AIR A FLEXUOSA. 



AIRA FLEXUOSA. 



LINNAEUS. SMITH. HOOKER AND ARNOTT. PARNELL. BABINGTON. 



REICHENBACH. KOCH. GREVILLE. WILLDENOW. 

 KNAPP. SCHRADER. LEERS. HOST. SCHREBER. OEDER. EHRHART. 



PLATE XXII. 



Aira montana, HUDSON. DICKSON. 



" " LEERS, (not LINNAEUS.) 



" scabro-setacea, KNAPP. 



" se/acea, HUDSON. 



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 Aira 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 considerably longer 

 than its leaf, and crowned with an acute membranous 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, 

 but destitute of lateral ribs. Florets of two equal-sized palese, the 

 exterior one of lowest floret having a bifid apex; base hirsute, with 

 two delicate ribs on either side. Keel roughish, and having a slender 



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