MANUAL OF THE GRASSES OF THE UNITED STATES 



single erect leafy branch; blades flat, 

 rather stiff, 10 to 30 cm. long, 8 to 

 15 mm. wide, stiffly papillose-ciliate 

 on the margin, sparsely papillose- 

 hirsute on both surfaces, or sca- 

 berulous only; racemes usually soli- 

 tary, 1 terminal and 1 from the axil 

 of the uppermost sheath, 6 to 20 

 cm. long; spikelets about 3.2 mm. 

 long, elliptic; first glume on the 

 primary spikelet minute, sometimes 

 obsolete, on secondary spikelet most- 

 ly half to three-fourths as long as 

 the spikelet. % — Meadows, sa- 

 vannas, open slopes, and banks, 

 southern Texas to Venezuela and 

 Argentina; Cuba. 



23. Paspalum monostachyum 

 Vasey. (Fig. 884.) Culms 1 to few 

 from horizontal scaly rhizomes, erect, 

 50 to 120 cm. tall; blades elongate, 

 slender, terete, firm; racemes 1 or 2, 

 10 to 30 cm. long; spikelets 3 to 3.5 



611 



Figure 885. — Paspalum langei. Panicle, X 1; two 

 views of spikelet, and floret, X 10. (Pringle 3991, 

 Mexico.) 



Figure 884. — Paspalum monostachyum. Raceme, X 1; 

 two views of spikelet, and floret, X 10. (Type.) 



mm. long, subovate-elliptic, the pedi- 

 cels of the pair nearly equal; first 

 glume often developed in few to 

 several of the primary spikelets, com- 

 monly wanting or rudimentary. % 

 (P. solitarium Nash.) — Moist places 

 in flat woods or coastal dunes, southern 

 Florida and Texas. 



24. Paspalum langei (Fourn.) 

 Nash. (Fig. 885.) Culms ascending, 

 30 to 100 cm. tall; blades flat, rather 

 thin, 10 to 40 cm. long, 6 to 15 mm. 

 wide, glabrous to sparsely pubescent, 

 the lower tapering to a narrow base; 

 peduncles 1 to 3 from the upper 

 sheath, often also from middle 

 sheaths; racemes 2 to 5, 4 to 10 cm. 

 long; spikelets 2.2 to 2.6 mm. long, 

 elliptic-obovate, pubescent and glan- 

 dular-speckled; first glume minute or 

 obsolete on the primary spikelet, 

 one-fourth to one-third as long as 

 the spikelet on the secondary. 01 

 (Dimorphostachys ciliifera Nash; Pas- 

 palum ciliiferum Hitchc.) — Moist 

 woods and shaded slopes and banks, 

 occasionally in open ground, mostly 

 at low altitudes, Florida, Louisiana, 

 Texas; Greater Antilles to Venezuela. 



