CLASSIFICATION. 93 



than the long one, linear, compressed, narrowing to a 

 point at the summit ; palea, like the flowering glume, 

 intermediate in length between it and the longer outer 

 glume ; scales none ; ligules very short ; ovary narrow, 

 pointed ; filaments slender ; anthers long ; styles thread- 

 shaped, erect, longer than the filaments; stigmas short, 

 feathery ; seed oblong, compressed. Species 1 : — stricta. 



Genus 23. Lepturus. Spikelets one- or two-flowered, 

 placed on alternate sides of a simple erect spike. Spe- 

 cies 1 : — incurvatus. 



Genus 24. Nardus. Spikelets simple, of one floret 

 only ; no outer glumes ; flowering glume narrow, pointed, 

 enclosing the palea, which is smaller, narrow and pointed ; 

 no scales; filaments three, slender, shorter than the 

 glume ; anthers oblong, very slightly notched ; ovary 

 oblong ; style single, slender, long, downy ; stigma 

 simple. Species 1 : — stricta. 



Genus 25. Elymus. Inflorescence spiked; spike- 

 lets containing more than one floret, sessile, not soli- 

 tary ; outer glumes lanceolate ; flowering glumes pointed 

 and awned ; palea fringed ; scales two, oblong, pointed, 

 fringed; filaments three,, slender, very short; anthers 

 oblong, more notched at the base than at the apex ; 

 ovary turbinate ; styles two, short ; stigmas feathery. 

 Species 1 : — arenarius. 



Genus 26. Hordeum. Spikelets in clusters of three 

 on each tooth of the rhachis ; rhachis jointed and break- 

 ing easily at each tooth; outer glumes narrow, pointed, 

 and terminating in bristly awns ; ovary turbinate.; styles 

 two, villous, reflexed ; stigmas feathery ; seed oblong, 

 swelling, angular, and pointed at each end, marked 

 above with a longitudinal furrow. Species 4: — 1. syl- 

 vaticum; 2. pratense ; 3. murinum; 4. maritimum. 



