i 
A 
Ss 
\ 
\| a b 
Fig. 135. Sitanion glabrum J. G. Smith. ORCHARD BARLEY. —a, A group © 
of of splices 6, one of pe teat Another species of the genus Sitanion is illus- 
ted by fig. 624 in Bul 
‘ Rafin. . Phys. 89 : 103. - (Bgilops Nutt., 1818, not 
Linn., 1737. ) Spikelets caer 2, sometimes 3, or ae only 1, at each j joint of 
e rachis of the nea 2 to several-flowered. pty glumes many- 
iti a 3d 
2 pty gl ne é } } i ti d; flowe wering 
= a aS PRES = r trifid, asd Sawned Palnans long 
as in 
as its glume, entire, b tiddatate of Sulened. Stamens, pistil, an 
from which genus Sitanion differs chiefly in its divided glumes and 
with which the axis ea caerbe agt ee eee 
Species about 25, mat Western North America and Mexico. 
