GRAMINEAE. 



VOL. I. 



ii. Paspalum debile Michx. Yellow- 

 haired Paspalum. Fig. 298. 



Paspalum debile Michx. Fl. Bor. Am. i : 44. 



1803. 

 Paspalum supinum Bosc ; Poir. in Lam. Encycl. 



5: 29. 1804. 

 Paspalum dasyphyllum Ell. Bot. S. C. & Ga. i : 



105. 1817. 



A tufted branching yellowish green peren- 

 nial, with flat leaf-blades which are pubescent 

 with long yellowish hairs, and pubescent spike- 

 lets. Culms 8'-2 tall, stout; leaves densely 

 pubescent with long yellowish spreading hairs ; 

 blades flat, thick, lanceolate, 8' long or less, 

 usually 5"-io" broad; racemes usually but 

 little exserted, in 2's or 3's on the main culm, 

 single on the branches, 1-^-4' long, rather 

 stout, the rachis about V wide ; spikelets in 

 pairs, about i" long and a little less than i" 

 wide, broadly obovate, the first scale usually 

 more or less pubescent with glandular-tipped 

 hairs, 3-nerved, the second scale glabrous, 

 commonly 2-nerved. 



12. Paspalum laeve Michx. 

 Fig. 299. 



Paspalum laeve Michx. Fl. Bor. Am. 'i : 44. 1803. 

 Paspalum angustifolium Le Conte, Journ. de Phys. 91 : 



285. 1820. 

 Paspalum australe Nash, in Britton, Man. 1039. 1901. 



A nearly glabrous perennial, with flat leaf-blades 

 and glabrous spikelets. Culms i-3 tall; leaf- 

 sheaths glabrous, or hirsute on the margins, com- 

 pressed ; blades up to 16' long, 2j"-4" wide, erect or 

 nearly so, often drooping at the apex, glabrous, or 

 the upper surface more or less hairy ; racemes 2-6, 

 ii'-4' long, the rachis less than J" wide; spikelets 

 singly disposed, ll"-iY' long and i"-ii" wide, oval, 

 the outer 2 scales firm, s-nerved, the lateral nerves 

 approximate. 



In fields and sandy, places, Maryland to Florida and 

 Texas. 



In dry sandy places, South Carolina 

 souri, south to Florida and Texas. June 



Field Paspalum. 



to Mis- 

 -Sept. 



13. Paspalum plenipilum Nash. Many- 

 haired Paspalum. Fig. 300. 



Paspalum laeve pilosum Scribn. Bull. Univ. Tenn. 



Exp. Sta. 7: 34. 1894. Not P. pilosum Lam. 



1791. 



Paspalum plenipilum Nash, in Britton, Man. 73. 1901. 



Paspalum praelongum Nash, in Small, Fl. SE. U. S. 



74- 1903- 



A tufted pubescent perennial with flat leaf- 

 blades and glabrous spikelets. Culms ij-3l 

 tall ; leaf-sheaths tuberculate-hirsute with long 

 spreading hairs, compressed; blades i long or 

 less, 3"~5" wide, erect, hirsute on both surfaces 

 with long spreading hairs ; racemes 2-4, spreading 

 or ascending, 2'-4' long, the rachis about i" wide; 

 spikelets singly disposed, oval, about ii" long and 

 i" wide, the outer 2 scales s-nerved, the lateral 

 nerves near the margin, approximate. 



In fields and along roadsides, New Jersey to Mis- 

 souri, south to Florida and Alabama. Aug. 



