GOO MISC. PUBLICATION 200, U. S. DEPT. OF AGRICULTURE 



13. Plicatula. — Perennials and annuals with compressed purplish 



culms; blades flat or folded; racemes few to several; spikelets 



rather turgid, drab, turning brown or dark olivaceous; fruit dark 



brown, shining. 



40. Paspalum plicatulum Michx. (Fig. 1264.) Culms in small 



tufts with numerous leafy shoots, suberect, 50 

 to 100 cm tall; blades folded at base, usually 

 flat above, rather firm, elongate, 3 to 10 mm 

 wide, usually pilose near base; racemes mostly 

 3 to 10, arcuate-spreading, 3 to 10 cm long; 

 spikelets usually 2.5 to 2.8 mm long, obovate- 

 oval, brown at maturity, glabrous or the 

 glume appressed-pubescent, the sterile lemma 

 with short transverse wrinkles just inside the 

 slightly raised margin. Ql — Open ground 

 or wet wood borders, 

 Georgia and Florida to 

 Texas, south to Argen- 

 tina ; throughout the 

 West Indies (fig. 1265). 

 41. Paspalum bos- 

 cianum Flugge. Bull 

 paspalum. (Fig. 1266.) 

 Rather succulent an- 

 nual, branching at base and commonly from 

 the middle nodes, usually conspicuously 

 brownish purple, glabrous as a whole ; culms 

 40 to 60 cm long, ascending or widely spread- 

 ing; sheaths broad, loose; blades 10 to 40 cm 

 long, 8 to 15 mm wide, papillose-pilose on 

 upper surface near base; racemes 4 to 12, usu- 

 ally 4 to 7 cm long; rachis 2 to 2.5 mm wide; 

 spikelets crowded, obovate-orbicular, 2 to 2.2 

 mm long, glabrous, rust-brown at maturity. 



Figure 1265.— Distribution of 

 Paspalum plicatulum. 



Figure 1264.— Paspalum plicatu- 

 lum. Panicle, X 1; two views 

 of spikelet, and floret, X 10. 

 (Chase 7061, Qa.) 



Figure 1266.— Paspalum boscianum. Panicle, X 1; two views of spikelet, and floret, X 10. 



(Kearney 152, Fla.) 



O (Depauperate specimens have been described as P. scrobiculatum 

 L.) — Moist or wet open ground, along ditches and ponds, some- 

 times a weed in cultivated fields, Pennsylvania (ballast), Virginia to 

 Florida, Louisiana, and Arkansas, south to Brazil (fig. 1267). 



