pebra winid. 
q@) ae Ae BrérP Rough Hairgrass, Ticklegrass. Culms 
slender, tufted, ‘erect, 15-70 cm. tall; sheaths smooth; ligules 2-3 mme 
long; basal Paces narrow, flat or folded, smooth, soft and lax, those of 
the culm scabrous, flat, usually rather fim, 5- ~10 cme long, 1=2 mm. wide; 
panicles diffuse, 5-25 cm. long, the capillary branches widely spreading, 
i ; very scabrous, ames bee na: only toward the ends; glumes acuminate, 10) =] 
{ nerved, 2 mane long, scabrous on the keels; lemmas 1.5 mm. long, awnless; 
palea wanting.’ 
3 
Meadows and wet places. 
dG 5+ A. exarata Trin... ——~—3Culms erect, 20-80 om. tall; sheaths smooth or 
scabrous; ligules 5-8 mm. long; blades flat, scabrous, 5-25 cm. long, 2-8 mm. 
wide; panicles dense, sometimes interrupted, 3-20 cm. long, the branches 
appressed, spikelet-bearing from the base; glumes acuminate, l-nerved, 2-3 mm. 
long, distinctly scabrousy over the back; lemmas about 2 mn. long, gui Baws 
palea very small or wantinz. (A. erandis Trin.; A. asperifolia Trin.), 
‘ 
. 
4 
: 
: 
s 
“4 
5 
b 
4 
a 
4 
: 
; 
Meadows, swamps, and moist places. 
6. Ae idahoensis Nash. Culms very slender, tufted, 10-40 cm. tall; sheaths 
} . > . 
smooth; ligules e-5 mne long; blades usually flat, scaberulous or nearly smooth, 
1-8 cm. long, rarely more than 2 ma. wide; panicles ssa 3-10 cme long, 
elow; glumes acute or acuminate, 
5 b 
er, eae Ln 1s oa 
ous on the keel; lemmas adous 1 mm. 
the branches slender, flexuous, spreedi 
1.5-2 mune long, smooth or somewhat 
, long, awnless; palea minute. 
ae 
