260 
ELYMUS, wild rye 
[S, G: incl. native AGROPYRON, 
HYSTRIX, SITANION; M: incl. 
native AGROPYRON, SITANION] 
(Estes and Tyrl, 1982; Arnow, 1987) 
Elymus canadensis L., Canada wild rye, p. 130 
var. canadensis [S, M: incl. E. villosus Muhlenb. f. 
arkansanus (Scribner & C. Ball) Fern., f. villosus; G: 
incl. E. villosus] (Gould, 1975) (note that the 
infraspecific taxonomy of this species requires further 
study) 
E. diversighumis Scribner & C. Ball [S: E. interruptus 
Buckley] (Church, 1967), p. 128 
*+E. elongatus (Host) Runem. [Agropyron elongatum (Host) P. 
auv.] (Miihlenbach, 1979; Arnow, 1987) 
E. glaucus Buckley, blue wild Tye, p. 128 
E. hystrix L.. bottlebrush grass [S, G: Hystrix patula Moench] 
(Gould, 1947; Bowden, 1964), p. 132 
f. bigelovianus (Fern.) Dore [S: Hystrix patula f. 
igeloviana (Fern.) Gleason; M: E. hystrix var. 
bigeloviana (Fern.) Bowden] (Gould, 1947; Bowden, 
1964; McNeill and Dore, 1976) 
f. hystrix 
+E. longifolius (J. G. Smith) 
longifolium J. G. Smith; G: S. hystrix (Nutt.) J. G. 
sirix (Nutt.) J. G. Smith] (Gould, 1974), p. 132 
ould, quack grass [S: Agropyron repens (L.) P. 
db.) Gould, western wheat grass [S, G: Agropyron 
Smithii Rydb.; M: A. Smithii, incl. var. m 
‘ . molle 
em & J. G. Smith) M. E. Jones] (Gould, 1947), 
p. 
S: Steyermark G: Great Plains Flora M: Mohlenbrock 
