MANUAL OF THE GRASSES OF THE UNITED STATES 731 



Figure 1628.— Distribution of 

 Andropogon scoparius. 



villosissimus Kearney (Schizachyrium villosissimum Nash). Schiza- 

 chyrium acuminatum Nash was described from a specimen, otherwise 

 typical, having spikelets 10 mm long. Andropogon scoparius var. 

 neomexicanus (Nash) Hitchc, (Fig. 1629.) Rachis and pedicels 

 copiously villous, the rachis mostly nearly straight. In the South- 

 west the species verges into this variety. % (Schizachyrium neo- 

 mexicanum Nash.) — Sandy soil and rocky hills, Texas to Arizona. 



7. Andropogon lit- 

 t oralis Nash. (Fig. 

 1630.) Resembling A. 

 scoparius, but culms 

 more compressed, with 

 broad keeled overlap- 

 ping lower sheaths, 

 often bluish-glaucous, 

 the flat tufts crowded 

 on a short rhizome, decumbent or bent at 

 base; blades 4 to 6 mm wide; rachis joints 

 and pedicels copiously long-villous. % 

 — Sandy seashores, Staten Island, N.Y., 



New Jersey, and Dela- 

 ware; Ohio (Sandusky); 

 Indiana (sand dunes of 

 Lake Michigan); Texas 

 (Padre Island). Typical 

 specimens are strikingly 

 different from A. scopa- 

 rius, but Texas plants 

 with copiously villous 

 racemes are less distinct 

 in habit. 



8. Andropogon stoloni- 

 fer (Nash) Hitchc. (Fig. 

 1631.) Resembling A. 

 scoparius, but the culms 

 solitary or few in a tuft 

 and with creeping scaly 

 rhizomes; foliage usually 

 glabrous, rarely villous ; 

 first glume of both sessile 

 and pedicellate spikelets 

 sometimes bifid at apex; 

 sessile spikelet 5 to 7 mm 

 long. Ql {Schizachyrium triaristatum Nash.) — Sandy woods, 

 southern Georgia and Florida. 



9. Andropogon maritimus Chapm. (Fig. 1632.) Culms solitary, 

 compressed, ascending from a decumbent, short-noded base, 50 to 60 

 cm long, branching toward the ends, and with long creeping rhizomes; 

 sheaths overlapping on the short internodes, strongly keeled, com- 

 monly reddish; blades 3 to 5 mm wide, often folded and reflexed, 

 the midnerve deeply impressed; raceme 4 to 6 cm long, the base 

 included in the dilated sheath, the rachis very flexuous, the joints 

 and pedicels copiously long-ciliate except at base; sessile spikelet 8 to 



Figure 1629.— Andropogon 

 scoparius var. neomexi- 

 canus, X 1. (Wooton, N. 

 Mex.) 



Figure 1630.— Andropogon littora- 

 tis, X 1. (Burk, N.J.) 



