot. Northern 
U.S. ed. 5, p. 632; Fourn. Mex. Pl. Enum., Gram. p. 114. 
Eragrostis unionis et U. cognata, Steud. loc. cit. p. 2738. 
Poa pectinacea, Michx. Fl. Bor.-Am. i. p. 69. ) 
MASSACHUSETTS, OHIO, and ILLINoIs southward.—Soutu Mexico, Vera Cruz (Gowin). 
19. Eragrostis pilosa, Beauv. Agrostogr. p. 71; D6ll in Mart. Fl. Bras. ii. 
p. 141, t. 42; Benth. Fl. Austr. vii. p. 645; Griseb. Fl. Brit. W. Ind. p. 532; Fourn. 
Mex. Pl. Enum., Gram. p. 117. . 
This is very widely spread in warm countries of both hemispheres, including Mxxico 
and Central America. Hb. Kew. 
Vasey (Grasses U.S. p. 38) treats it as an introduced plant north of Mexico. 
20. Eragrostis pooides, Beauv. Agrostogr. p. 162, t. 14. fig. 11 ; Déll in Mart. 
Fl, Bras. ii. 8, p. 149; S. Wats. Bot. Calif. ii. p. 315; Fourn. Mex. Pl. Enum., Gram. 
p. 115. 
Poa eragrostis, Linn. Sp. Pl. ed. 1, p. 68. 
Eragrostis poeformis, Link, Hort. Berol. i. p. 188. 
Poa megastachya, Koel. Gram. p. 181; H. B. K. Nov. Gen. et Sp. i. p. 158; Kunth, Enum. Pl. i. 
p. 333. 
Briza eragrostis, Linn. Sp. Pl. ed. 1, p. 70. 
Eragrostis megastachya, Link, Hort. Berol. i. p. 185. 
Eragrostis major et E. minor, Host.; 8S. Wats. in Proc. Am. Acad. xvii. p. 182. 
Eragrostis flavescens, Presl, Relig. Henk. i. p. 278 ? 
A very widely dispersed and variable grass, the extreme forms being very different 
and usually treated as independent species; but we have followed Doll, Watson, and 
others in regarding them as belonging to one polymorphous species. 
Mexico and CENTRAL AMERICA, common. Hb. Kew. 
21. Eragrostis purshii, Schrad. in Linnea, xii. p. 451; A. Gr. Man. Bot. 
Northern U.S. ed. 5, p. 632; Fourn. Mex. Pl. Enum., Gram. p. 116 (varietates «, 2, 
¥> 8). 
Eragrostis parvula, Steud. Gram. p. 277. 
Eragrostis tephrosanthos, Steud. 1. c. p. 278, partim ex Fournier. 
New Jersey to FLoripa and Texas.—Nortu Mexico, San Luis Potosi (Virlet d’ Aoust) ; 
