MANUAL OF THE GRASSES OF THE UNITED STATES 



663 



114. Panicum reptans L. (Fig. 1471.) Culms ascending 10 to 30 

 cm above the creeping base; blades 1.5 to 6 cm long, 4 to 12 mm wide, 

 cordate, usually glabrous, cilia te on the undulate margin at base; 

 panicle 2 to 6 cm long, the 3 to 12 ascending or spreading racemes 2 



Figure 1471.— Panicum reptans. 

 Two views of spikelet, and 

 floret, X 10. (Type of P. pros- 

 tratum Lam.) 



Figure 1472.— Distribution of 

 Panicum reptans. 



to 3 cm long, aggregate, the rachis usually pilose with long weak hairs; 

 spikelets secund, about 2 mm long, glabrous, on pubescent pedicels 

 about 1 mm ; first glume very short, truncate or rounded, o ■ — Moist 

 open ground, or a weed in cultivated fields, Florida to Texas 

 (fig. 1472); tropical regions of both hemispheres. 



Figure 1474.— Distribution of 

 Panicum fasciculatum. 



Figure 1473. — - Panicum fasciculatum. Two 

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



115. Panicum fasciculatum Swartz. Browxtop millet. (Fig. 

 1473.) Culms erect or spreading from a decumbent base, 30 to 100 

 cm tall, sometimes pubescent below the panicle or hispid below the 

 appressed-pubescent nodes, the more robust freely branched from the 

 lower nodes; sheaths glabrous to papillose-hispid; blades 4 to 30 cm 



Figure 1475.— Panicum adspersum. Two 

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



Figure 1476. — Panicum arizonicum. Two views of spike- 

 let, and floret, X 10. (Palmer 159, Mex.) 



long, 6 to 20 mm wide, glabrous; panicle 5 to 15 cm long; the racemes 

 5 to 10 cm long; spikelets yellow or bronze-brown, 2.1 to 2.5 mm long, 

 rarely 3 mm, obovate, turgid, glabrous, strongly transversely wrinkled 



