MANUAL OF THE GRASSES OF THE UNITED STATES 



80. Panicum concmnius Hitchc. 

 and Chase. (Fig. 989.) Vernal phase 

 bright green; culms very slender, 12 

 to 50 cm. tall; blades 5 to 7 cm. long, 

 5 to 6 mm. wide; panicle 3 to 6 cm. 

 long; spikelets 1.1 mm. long, pubes- 

 cent. Autumnal culms radiate-spread- 

 ing, late in the season bearing a few 

 branches, with somewhat reduced 

 blades. % — Moist sandy ground, 

 northern Georgia, Florida, and north- 

 ern Alabama, rare. 



81. Panicum ensifolium Baldw. ex 

 Ell. (Fig. 990.) Vernal culms 20 to 

 40 cm. tall, erect or reclining; blades 

 distant, often reflexed, 1 to 3 cm. 

 long, 1.5 to 3 mm. wide, puberulent 

 beneath, at least toward the tip; 

 panicle 1.5 to 4 cm. long; spikelets 

 1.3 to 1.5 mm. long, glabrous or 

 puberulent. Autumnal culms spread- 

 ing or reclining, sparingly branching 



667 



Figure 988. — Panicum flavovirens. Two views of 

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



Figure 989. — Panicu?n concinnius. Two views of 

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



from the middle nodes, the branches 

 mostly simple. % — Wet places, 

 mostly sphagnum bogs or swamps, 

 Coastal Plain, New Jersey to Florida 

 and Louisiana. 



82. Panicum vernale Hitchc. and 

 Chase. (Fig. 991.) Vernal phase light 

 green, soft in texture; culms 15 to 

 30 cm. tall, very slender, ascending 

 or spreading; leaves clustered at the 

 base; blades thin, 2 to 7 cm. long, 

 3 to 5 mm. wide, the culm blades 

 smaller; panicle 1.5 to 3 cm. long, 

 few-flowered; spikelets 1.4 to 1.5 mm. 

 long, elliptic, subacute, pubescent. 



Figure 990. — Panicum ensifolium. Plant, X 1; two 

 views of spikelet, and floret, X 10. (Biltmore Herb., 



N. C.) 



Figure 991. — Panicum vernale. Two views of spikelet, 

 and floret, X 10. (Type.) 



Autumnal phase like the vernal in 

 appearance, branching from the base, 

 these culms simple and soon dying 

 to the ground, rarely late in the sea- 

 son producing a few short fascicled 



