250 
AIRA, hairgrass 
*¢Aira caryophyllea L,, silver hairgrass (Castaner, 1982b; Dunn, 
2) 
+A. elegantissima Schur, hairgrass [S: A. elegans Willd. ex 
Gaudin] (Kerguélen, 1975), p. 139 
ALOPECURUS, foxtail 
Alopecurus aequalis Sobol., floating foxtail, short-awn foxtail, 
152 
A. carolinianus Walter, common foxtail, Carolina foxtail, p. 152 
A. pratensis L., meadow foxtail, p. 152 
ANDROPOGON, beard grass 
(see also BOTHRIOCHLOA, SCHIZACHYRIUM) 
Andropogon elliottii Chapman, Elliott’s broomsedge, p. 247 
A. gerardii Vitman, big bluestem, p. 246 
var. chrysocomus (Nash) Fern, 
var. gerardii 
A. ternarius Michaux, splitbeard bluestem, p. 246 
virginicus L., broomsedge, p. 247 
var. virginicus 
ANTHOXANTHUM, vernal grass 
¢Anthoxanthum odoratum L., sweet vernal grass, p. 186 
APERA, silky bent grass 
[S: AGROSTIS] (McNeill, 1981) 
*Apera interrupta (L.) P. Beauv., Italian windgrass [S: Agrostis 
interrupta L.] (McNeill, 1981), p. 146 
oA. spica-venti (L.) P. Beauv., loose silky bent [S: Agrostis 
Spica-venti L.] (McNeill, 1981), p. 146 
S: Steyermark G: Great Plains Flora M: Mohlenbrock 
