MANUAL OF THE GRASSES OF THE UNITED STATES 



649 



pubemlent to nearly glabrous; blades stiffly spreading, 2.5 to 8 cm 

 long, 2 to 5 mm wide, glabrous; panicle 3 to 7 cm long; spikelets 2.4 

 to 2.6 mm long, obovate, turgid, puberulent to nearly glabrous. 

 Autumnal phase, decumbent or spreading, branching from the middle 

 and upper nodes, the branches appressed. 9i Dry sand, espe- 



FIGURE 1423. Distribution of 

 Panicum patulum. 



FIGURE 1424. Panicum webberianum. Two 

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



dally in "scrub", Georgia to Florida and Mississippi (fig. 1426). 



13. Oligosanthia. Culms mostly relatively stout, usually erect; lig- 

 ules inconspicuous except in P. ravenelii; blades firm; spikelets 

 turgid, strongly 7- to 9-nerved. Autumnal culms with branches 

 more or less crowded toward the summit. 



FIGURE 1425. Panicum patentifolium. 

 Two views of spikelet, and floret, X 10. 

 (Type.) 



FIGURE 1426. Distribution of 

 Panicum patentifolium. 



89. Panicum wilcoxianum Vasey. (Fig. 1427.) Vernal culms 10 

 to 25 cm tall, copiously papillose-hirsute, as are sheaths and blades; 

 ligule 1 mm long; blades firm, erect, 5 to 8 cm long, 3 to 6 mm wide, 

 usually involute-acuminate; panicle 2 to 5 cm long; spikelets 2.7 to 



FIGURE 1428. Distribution of 

 Panicum wilcoxianum. 



FIGURE 1427. Panicum wilcoxianum. Two views 

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



3 mm long, papillose-pubescent. Autumnal culms branching from 

 all the nodes, forming bushy tufts with rigid erect blades. 21 

 Prairies, Manitoba, and North Dakota to Illinois and Kansas; New 

 Mexico (fig. 1428). 



