MANUAL OF THE GRASSES OF THE UNITED STATES 607 



base, the sheaths ciliate on the mar- 

 gin; blades usually folded at base, 4 

 to 10 cm. long, rarely longer, 3 to 8 

 mm. wide, stiffly papillose-ciliate on 

 the margin, the hairs 1.5 to 3 mm. 

 long; racemes on very slender finally 

 elongate peduncles, 1 or 2, rarely 3, 

 on the primary, 1 on the axillary 

 peduncles; racemes arching, 3 to 8 

 cm. long; spikelets about 1.5 mm. 

 long, elliptic-obovate, glabrous. % 

 — Sandy soil, mostly in low pine land 

 or flat woods, Virginia and Kentucky 

 to Florida and Mississippi. 



13. Paspalum setaceum Michx. 

 (Fig. 874.) Culms slender, erect, usu- FlGURE 874 ._ Pas ^ um setaceum . RaC e mei x i; two 



ally 30 tO 50 Cm. tall; Sheaths pilose; views of spikelet, and floret, X 10. (Hitchcock 300, 



J S. C.) 



densely grayish villous, the blades on 

 the average wider; racemes more 

 commonly 2; spikelets 1.8 to 1.9 

 mm. long, pubescent. % — Sandy, 

 mostly dry soil, barrens and flat- 

 woods, Long Island to Florida and 

 Texas; Mexico and Cuba. 



15. Paspalum supinum Bosc ex 

 Poir. (Fig. 876.) Culms relatively 

 stout, widely spreading, 30 to 90 cm. 

 tall; sheaths usually hirsute; blades 

 15 to 25 cm. long, 8 to 15 mm. wide, 

 hirsute; racemes usually 2 to 4, rarely 

 to 6, 4 to 10 cm. long; spikelets 

 elliptic-obovate, 2 mm. long, gla- 



Figuke 873. — Paspalum longepedunculatum. Jramcle, 

 X 1; two views of spikelet, and floret, X 10. (Nash 

 2074, Fla.) 



blades rather firm, erect or nearly so, 

 linear, about 10 to 12 cm. long, 2 to 

 6 mm. wide, densely pilose on both 

 surfaces and papillose-ciliate on the 

 margin; racemes on slender pedun- 

 cles, solitary or sometimes 2, arching, 

 5 to 7 cm. long; spikelets elliptic- 

 obovate, about 1.5 mm. long, gla- 

 brous or minutely pubescent. % 

 — Sandy soil, usually open woods, 

 mostly on or near the Coastal Plain, 

 Long Island to Florida and Texas; 

 Ohio and West Virginia to Tennessee; 

 Mexico. 



14. Paspalum debile Michx. (Fig. 

 875.) Differing from P. setaceum in 

 the stouter, more spreading culms, 

 the foliage more crowded at base, 



Figure 875. — Paspalum debile. Panicle, X 1; two 

 views of spikelet, and floret, X 10. (Nash 946, Fla.) 



