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



Autumnal culms geniculate-spreading, branching from the middle 

 nodes. % — Low sandy woods, Coastal Plain, southeastern Vir- 

 ginia to Florida and Texas ; Cuba ; 

 Hispaniola; British Honduras (fig. 

 1421). 



86. Panicum patulum (Scribn. 

 and Merr.) Hitchc. (Fig. 1422.) 

 Vernal phase grayish olive-green; 

 culms geniculate-decumbent, as 

 much as 50 cm long, internodes 

 and sheaths densely velvety-pu- 

 berulent ; blades rather lax, spread- 

 ing, 4 to 8 cm long, 4 to 8 mm 

 wide, velvety-puberulent beneath, 

 pubescent above, ciliate at least 

 half their length ; spikelets as in P. 

 lancearium but densely pubes- 

 cent. Autumnal culms more 

 freely brandling than in P. lance- 

 arium, often forming large mats. 

 Q[ — Low moist woods, Coastal 

 Plain, southeastern Virginia to 

 Florida and Louisiana (fig. 1423). 



87. Panicum webberianmn 

 Nash. (Fig. 1424.) Vernal phase 

 usually purplish; culms rather 

 stout, erect or ascending, 20 to 50 

 cm tall, minutely puberulent to 

 glabrous; leaves somewhat 

 crowded below; sheaths glabrous 

 or nearly so; blades firm, ascend- 

 ing, often incurved or spoon- 

 shaped, 3 to 9 cm long, 4 to 12 

 mm wide, usually ciliate at the 

 subcordate base, glabrous; pani- 

 cle 4 to 10 cm long; spikelets 



2.3 to 2.5 mm long, purple-stained at base, glabrous or minutely 

 pubescent. Autumnal culms spreading or decumbent, flabellately 



Figure 1420. — Panicum lancearium. Plant, X 1; 

 two views of spikelet, and floret, X 10. (Chase 

 4545, S.C.) 





Figure 1421.— Distribution of 

 Panicum lancearium. 



Figure 1422. — Panicum patulum. Two 

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



branched at the middle and upper nodes. QJ. — Low phieland, 

 North Carolina, Georgia, and Florida. 



88. Panicum patentifolium Nash. (Fig. 1425.) Vernal culms 

 widely decumbent-ascending, slender, 25 to 55 cm tall, minutely 



