141 



Fig. 110. Pleuropogon sabinii R. Br.— a, Empty glumes; 5, spikelet with the 

 empty glumes removed; c, palea; d, flower. 



110. PliETJROPOGONR. Br. Suppl.App. Parry's Voy. 289. 1823. Spikelets 8- to 

 15-flowered; hermaphrodite; rachilla articulated above the empty glumes and 

 between the florets. Empty glumes at the base of the spikelet 2, membranaceous 

 or subhyaline, 1-nerved, or the 2d imperfectly 3-nerved, awnless, unequal; 

 flowering glumes longer than the empty ones, membranaceous or cartilag- 

 inous, 7-nerved, entire, or somewhat 2-toothed at the apex, with the midnerve 

 extending into a short mucro or awn. Palea a little shorter than the glume, 

 hyaline, 2-nerved, 2-keeled; the keels winged. Stamens 3. Styles short; 

 stigmas plumose. Grain free within the glumes. Soft, erect, annual or per- 

 ennial grasses, with flat leaves, and rather large spikelets in terminal racemes. 



Species 3, two in the United States and one in the Arctic regions. 



