1(32 



FIG. 130. Agropyron tenerum Vasey. SLENDER WHEAT-GRASS.— a, The 

 empty glumes which enclose the four florets b. 



130. AGROPYRON Gaertn. Nov. Comm. Acad. Sci. Petrop. 14 : 539. 1770. 

 Spikelets 3- to many-flowered, closely sessile and single at each notch of the axis; 

 rachilla articulated above the empty glumes under each flowering glume. 

 Empty glumes 2, narrower and usually shorter than the floral glumes, acute or 

 awned; flowering glumes rounded on the back, or slightly keeled above, 5- to 

 7-nerved, acute or awned. from the apex, rarely obtuse. Palea 2-keeled, bristly 

 ciliate on the keels. Grain pubescent at the apex, usually adherent to the palea. 

 Perennial grasses, with erect simple culms and terminal, often bearded spikes. 



Species about 35, distributed throughout all temperate countries. 



