MANUAL OF THE GRASSES OF THE UNITED STATES 639 



59. Panicum ovale Ell. (Fig. 1376.) Vernal culms 20 to 50 cm 

 tall, erect or ascending, rather stout, long-pilose below with ascending 

 or appressed hairs, often nearly glabrous above, the nodes bearded; 

 sheaths ascending-pilose; ligule 2 to 3 mm long, rather sparse; 

 blades 5 to 10 mm wide, the upper surface nearly glabrous except 

 for long hairs near the base and margins, the lower surface appressed- 

 pubescent; panicle 5 to 9 cm long; spikelets, 2.7 to 2.9 mm long. 

 Autumnal phase spreading-decumbent, the stiff culms rather loosely 



Figure 1376. — Panicum ovale. Two views of 

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



Figuke 1375.— Distribution of 

 Panicum pseudopubescens. 



branching from the middle and upper nodes. % — Dry sandy 

 woods, Coastal Plain, North Carolina to Florida; Kansas (Saline 

 County), Texas (Waller County) (fig. 1377). 



60. Panicum scoparioides Ashe. (Fig. 1378.) Vernal phase light 

 green; culms 30 to 50 cm tall, erect or ascending, pilose with ascending 

 hairs or nearly glabrous; sheaths pilose to nearly glabrous; ligule 2 to 3 

 mm long; blades 6 to 10 mm wide, sparsely hispid on the upper surface, 

 appressed-pubescent beneath; panicle 4 to 7 cm long; spikelets 2.2 

 to 2.3 mm long, pubescent. Autumnal culms erect or spreading, 

 sparingly branching from the upper and middle nodes. Ql — Dry 



Figure 1377.— Distribution of 

 Panicum ovale. 



Figure 1378.— Panicum scoparioides. Two 

 views of spikelet, and floret, X 10. 

 (Type.) 



sandy or gravelly soil, Vermont to Delaware; Michigan to Minnesota 

 and Iowa (fig. 1379). 



61. Panicum shastense Scribn. and Merr. (Fig. 1380.) Vernal 

 culms 30 to 50 cm tall, pilose with ascending hairs, the nodes short- 

 bearded; sheaths papillose-pilose, the hairs spreading; ligule sparse, 

 2 to 3 mm long; blades 6 to 8 mm wide, sparsely pilose on the upper 

 surface, pilose beneath; panicle 6 to 8 cm long; spikelets 2.4 to 2.6 

 mm long. Autumnal culms spreading, with geniculate nodes and 

 elongate arched internodes, rather sparingly branched from the middle 

 nodes. % — Moist meadows. Known only from Castle Crag, 

 Shasta County, Calif. 



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