GRAMINEAE. 



Vol. I. 



12. Paspalum laeve Michx. 

 Fig. 299. 



Paspalum laeve Michx. Fl. Bor. Am. 1 : 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, 2i"-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 i" wide; spikelets 

 singly disposed, ii"-ii" long and i"-ij" wide, oval, 

 the outer 2 scales firm, 5-nerved, the lateral nerves 

 approximate. 



In fields and sandy places, Maryland to Florida and 

 Texas. 



11. Paspalum debile Michx. Yellow- 

 haired Paspalum. Fig. 298. 



Paspalum debile Michx. Fl. Bor. Am. 1 : 44. 



1803. 

 Paspalum supinum Bosc ; Poir. in Lam. Encycl. 



5: 29. 1804. 

 Paspalum dasyphyllum Ell. Bot. S. C. & Ga. 1 : 



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 s"^io" broad; racemes usually but 

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

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

 stout, the rachis about i" wide ; spikelets in 

 pairs, about 1" long and a little less than 1" 

 wide, broadly obovate, the first scale usually 

 more or less pubescent with glandular-tipped 

 hairs, 3-nerved, the second scale glabrous, 

 commonly 2-nerved. 



In dry sandy places, South Carolina to Mis- 

 souri, south to Florida and Texas. June-Sept. 



Field Paspalum. 



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 ii°-3i° 

 tall ; leaf -sheaths tuberculate-hirsute with long 

 spreading hairs, compressed; blades 1° long or 

 less, 3"-s" 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 

 1" wide, the outer 2 scales 5-nerved, the lateral 

 nerves near the margin, approximate. 



In fields and along roadsides, New Jersey to Mis- 

 souri, south to Florida and Alabama. Aug. 



