88 PANICACE^. 



Georgia, Cooley collection Mich. Agr. College in 1863 ; Ala., 

 Mohr in 1888. 



North Carolina to Florida and Louisiana. 



8. P. virgatum L. Sp. PI. 81 (1753). Var. pubiflorum Vasey, 

 Bull. Torr. Club, 13:107 (1886). 



Culms stout, 90-120 cm. high, dark at the nodes. Leaf-blades 

 smooth, hairy at the throat, 30 cm. long, 7-10 mm. wide. Panicle 

 15-20 cm. long. Spikes 12-15, flexuose, the lower 6-8 cm. long, 

 those above gradually growing shorter, rachis straight or flexuose, 

 less than 1 mm. wide. Spikelets flattened, soft-hairy, ovate, 

 acute, crowded in four or more rows, 2-2.5 mm. long, some of 

 them on pedicels of their own length; first and second glumes 

 3-nerved, third shorter, obtuse. 



Louisiana, A. B. Langlois. " Cuba, Mexico to Uruguay," 

 Grisehach. 



Var. platyoxon Doell. Leaf -blades 1.5-2 cm. wide; spikes 

 about 5, the lower 15 cm. long, rachis 3 mm. wide; spikelets oval 

 or subovate, smooth, 3 mm. long. 



Texas, RevercJion 703, in 1874, identified by Munro, now in 

 herbarium of Harvard University. 



9. P. csespitosum Fliigge, Monog. 161 (1810). P. Blodgettii 

 Chapm. Fl. S. States, 571 (1860). 



Culms slender, of few internodes, 20-40 cm. high. Leaf-blades 

 fiat, acute or acuminate, glabrous except at the base, 3-15 cm. 

 long, 7-10 mm. wide. Spikes 2-4, 4-6 mm. long, one terminal, 

 the others distant 5-7 cm. from each other, rachis less than 1 mm. 

 wide. Spikelets minutely pubescent, obovoid or oval, usually in 

 pairs in each row, pedicels as long as the spikelets, which are 1.5 

 mm. long, first and second glumes thin, 3-nerved. 



Florida, U. S. Dept. Agricul. from A. H. Curtiss. 



Florida, Cuba, Guiana. 

 10 P. Pittieri Hack. MS. 



A slender tufted diffuse grass, branching near the base, 15-20 

 cm. high. Leaf -blades hispid, acuminate, 2-6 cm. long, about 2.5 

 mm. wide. Spikes single, rarely in pairs, slender, 2-3 cm. long. 



