MANUAL OF THE GRASSES OF THE UNITED STATES 



561 



relatively long pediceled, about 2.3 mm long, glabrous; first glume 

 obsolete, the second glume one-fourth to one-half as long as the 

 dark brown fertile lemma; sterile lemma scarcely equaling the fruit. 

 91 — Sandy soil, high pineland, peninsular Florida, rare. A tall 

 plant from Grasmere with 3 to 5 racemes, the spikelets having second 

 glumes about two-thirds as long as the fertile lemma, has been differ- 

 entiated as D. bakeri (Nash) Fernald. 



12. Digitaria texana Hitchc. (Fig. 1174.) Perennial, erect or 

 somewhat decumbent and branching at base; culms 30 to 60 cm tall; 

 lower sheaths, rarely all the 

 sheaths, villous or velvety- 

 pubescent, the uppermost 

 glabrous; ligule prominent; 

 blades flat, the lower villous, 

 the upper glabrate, 10 to 15 

 cm long, 3 to 5 mm wide; 

 racemes mostly 5 to 10, slen- 

 der, pale, ascending or erect, 

 5 to 12 cm long, the axis 

 1 to 4 cm long; rachis angled, 



Figure 1174. 



-Digitaria texana. Plant, X Ij spikelet and 

 floret, X 10. (Type.) 



Figure 1173.— Digitaria qracillima. Plant, 

 X 1; two views of spikelet, and floret, 

 X 10. (Type.) 



the scabrous margins much narrower than the whitish center; spikelets 

 mostly rather distant, 2 to 2.5 mm long, from short-villous to nearly 

 glabrous, the silky hairs not at all capitellate; first glume obsolete; 

 second glume and sterile lemma as long as the pale acute fertile lemma. 

 % — Sandy oak woods or sandy prairie, southern Texas. 



13. Digitaria pauciflora Hitchc. (Fig. 1175.) Perennial; culms 

 erect or somewhat decumbent at base, 0.5 to 1 m tall, very slender, 

 sparingly branching; foliage grayish- villous, the blades 6 to 12 cm 



