560 GRAMINEZ. 
2. Trichloris pluriflora, Fourn. Mex. Pl. Enum., Gram. p. 142. 
Trxas.—Mexico, without locality (Karwinskit). 
68. GYMNOPOGON. 
Gymnopogon, Beauv. Agrostogr. p. 41, t. 9. fig. 3; Benth. et Hook. Gen. Plant. iii. p. 1167. 
About half a dozen species, one inhabiting Ceylon and the rest North and South 
America. 
1. Gymnopogon longifolius, Fourn. Mex. Pl. Enum., Gram. p. 144. 
SoutH Mexico, Vera Cruz (Gowin). 
2. Gymnopogon virletii, Fourn. Mex. Pl. Enum., Gram. p. 144. 
Norra Mexico, San Luis Potosi (Virlet d’Aoust). 
We have seen neither of the above-named species, and no reference is given to them 
in the ‘Genera Plantarum.’ Fournier observes :—‘* Ambo Gymnopogones supra descripti 
e descriptione typica generis recedunt glumis minoribus quam spicula.” 
[| Schedonnardus, a very distinct monotypic genus inhabiting Texas and New Mexico, 
close on our borders, probably occurs in Mexico. | 
69. BOUTELOUA. 
Bouteloua, Lag. Varied, Cienc. Liter. y Art. 1805, p. 141, et Elench. p. 5; Benth. et Hook. Gen. 
Plant. iii. p. 1168. 
An exclusively American genus of about twenty-five species, ranging from Illinois to 
California, Florida, Texas, West Indies, Mexico, and Brazil. . 
Bentham (in Journ. Linn. Soc. xix. p. 104) reduces Chondrosium, Desv., Atheropogon, 
Muehl., Eutriana, Trin., Dinebra, DC., Triathera, Desv., and Triena, H. B. K., &c., to 
Boutelowa, while Fournier retains them all, except Dinebra, as independent genera, and 
describes a number of new species under Chondrosium and Atheropogon, several of which 
we have not seen. §. Watson (Proc. Am. Acad. xviii. p. 178) reviews the species of 
Bouteloua in the Gray Herbarium as extended in the ‘ Genera Plantarum,’ but without 
any reference to Fournier’s species, so that without consulting the herbaria Fournier 
and Watson examined it is almost impossible to harmonize the labours of the two. 
Under these circumstances, in order to avoid unnecessarily multiplying names, Fournier’s 
unidentified species are enumerated below under the genera to which he refers them. 
Pentarrhaphis scabra, H. B. K. Nov. Gen. et Sp. i. p. 178, t. 60 (Kunth, Enum. PI. 
i, Suppl. p. 237; Fourn. Mex. Pl. Enum., Gram. p. 142; Benth. et Hook. Gen. Plant, 
iii, p. 1096), and perhaps also Pogonopsis tenera, Presl, Reliq. Henk. i. p. 333, t. 46 
(Benth. et Hook. loc. cit.), are Mexican grasses allied to Bouteloua. Fournier suggests 
that the figure of the former is incorrect; and the latter he doubtingly refers to the 
Andropogonee. 
