PANICE.E. 113 



spreading, 2-6 cm. from each other, some of the lowest enclosed, 

 3-6 cm. long, rachis fiat or involute, about 2 mm. wide. Spike- 

 lets single, imbricated little or none, sessile on alternate sides of a 

 ridge of the rachis, smooth, elliptical-ovate, almost acute, about 4 

 mm. long, first glume broad, thin, obscurely nerved, about 1 

 mm. long, second 7-nerved, floral glume of the neuter floret much 

 like the latter, 5-nerved, its palea a little shorter, upper floret 

 rugose, oval, 3 mm. long. This much resembles Paspahim. 



Texas, U. S. Dept AgricnJ. No. 88. collected by /. Rever- 

 cJion, E. Hall, G. C. Nealley. 



11. P. PLANTACxiNEUM Link, Hort. Berol. 1:206 (1827). 



Annual; culms branching below, 30-60 cm. high, from a creep- 

 ing or geniculate base. Margins of the sheaths and the ligule 

 ciliate-fringed. sheaths mostly longer than the internodes; blades 

 flat, smooth, 7-15 cm. long, 1-1.5 cm wide. Spikes about four, 

 3-5 cm. long, secund, the lowest partly included, the terminal one 

 on a pedicel nearly its own length, the others single, sessile, 2-4 

 cm. from each other. Sjiikelets single, alternating in two rows 

 along one side of a narrow rachis, those of the same row imbricate 

 or not, smooth, compressed, obovate-elliptical, about 4 mm. long, 

 first glume very broad, clasping the spikelet, 2 mm. long, 7-nerved, 

 second glume and floral glume of the neuter floret equal, broadly 

 oval when spread, the former 9-nerved, the latter 7-nerved, the 

 palea of the latter but little shorter, fertile floret oval, transversely 

 wrinkled, 3.5 mm. long. 



Sparingly introduced and found on ballast-ground at Philadel- 

 phia, Penn. 



12. P. prostratum Lam. III. 1: 171 (1701). P. ccespifosiim Sw. 

 Fl. Lid. Occ. 1:146 (1797). 



Tufted or creeping, much branched below, 30-50 cm. higli. 

 Sheaths inflated; blades thin, flat, broad at the base, hairy as well 

 as the sheaths, 7-15 cm. long. 6-10 mm. wide. Spikes 5-9, alter- 

 nate, ascending on 2-3 centimeters of the top of the exserted culm. 

 1-2 cm. long. Spikelets alternate in 2 rows on one side of the 

 hairy rachis. overlapping for al)out one-third of their length, sub- 

 sessile, smooth, oval, awniess, about 3 mm. long, first glume thin. 



