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



Figure 1410.— Distribution of 



Panicum ensifolium. 



Figure 1411. — Panicum ver- 

 nale. Two views of spikelet, 

 and floret, X 10. (Type.) 



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. Autumnal phase hive the vernal in appearance, branch- 

 ing from the base, these culms simple and soon dying to the ground, 

 rarely late in the sea- 

 son producing a few 

 short fascicled branch- 

 lets from the nodes, the 

 scarcely reduced flat 

 blades spreading. % 

 — Moist places, espec- 

 ially sphagnum bogs, 

 Florida to Mississippi. 

 80. Panicum curti- 

 folium Nash. (Fig. 

 1412.) Vernal culms 

 10 to 30 cm tall, slen- 

 der, weak, angled, erect 

 or spreading, sheaths 

 striate-angled, sparsely 

 pilose; ligule about 

 1 mm long; blades 

 spreading or reflexed, 

 1.5 to 3 cm long, 2 to 

 5 mm wide, thin, soft, 

 sparsely pilose on both 

 surfaces or nearly gla- 

 brous above; panicle 2 

 to 3 cm long; spike- 

 lets 1.4 mm long, gla- 

 brous or minutely 

 pubescent. Autumnal 

 culms weakly spread- 

 ing, branching from 

 the middle nodes, the 

 ultimate branches in 

 small fascicles toward 

 the summit of the 

 culm. Q[ — Boggy 

 soil and shady moist 

 places, sometimes 

 forming a rather dense 

 carpet, South Carolina 

 to Tennessee, south to 

 Florida and Louisiana 

 (fig. 1413). 

 81. Panicum chamaelonche Trin. (Fig. 1414.) Vernal culms 

 densely tufted, 10 to 20 cm tall, ascending; blades firm, ascending or 

 spreading, 1.5 to 4 cm long, 2 to 3 mm wide; panicle 2.5 to 5 cm long; 

 spikelets 1.1 to 1.2 mm long, glabrous. Autumnal culms freely 



Figure 1412.— Panicum curti- 

 folium. Two views of spike- 

 let, and floret, X 10. 

 (Type.) 



Figure 1413.— Distribution of 

 Panicum curtifolium. 



Figure 1409. — Panicum ensifoli- 

 um. Plant, X 1; two views of 

 spikelet, and floret, X 10. (Bilt- 

 more Herb., N.C.) 



Figure 1414. — Panicum cha- 

 maelonche. Two views of 

 spikelet, and floret, X 10. 

 (Type.) 



