135 



FIG. 104. Eatonia Pennsylvania (DC.) A. Gray. EATON' S-GRASS.— a, A 

 spikelet: b, the empty glumes which have been separated from the three florets 

 above, c. Figs. 252 to 254 illustrate other species of this genus. 



104. EATONIA Rafin. Journ. Phys. 89 : 104. 1819. Spikelets 2- to 3-flowered; 

 rachilla articulated above the empty glumes and between the florets and pro- 

 duced above the upper flower into a slender, naked bristle. Empty glumes 2, a 

 little shorter than the florets, the 1st very narrow or linear and 1-nerved, the 

 2d broadly obovate, 3-nerved, with rather broad, scarious margins; flowering 

 glumes obtuse and usually awnless, the 2d floret sometimes short-awned from 

 the apex. Palea narrow, 2-nerved. Styles distinct, short; stigmas plumose. 

 Grain narrow, free. Rather slender tufted perennials, with usually flat leaves 

 and narrow but often lax, terminal, many-flowered panicles. 



Species 4 all natives of the Eastern United States, two extending westward 

 to the Rocky Mountains. 



