590 MISC. PUBLICATION 200, TJ. S. DEPT. OF AGEICULTURE 



Figure 1240.— Paspa- 

 lum caespitosum. 

 Panicle, X 1; two 

 views of spikelet, and 

 floret, X 10. (Poi- 

 teau, Dominican 

 Republic.) 



27. Paspalum laxum Lam. (Fig. 1241.) Culms mostly 50 to 75 

 cm tall, compressed, rigid, ascending; blades more or less involute, 

 mostly 20 to 30 cm long, 3 to 8 mm wide, usually glabrous; racemes 

 usually 3 to 5, mostly remote, 3 to 10 cm long; 



spikelets about 2 mm long, 

 elliptic-obovate, the glume 

 pubescent. % (P. gla- 

 brum Poir.) — Sandy and 

 limestone soils, characteris- 

 tic of coconut groves, Key 

 West, Fla. ; West Indies. ' 

 8. Conjugata. — Stolonifer- 

 ous; blades flat; ra- 

 cemes 2, paired, rarely 

 a third below, slender; 

 spikelets flattened con- 

 cavo-convex, solitary, 

 silky-fringed. 

 28. Paspalum conjuga- 

 tum Bergius. (Fig. 1242.) 

 Extensively creeping, with 



Figure 1239.— Paspalum blodgcttii. long leafy Stolons and aS- 

 Panicle, X 1; two views of spikelet, j • i , n 



and floret, x io. (Simpson, Fia.) cending suberect flowering 



branches, 20 to 50 cm tall; 

 nodes of stolons usually conspicuously pilose; 

 blades rather thin, 8 to 12 cm long, 5 to 15 mm 

 wide, usually glabrous; racemes widely divaricate, 8 to 12 cm long; 

 spikelets 1.4 to 1.8 mm long, ovate, light yellow, the margin 



conspicuously ciliate fringed. % — 

 A common weed in cultivated 

 and waste ground, southern Florida 

 to Texas, south to Argentina; West 

 Indies (fig. 1243); tropics of Old 

 World. 



9. Dilatata. — Rather stout, in leafy 

 clumps; blades flat; racemes few 

 to numerous, spikelets in pairs, 

 flat, silky-fringed. 

 29. Paspalum dilatatum Poir. 

 Dallis grass. (Fig. 1244.) Culms 

 tufted, leafy at base, mostly 50 to 150 

 cm tall, ascending or erect from a de- 

 cumbent base; blades 10 to 25 cm 

 long, 3 to 12 mm wide; racemes usu- 

 ally 3 to 5, spreading, 6 to 8 cm long; 

 spikelets ovate, pointed, 3 to 3.5 mm 

 long, fringed with long white silky 

 hairs and sparsely silky on the surface. 

 % — In low ground, from rather 

 dry prairie to marshy meadows, New 

 Jersey to Tennessee and Florida, west to Arkansas and Texas; ad- 

 ventive in Oregon, Colorado, Arizona, and California; native of South 



Figure 1241. — Paspalum laxum. Panicle, 

 X 1; two views of spiklet, and floret, X 10. 

 (Richard's specimen in Paris Herbarium.) 



