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AIRA FLEXUOSA. 
Linnxvs. Smirn. Hooxer anp Arnotr. Parnett. Bapinaton. 
ReIcHENBACH. Kocn. GReEvVILLE. WILLDENOW. 
Knapr. Scuraper. Lerrrs. Host. Scuresper. Orper. Enruart. 
PLATE XXII. 
Aira montana, Hupson. DicKson. 
Fe < Lerrs, (not Linn xvs.) 
“  scabro-setacea, Knapp. 
*  setacea, Huvpson. 
The Wavy Mountain Hair-Grass. 
Aira—To destroy. Flexuosa—Bending. 
A common Grass in England, Scotland, and Ireland, on heaths 
and upon hills, often growing amongst the heather. 
It is eaten by sheep. 
Abroad it is found in North America, France, Italy, Norway, 
Sweden, Lapland, and Germany. 
The spikelets are twice as large as in Avra caryophyllea. 
Stem upright, smooth, striated, rather flat, bearing three or four 
exceedingly narrow, long, smooth leaves, and numerous radical 
ones, with roughish striated sheaths, the uppermost one consider- 
ably longer than its leaf, and being crowned with an acute mem- 
branous ligule. Joints smooth. Inflorescence compound panicled ; 
colour pale brownish green. Panicle upright, with delicate, 
rough, triple-forked, spreading branches. Spikelets upright, of 
two awned florets, which do not protrude beyond the calyx; 
colour brownish glossy copper. Calyx consisting of two almost 
equal-sized membranous glumes, with somewhat rough keels, 
