578 GRAMINEA. 
90. UNIOLA. 
Uniola, Linn. Gen. Plant. n. 85; Benth. et Hook. Gen. Plant. iti. p. 1192. 
Bentham and Hooker record the number of “ genuine species” as four, all of which 
inhabit North America, and one of them extends to South America. Besides these, 
there is the very distinct West-Indian U. racemifiora, Trin. 
1. Uniola paniculata, Linn. Sp. Pl. ed. 1, p. 71; Kunth, Enum. Pl. i. p. 420 ; 
Griseb. Fl. Brit. W. Ind. p. 531; Nees in Seem. Bot. Voy. ‘ Herald,’ p. 225; Fourn. 
Mex. Pl. Enum., Gram. p. 122. 
Briza caroliniana, Lam. Ill. i. p. 187, t. 45. fig. 3. 
Vireinia to Frorma. Puerto de Santa Cruz on the Pacific, Oaxaca (Liebmann) ; 
Panama (Seemann).—Cotompia to Ecuapor. Hb. Kew. 
Uniola effusa, U. miilleri, and U. lugens, Fournier (Mex. Pl. Enum., Gram. pp. 122 
et 123), we have been unable to identify, not having corresponding numbers of the 
different collections cited. Bentham (Journ. Linn. Soc., Bot. xix. p. 122) doubts their 
being congeners of U. paniculata. 
91. DISTICHLIS. 
Distichlis, Rafin. in Journ. Phys. Ixxxix. p. 104; Benth. et Hook. Gen. Plant. iii. p. 1193. 
There are four or five species “or very distinct varieties” (Bentham) inhabiting 
North America and Andine and Extra-tropical South America; one of them is also 
found in maritime districts of Australia. The Mexican specimens in the Kew herbarium . 
seem to represent three species, and we follow Fournier for their distribution, but with 
great doubts as to the limits of the species, which need a careful comparison with the 
North-American forms. 
1. Distichlis condensata, Hemsl. 
Brizopyrum condensatum, Fourn. Mex. Pl. Enum., Gram. p. 121. 
_ Poa condensata, Kunth, Enum. Pl. i. p. 344. 
Megastachya condensata, Presl, Relig. Heenk. i. p. 284. 
SovtH Mexico, Puerto de Santa Cruz, on the Pacific (Liebmann), Pochutla, Laguna, 
and Zapatango (Liebmann). Hb. Kew. 
2. Distichlis prostrata, Desv. in Gay, Fl. Chil. vi. p. 398. 
Poa prostrata, H. B. K. Nov. Gen. et Sp. i. p. 157; Kunth, Revis. Gram. ii. p- 461, t. 144, et 
Enum. Pl. i. p. 826. 
Uniola prostrata, Trin. in Mém. Acad. St. Pétersb. 1838, Suppl. p- 55; Rupr. in Bull. Acad. Brux. 
ix. (reprint, p. 8). | 
Megastachya prostrata, Roem. et Schult. Syst. Veg. ii. p. 590. 
Brizopyrum prostratum, Benth. ex Fourn. Mex. Pl. Enum., Gram. p. 120, cum varietatibus 6 et y. 
Norra Mexico, San Luis Potosi (Virlet @ Aoust); Sour MExtco, valley of Mexico 
(Bourgeau, 223), Orizaba (Liebmaun), Tehuacan de las Granadas, Puebla at 5500 feet 
(Galeotti, 5746).—Venezvueva to Cutt. Hb. Kew. 
