690 



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



Figure 1045. — Panicum pampinosum. Two views of 

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



136. Panicum pampinosum Hitchc. 

 and Chase. (Fig. 1045.) Resembling 

 P. hirticaule, but freely branching 

 and with larger spikelet; spikelets 

 very turgid, about 4 mm. long; first 

 glume more than three-fourths the 

 length of the spikelet; second glume 

 and sterile lemma equal; fruit 2.2 

 mm. long. O — Mesas, Texas to 

 Arizona; Mexico. 



137. Panicum stramineum Hitchc. 

 and Chase. (Fig. 1046.) Resembling 

 P. hirticaule, but freely branching and 

 nearly glabrous throughout; blades 

 longer; spikelets more turgid, less 

 pointed, 3.2 to 3.7 mm. long, the first 

 glume about one-third the length of 

 the spikelet; fruit 2.2 mm. long, with 

 a prominent lunate scar at base. O 

 — Rich bottom lands and damp soil, 

 southern Arizona; northwestern Mex- 

 ico. 



Figure 1046. — Panicum stramineum. Two views of 

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



Panicum sonorum Beal. Robust, 60 

 cm. to 1 m. or more tall; sheaths 

 mostly papillose-hispid; blades elon- 

 gate, 15 to 30 mm. wide; panicles 

 large, drooping, brownish, densely 

 flowered; spikelets 3 to 3.3 mm. long, 

 lanceolate; first glume half to two- 

 thirds as long as the spikelet; second 

 glume slightly exceeding the sterile 

 lemma. O — Yuma, Ariz., pos- 

 sibly introduced. Northern Mexico. 

 Cultivated by Cocopa Indians, the 

 seed used for food. 



138. Panicum miliaceum L. Broom- 

 corn millet. (Fig. 1047.) Culms 

 stout, erect or decumbent at base, 20 

 to 100 cm. tall; blades more or less 

 pilose on both surfaces or glabrate, as 

 much as 30 cm. long and 2 cm. wide, 

 rounded at base; panicles usually 

 more or less included at base, 10 to 

 30 cm. long, usually nodding, rather 



Figure 1047. — Panicum miliaceum. 

 Two views of spikelet, and floret, 

 X 10. (Griffith 6490, India.) 



