MANUAL OF THE GRASSES OF THE UNITED STATES 651 



93. Panicum oligosanthes Schult. (Fig. 1435.) Vernal culms 35 

 to 80 cm tall, appressed-pubescent, especially below; sheaths with 

 ascending papillose pubescence ; blades stiffly spreading or ascending, 

 6 to 14 cm long, 5 to 8 mm wide, glabrous or nearly so on the upper 



FIGURE 1433. Panicum scribnerianum. Plant, X 1; two views of spikelet, and floret, X 10. (Vernal 

 phase, McDonald 32, 111.; autumnal phase, Umbach 2365, 111.) 



surface, harshly puberulent beneath; panicle 6 to 12 cm long; spike- 

 lets long-pediceled, 3.5 to 4 mm long, subacute, sparsely hirsute. 

 Autumnal phase erect to spreading, branching freely from the upper 

 nodes. 91 Sandy, usually moist woods, Massachusetts to Mis- 



souri, south to Florida and Texas (fig. 1436). 



FIGURE 1434. Distribution of 

 Panicum scribnerianum. 



FIGURE 1435. Panicum oligosanthes. Two views of 

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



94. Panicum ravenelii Scribn. and Merr. (Fig. 1437.) Vernal 

 culms 30 to 70 cm tall, densely papillose-hirsute with ascending hairs, 

 the nodes short-bearded; sheaths hirsute like the culm; ligule 3 to 4 

 mm long; blades thick, 8 to 15 cm long, 1 to 2 cm wide, glabrous on 

 the upper surface, densely velvety-hirsute beneath; panicle 7 to 12 



