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



sheaths often glandular-mottled; blades glabrous, 5 to 10 mm wide, 

 the upper usually reflexed ; panicle ovoid, 5 to 8 cm long, many-flow- 

 ered; spikelets elliptic, 2 mm long, pubescent. Autumnal phase erect 

 or reclining, the branchlets and foliage forming large clusters from the 



Figure 1310.— Panicum microcarpon. Plant, X 1; two views of spikelet, and floret, X 10. (Maxon and 



Standley 86, Aid.) 



nodes of the- primary culms. % — Low moist or marshy ground, 

 Coastal Plain, Virginia to Florida and Texas; Missouri (Carter 

 County); Bahamas, Cuba (fig. 1313). 



Figure 1311.— Distribution of 

 Panicum microcarpon. 



Figure 1312.— Pan icu m nitidum. Two 

 views of spikelet, and floret, X 10. 

 (Type.) 



Figure 1313.— Distribution of 

 Panicum nitidum. 



27. Panicum annulum Ashe. (Fig. 1314.) Vernal phase usually 

 purplish, in small tufts or solitary; culms 35 to 60 cm tall, the nodes 

 densely bearded; sheaths velvety-pubescent or the upper nearly gla- 

 brous; blades densely velvety-pubescent on both surfaces; panicle 6 to 



Figure 1314.— Panicu m annulum. 

 Two views of spikelet, and floret, 

 X 10. (Type.) 



Figure 1315.— Distribution of 

 Panicum annulum. 



8 cm long; spikelets 2 mm long, elliptic, pubescent. Autumnal phase 

 suberect, bearing in late autumn a few short erect branches at the 

 upper nodes. % —Dry woods, Coastal Plain, rare, Massachusetts 

 to Florida and Mississippi; Michigan; Missouri (fig. 1315). 



