MANUAL OF THE GRASSES OF THE UNITED STATES 665 



obovate-elliptic, densely hirsute to glabrous, o Open sandy or 

 stony ground, or in cultivated soil, western Texas to southern Cali- 

 fornia; introduced in North Carolina, South Carolina, Florida, and 

 Mississippi; Mexico (fig. 1477). 



118. Panicum texanum Buckl. TEXAS MILLET. (Fig. 1478.) 

 Culms erect or ascending, often decumbent and rooting at the lower 

 nodes, 50 to 150 cm or even to 3 m long, softly pubescent at least 

 below the nodes and below the panicles; sheaths softly pubescent, 

 often papillose; blades 8 to 20 cm long, 7 to 15 mm wide, softly pubes- 

 cent; panicle 8 to 20 cm long, the branches 



short, appressed, loosely flowered, the axis and 



rachises pubescent, with long hairs intermixed; 



spikelets 5 to 6 mm long, fusiform, pilose, often 



obscurely reticulate, o Prairies and open 



ground, especially on low land along streams, 



often a weed in fields, Texas ; introduced at sev- 

 eral localities, North Carolina to Florida and 



Oklahoma; Arizona ; northern Mexico (fig. 1479). 



4. Dichotomiflora. Somewhat succulent branching annuals; blades 

 flat, panicles many-flowered, the branchlets short and appressed 

 along the rather stiff main branches; spikelets short-pediceled, 

 7-nerved, glabrous; first glume short, broad; fruit smooth and 

 shining. 



119. Panicum dichotomiflorum Michx. FALL PANICUM. (Fig. 

 1480.) Culms ascending or spreading from a geniculate base, 50 to 



FIGURE 1479. Distribution of 

 Panicum texanum. 



J-H 



FIGURE 1480. Panicum dichotomiflorum. Panicle, X 1; two views of spikelet, and floret, X 10. 



(Deam, Ind.) 



100 cm long, or in robust specimens as much as 2 m long; ligule a 

 dense ring of white hairs 1 to 2 mm long; blades sometimes sparsely 

 pilose on the upper surface, 10 to 50 cm long, 3 to 20 mm wide, the 

 white midrib usuaUy prominent; panicles terminal and axillary, 

 mostly included at base, 10 to 40 cm long or more, the main branches 

 ascending; spikelets narrowly oblong-ovate, usually about 2.5 mm 

 long, acute, o Moist ground, along streams, and a weed in waste 

 places and cultivated soil, Maine to Nebraska, south to Florida and 

 Texas, occasionally introduced further west; here and there in the 

 West Indies (fig. 1481). PANICUM DICHOTOMIFLORUM var. puniTAN6- 

 RUM Svenson. Differing in the shorter, more slender culms and 



