MANUAL OF THE GRASSES OF THE UNITED STATES 



681 



155. Panicum verrucosum Muhl. (Fig. 1536.) Bright green, at 

 first erect, later widely spreading; culms 20 to 150 cm long; blades 

 thin, flat, lax, 5 to 20 cm long, 4 to 10 mm wide; panicles 5 to 30 cm 



Figure 1524.— Panicum 

 stipitatum. Two views 

 of spikelet, and floret, 

 X 10. (Commons 305, 

 Del.) 



Figure 1525.— Distribution of 

 Panicum stipitatum. 



Figure 1526.— Pa n i c u\m 

 longifolium. Two views 

 of spikelet, and floret, 

 X 10. (Type.) 



long, about as wide, diffuse, small panicles often produced at the 

 lower nodes; spikelets 1.8 to 2.1 mm long, elliptic-obovate, subacute, 

 roughened with small warts. O — Wet, mostly shady soil, Massa- 

 chusetts to Florida, west to Michigan, Tennessee, and Texas (fig. 1537). 



Figure 1527.— Distribution of 

 Panicum longifolium. 



Figure 1528.— Panicum 

 combsii. Two views of 

 spikelet, and floret, X 10. 

 (Type.) 



Figure 1529.— Distribution of 

 Panicum combsii. 



156. Panicum brachyanthum Steud. (Fig. 1538.) Culms 30 to 

 100 cm tall; blades 5 to 15 cm long, 2 to 3 mm wide; panicles 5 to 15 



Figure 1530.— Panicum 

 anceps. Spikelet and 

 floret, X 10. (Type.) 



Figure 1531.— Distribution of 

 Panicum anceps. 



Figure 1532.— P anicum 

 rhizomatum. Spikelet 

 and floret, X 10. (Type.) 



cm long, the branches few; spikelets 3.2 to 3.6 mm long, fusiform, 

 acute, tuberculate-hispid. o — Sandy soil, Louisiana, Texas, and 

 Oklahoma. 



13. Urvilleana. — Robust perennials; spikelets large, densely villous; 

 fertile lemma long-villous on the margin. 



