MANUAL OF THE GRASSES OF THE UNITED STATES 



731 



FIGURE 1628 Distribution of 

 Andropogon scoparius. 



wllosissimus Kearney (Schizachyrium villosissimum Nash). Schiza- 

 chyrium acuminatum Nash was described from a specimen, otherwise 

 typical, having spikelets 10 mm long. ANDROPOGON SCOPARIUS var. 

 NEOMEXiclNus (Nash) Hitchc. (Fig. 1629.) Rachis and pedicels 

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

 west the species verges into this variety. 91 (Schizachyrium neo- 

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



7. Andropogon lit- 

 toralis 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. 91 

 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. 91 (Schizachyrium triaristatum Nash.) Sandy 

 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-cilia te except at base; sessile spikelet 8 to 



FIGURE 1629. Andropogon 



var. neomexi- 



XI. (Wooton,N. 



littora- 



woods, 



