POACEAE. 19 



5. Faspalnm gUbnun Poir. in Lam. Encycl. 5 : 30. 1804. 



Paspalum Helleri Nash, Bull. Torr. Club 30: 376. 1903. 



Culms tufted, slender, glabrous, erect or ascending, simple, 3-10 dm. high. 

 Leaves 5-20 em. long, 3-8 mm. wide, roughish-margined, with a few hairs at 

 the base of the blade ; racemes 2—6, narrow, 10 cm. long or less, erect or spread- 

 ing; spiielets many, oval, glabrous or pubescent, 1.7-2 mm. long, obtuse. 



Moist grounds, Abaco and Great Sturrup Cay to Andros, North Caicos, Grand 

 Turk and Inagua : — Cuba to Tortola and Barbadoes ; Jamaica. Referred by Hitch- 

 cock to P. nanum C. Wright. 



6. Paspalum secans Hitch. & Chase, Contr. TJ. S. Xat. Herb. 18 : 319. 1917. 



Perennial, forming clumps ; culms simple, erect glabrous, 1-2 m. tall. Leaf - 

 sheaths with a row of white hairs at the mouth, the blades much elongated, 

 sometimes 1 m. long, 5-10 mm. wide, flat, but in drying more or less involute, 

 their margins serrulate ; racemes 5-20, slender, spreading, 5-15 cm. long ; rachis 

 glabrous; spikelets glabrous, about 2.5 mm. long, 1.5 mm. wide. 



Hoist soil. New Providence, Acklin's Island, and Inagna : — Cuba ; Porto Eico ; 

 Barbadoes ; Jamaica ; St. Croix ; Antigua. Referred by Nash to P. Schreberianum, 



TAU, PASPAI.U5I. 



7. Paspalum tnillegrana Schrad. in Schultes, ilant. 2: 175. 1824. 



Paspalum Vnderwoodn Nash, Bull. Torrey Club 30 : 375. 1903. 



Culms stout, 1-1.0 m. high, often clustered, smooth. Lower sheaths nodu- 

 lose, overlapping; leaves elongated, roughish, 5-10 mm. wide, commonly pu- 

 bescent above; racemes many, close toegther, ascending or nearly erect, 4^10 

 cm. long; spikelets glabrous, suborbicular or obovate-orbicular, about 2 mm. 

 long, usually purplish; rachis sparingly pilose. 



New Providence (according to Hitchcock and Chase) : — Jamaica : Cuba ; Porto 

 Rico ; Tobago ; Trinidad to southern Brazil. Undeewood's Paspai.t;m. 



8. Paspalum fimbrlatum H.B.K. Nov. Gen. & Sp. 1: 93. 1815. 



Annual; culms tufted, glabrous, often branched below, 3-8 dm. high, the 

 sheaths hirsute or glabrous. Leaves 1-2.5 dm. long, 1.5 cm. wide or less, 

 ciliate; racemes 2-6, erect or ascending, 2.5-7 cm. long; spikelets mostly in 

 pairs, suborbicular, 2.5-3.5 mm. long, the scales papUlose, 3-nerved, the lower 

 one with a broad cleft wing, with ciliate segments, the next with a similar 

 partial wing, the fruiting scale 7-ridged. 



Waste and cultivated grounds, Andros, New Providence, Eleuthera, Cat Island : 

 • — Cuba, Hispaniola and Porto Rico to Trinidad; Jamaica; South America. Fbisged 

 Paspalum. 



9. Paspaluia conjugatum Berg. Acta Helv. 7: 129. 1762. 



Smooth and glabrous. Culms compressed, 2-9 dm. taU, finally decumbent 

 at the base and rooting at the lower nodes ; leaves 4-16 cm. long, 4—12 mm. 

 wide; racemes in pairs, slender, often curved, spreading or ascending, 5-12 

 em. long, the rachis straight, or flexuous toward the apex, 0.6-0.8 mm. broad; 

 spikelets crowded, much compressed dorsaUy, singly disposed, 1.5 mm. long, 

 1-1.2 mm. broad, apiculate, the 2 outer scales 2-nerved, the nerves marginal, 

 the first scale ciliate on the margins with very long lax hairs, the third scale 

 smooth, white. 



Grassy places along roads, apparently introduced. New Providence : — Bermuda ; 

 Southern United States : Cuba to St. Thomas and Barbadoes : Jamaica ; continental 

 tropical America ; Old World tropics. Two-spiked Paspaluii. 



