74 FLORA. 



8. Paspalum dilatatum Poir. TALL PASPALUM. (I. F. f. 230.). Culms 

 erect, 9-18 dm. tall. Sheaths compressed, smooth and glabrous; leaves 3 dm. oi 

 more long, 4-10 mm. wide, sometimes with a tuft of hairs at the base; spikes 4-12, 

 5-12.5 cm. long, spreading, alternate; rachis of the spikes narrow, less than 2 mm. 

 wide, somewhat flexuous, scabrous; spikelets about 3 mm. long, in 3 or 4 rows 

 acute; outer scales 5 -nerved, the first villous on the margins, the second glabrous 

 or sparsely pubescent, the third nearly orbicular, minutely punctate-striate. In 

 moist soil, Va. to Fla., west to Tex. Aug.-Sept. 



9. Paspalum ciliatifolium Michx. CILIATE-LEAVED PASPALUM. Culms 

 tufted, erect, 4-8 dm. tall. Sheaths smooth and glabrous; leaves 5-25 cm. long, 

 6-15 mm. wide, smooth and glabrous on both surfaces, the margins conspicuously 

 ciliate with long hairs; racemes single or sometimes in 2's, 5-11 cm. long; spike- 

 lets in pairs, 1. 8-2. 1 mm. long and 1.5-1.8 mm. broad, oval to broadly obovate, 

 the empty scales 3 -nerved, or the midnerve rarely lacking in the second, glabrous. 

 In sandy or rocky soil, D. C. and Va. to Fla. and Miss. June-Sept. 



10. Paspalum stramineum Nash. STRAW-COLORED PASPALUM. Foliage 

 yellowish-green, the spikelets. and sometimes also the sheaths, pale straw,.color. 

 Culms tufted, 2-8 dm. tall; sheaths, all but the lower ones, glabrous except on the 

 margins; leaves erect or nearly so, firm, long-cilia te on the margins, otherwise 

 glabrous, 5-25 cm. long, 5-10 mm. wide; racemes 4-10 cm. long, usually in pairs, 

 rarely I or 3; spikelets in pairs, orbicular, 2 mm. in diameter, the first scale 3- 

 nerved, pubescent, the second scale 2-nerved, glabrous or nearly so. In sandy 

 places and fields, Neb., Kans. and Ind. Terr. July-Sept. {Paspalum ciliatifolium 

 Michx. in part.) 



11. Paspalum longipedunculatum Le Conte. LONG-STALKED PASPALUM. 

 (I. F. f. 233.) Culms reclining or decumbent, 3-4.5 dm. long, smooth, leafy at 

 base. Sheaths glabrous or ciliate on the margins, pilose at the throat; leaves 2.5- 

 8.75 cm. long, 4-6 mm. wide, ciliate on the margins and along the midnerve; pe- 

 duncles 1-2 from the upper sheath; spikes 1-2, 2.5-6.25 cm. long, more or less 

 curved; rachis very narrow, more or less flexuous; spikelets about 1.5 mm. long; 

 outer scales 3-nerved, the first one glabrous or sometimes sparsely pubescent; third 

 scale slightly exceeding the outer ones. Sandy soil, N. C. to Fla., Ky. and Term. 

 Aug.-Sept. 



12. Paspalum prostratum Nash. PROSTRATE PASPALUM. Culms pros- 

 trate, tufted, forming large, dense masses, 5-8 dm. long. Sheaths, as well as both 

 surfaces of the leaves, softly and densely pubescent with short hairs ; leaves erect 

 or nearly so, ciliate on the margins, 3.5-10 cm. long, 5-8 mm. wide; racemes 5- 

 7.5 cm. long, usually in pairs on the main culm; spikelets in pairs, about 2 mm. 

 long and 1.8 mm. wide, oval, the outer scales densely pubescent, the firt scale 

 3-nerved, the second scale usually 2-nerved by the suppression of the midnerve. 

 In dry sandy soil, southeastern N. Y. to- Del. Aug.-Sept. 



13. Paspalum Bushii Nash. BUSH'S PASPALUM. Culms erect, 8-10 dm. 

 tall, rather stout, lower sheaths pubescent, the others pilose on the margins; 

 leaves erect or ascending, 5-20 cm. long, 5-15 mm. broad, ciliate on the margins, 

 softly and densely pubescent on both surfaces with very short hairs; racemes IO-I2 

 cm. long, in 2's or 3*3 on the main culm; spikelets in pairs, 2-2.2 mm. long and 

 about 1.8 mm. broad, oval, the empty scales densely pubescent, 3-nerved, or 

 the second scale sometimes 2-nerved by the suppression of the midnerve. In dry 

 soil, Mo. Aug. 



14. Paspalum pubescens Muhl. PUBESCENT PASPALUM. Culms erect, 4- 

 8 dm. tall, pilose at the summit. Sheaths glabrous or nearly so; leaves 4-23 cm. 

 l.;ng, 3-6 mm. wide, rarely broader, densely long-pubescent on both surfaces; 

 rac'emes usually I, rarely 2, 6-12 cm. long; spikelets in pairs, glabrous, about 2 

 mm. long, oval, 1.51.8 mm. wide, the empty scales 3-nerved, or the second 2- 

 nerved by the suppression of the midnerve. In dry soil, N. J. and Pa. to Kans., 

 south to Fla. and Tex. Aug.-Sept. (Paspalum ciliatifolium Michx. in part.) 



15. Paspalum setaceum Michx. SLENDER PASPALUM. (I. F. f. 231.) 

 Culms mostly erect, 3-6 dm. tall, slender, smooth. Sheaths and leaves generally 

 very pubescent, the latter 7.5-20 cm. long, 26 mm. wide, erect, acuminate; 

 spikes 3.75-8.75 cm. long, more or less curved, generally solitary, occasionally 

 2, on a long-exserted slender peduncle, with usually I or 2 additional shorter pe- 



