GRAMINE^E 195 



41. NARDURUS, Rchb. 



Resembling Agropyrum; but spikelets stalked. Not 

 alpine. 



N. unilateralis^ Boiss. (tenellus, Rchb., Festuca tenui- 

 flora, Koch) ; spike unilateral, flowers generally with a 

 long awn ; dry places, rare ; Geneva, Valais, Saleve, 

 Dauphiny. N. Lachenalii, Godr. ; spike distichous, flower 

 usually not awned ; dry places ; Ticino, Aargau. 



42. HORDEUM, L. 



Spikelets 2-3 in each cluster, I -flowered. Not alpine. 



The English species H. murinum, L., Wild Barley, 

 very common by road-sides ; pratense, Huds. (secalinum, 

 Schreb.), meadows, rare ; and sylvaticum, Huds. (Elymus 

 europcsus, L.), mountain woods. 



43. GAUDINIA, Beauv. 



Resembling Agropyrum; but fruit contracted at the 

 apex, and ending in a small ciliated cup. Not alpine. 



G. fragilis, Beauv. ; spike long, slender, rachis geni- 

 culate, stem branching from the base ; road-sides ; Vaud, 

 Valais, Geneva, Jura. 



44. NARDUS, L. 



Spikelet solitary, secund, I -flowered; empty glumes o. 

 N. stricta, L., Mat Grass ; densely caespitose, leaves 

 setaceous, rigid, spikelets awned ; mountain pastures. 



