A. Can. hirta, calyx slender erect, not branching. Mostly glabrous & often glaucous, leaves co- White, filiform somewhat rigid, mostly secund. Sheaths half the length of internods, mostly smooth & usually pilose ciliate at the throat, -tipule a minute annular fringe, pennile erect. Bractea solitary & 1 flowered or 2-3 fist & 2-3 flowered. Pistil in flexuose. Glumes long uncinate the lower shorter than the upper longer than the palea, rough on the mid ribbe - acute & often bifid when old. Paleas short, hended. Palea minutely scabrous, usually twisted arms Nearly equal 3-8 times as long as the one palea - upper palea minute, & only 2 veined, scarcely exceeding the ovary - Our styglotes, stigmas scarcely plumose - anthers shorter than the stigma - filament extremely delicate - squamule longer than the ovary - sub acute apic - view. A. pullens Pursh Fl. 2. p. 728 ! Mutt. Gen. I. p. 57. A. longisetus Steud. Syn. Gram. I. p. 420 ! A. fendleriana Steud l.c. !