GRAMINEA. 567 
| 75. JOUVEA. 
Jouvea, Fourn. in Bull. Soc. Bot. Belg. xv. p. 475; Benth. et Hook. Gen. Plant. iii. p. 1173. 
A dicecious monotype. 
1. Jouvea straminea, Fourn. in Bull. Soc. Bot. Belg. xv. p. 475, et Mex. Pl. 
Enum., Gram. p. 68. 
SoutH Mexico, on the sea-sand of the Pacific at San Augustin (Liebmann). 
. 76. OPIZIA. 
Opizia, Presl, Relig. Heenk. i. p. 298, t. 41. fig. 1 ad 11; Benth. et Hook. Gen. Plant, iii. p- 1173. 
A moneecious or dicecious monotype. 
1. Opizia stolonifera, Presl, Relig. Henk. i. p. 293; Steud. Gram. p. 214; 
Fourn. Mex. Pl. Enum., Gram. p. 135. 
Castostega anomala, Rupr. in Bull. Soc. Bot. Belg. ix. (reprint, p. 6), ex Fournier. 
SoutH Mexico, sand-hills of Vera Cruz (Galeotti, 5703; Gouin), Oaxaca (Liebmann), 
Acapulco (Henke), La Parada in the Sierra de Oaxaca at 8500 feet, Ocotlan in the 
valley of Oaxaca, and in fields around the Hacienda de Buenavista (Liebmann). 
Hb. Kew. 
Tribe XI. FESTUCEZ. 
Festucee, Benth. et Hook. Gen. Plant. iii. pp. 1076 et 1089. 
As understood by Bentham and Hooker, this is a large tribe, comprising sixty-nine 
genera and nearly 900 species. A very large proportion of the genera are small; no 
fewer than twenty-seven being monotypic, and fifty-five out of the total have six or 
fewer species. The bulk of the species belong to the genera Eragrostis, Poa, Festuca, 
and Bromus. There are eight subtribes, namely, Pappophoree, Triodiew, Arundines, 
Sesleriese, Eragrostez, Melices, Centothecee, and Eufestucez, some of which are ranked 
as independent tribes by other agrostologists. The Festuces are spread over the whole 
area of the Order. 
77. PAPPOPHORUM. 
Pappophorum, Schreb. Gen. Plant. p. 787; Benth. et Hook. Gen. Plant. iii. p. 1174. 
About twenty species, widely dispersed in the warmer regions of both hemispheres. 
‘We have seen only three Mexican species of the genus, and it is probable that the two 
proposed new ones in Fournier’s ‘Enumeratio’ are the same as those previously 
published by Munro and Watson. 
1. Pappophorum apertum, Munro ex Scribner in Bull. Torr. Club, ix. p. 148; 
S. Wats. in Proc. Am. Acad. xviii. p- 180. 
Texas to Arizona.—NortH Mexico, at Parras and Monclova, Coahuila (Palmer, 
1360, 13862). Hb. Kew. 
