Fic. 71. us (L.) Beauv. (Avena elatior L.). TALL OAT- 
GRASS. —a, A is aineien S tb, the paca with oa empty gtumes removed. The first 
floret is long-awned, while the second floret is short-awned or nearly awnless 
7l. ARRHEN. Beauy. . 1812. nec mttie a the 
first or lower flower staminate, its glume bearing a twisted and geniculate awn 
on the back near the base; the upper flower habnenheneitn. a va ee 
awned from or nese the tip, or bu erie rachilla hairy, articulated above the 
empty glumes, r r bristl e behind the pales 0 of 
the upper flower. = g 1 th 
ous. Flowering es firmer in tex ture Se cos empty 0 ones, 5-to 7-nerved, 
closely past ta tg Palea minently 2-nerved. Stigmas sessile. Usually 
tall perennials, with flat leaves and long, narrow pani icles. 
Species he in the Old World. One introduced and naturalized in the 
_ United Sta’ 
