568 1 GRAMINE. 
2. Pappophorum bicolor, Fourn. Mex. Pl. Enum., Gram. p, 133. 
Soura Mexico, Cerro de las Minas and Toluca (Karwinski). 
3. Pappophorum laguroideum, Schrad. in Roem. et Schult. Mant. ii. p. 342; 
Doll in Mart. Fl. Bras. ii. 8, p. 59; Fourn. Mex. Pl. Enum., Gram. p. 133. 
Souta Mexico, Colipa (Karwinski), Pas de Dofia Juana, and Quiotepec (Liebmann).—- 
MARTINIQUE and Braziu to Unvevay. Hb. Kew. | 
Grisebach (Fl. Brit. W. Ind. p. 537) combines this with P. alopecuroides, Vahl, the- 
only species he records from the British West Indies, and he cites plates 131 and 132 
of Kunth’s ‘ Revisio’ as also belonging to it, while Nees and Déll retain P. laguroideum. 
as an independent species more from want of evidence to the contrary than anything 
else. A revision of the whole genus would doubtless lead to a considerable reduction of 
the proposed species. Bentham (MSS. in Herb. Kew) has named Watson’s P. wrightit,. 
P. pallida, R. Br. var.%, and Scribner (Bull. Torr. Club, ix. p. 148) seems to have held. 
the same view. 
4. Pappophorum mexicanum, Griseb. ex Fourn. Mex. Pl. Enum., Gram. 
p. 133. | 
SourH Mexico, valley of Mexico (Bourgeau ; Schaffner). 
5. Pappophorum wrightii, S. Wats. in Proc. Am. Acad. xviii. p. 178. 
Texas; New Mextco.—Norta Mexico, Parras (Palmer, 1361), region of San Luis- 
Potosi (Parry & Palmer, 947); Sourn Mexico, valley of Mexico (Schaffner). Hb. Kew. 
Torrey (in Pacific Railr. Rep. iv. p. 155) refers the Texan and New-Mexican speci- 
mens to P. boreale, Griseb. Respecting other conflicting views, see the remarks under. 
P. laguroideum. 
[Cottea pappophoroides, Kunth (Revis. Gram. i. t. 52), a very distinct grass of this. 
affinity found in Texas, on the coast of Peru and in Tucuman, probably occurs within 
our limits. | 
78. TRIODIA. 
Triodia, R, Br. Prodr. Fl. Nov. Holl. p. 182; Benth. et Hook. Gen. Plant. iii. p. 1175. 
There are upwards of twenty species in Europe, North and South America, South. 
Africa, Australia, and New Zealand. 
1. Triodia avenacea, H. B. K. Nov. Gen. et Sp. i. p. 156, t. 48, 
Uralepis avenacea, Kunth, Revis. Gram. i. p. 108, et Enum. Pl. i. p. 318; Nees in Linnea, xix. 
p. 693; Fourn. Mex. Pl. Enum., Gram. p.110; 8. Wats. in Proc. Am. Acad. xviii, p. 180. 
Kelera avenacea, Spreng. Syst. Veg. i. p. 332. 
Norra Mexico, San Luis Potosi (Schaffner, 1008, 1009; Palmer, 950); Sourn. 
Mexico, Tacubaya (Schaffner), Guadalupe, valley of Mexico (Bourgeau, 678), Chapul-. 
tepec and Pefiol de los Bafios 7150 feet (Humboldt & Bonpland), Hb. Kew. 
