FESTUCE.E. 491 



glume obscurely 3-nerved, narrower, obtuse or ucutisli, jiwnless or 

 in one case with a bent awn on the back, compressed, cl)iirtaceous; 

 palea narrow, hyaline, 2-nerved. Stamens 3. Grain linear-oblong, 

 not grooved, enclosed, but not adherent. 



Tufted slender perennials. 



Tliere are six species, all found in temperate North America. 



A. Lower blades filiform 1 



B. Lower blades flat (a) 



a. Floral glume often with a bent awn 2 



a. Floral glume awnless (b) 



b. Upiier blades 3-5 cm. long, panicle very simple 



and narrow 3 



b. L^pper blades 8-13 cm. long, panicles stouter, race- 

 mose (c) 



c. Panicle dense, second and tliird glumes about 



2 mm. long 4 



c. Panicle las, second and third glumes 3.2—3 mm. 



long 5 



c. Panicle lax, second and third glumes about 4 



mm. long G 



I.E. filiformis (Chapm.) Vasey, Coult. Hot. Gaz. 11:117 

 (1880). E. Pcnnsijlvaniva var. JiUfonnix ('ha])ni. Man. Fl. S. 

 States 5(50 (1800). 



Culms very slender, 30-70 cm. high. Sheaths very shortly 

 woolly-pubescent; blades soft, rigid, filiform, those of the sterile 

 shoots 30-50 cm. long, the upper JJ-S em. long, Paniele very 

 slender and narrow, the few racemose rays appressed, 1-3 cm. long. 

 Spikelets often 3-ilowored; first empty glume conduplieate, linear 

 when spread, 1-5 mm. long, second obovate, 2.3 mm. long; iloral 

 glume linear when spread. 2.8 mm. long; palea as long as its glume. 

 Florida, Curi'n^x 3403. 



Drv })ine-barrens; South Carolina to Florida. 

 2. E. hybrida Vasey, Coult. Bot. Gaz. 0:105 (1884) 

 Culms very sk'uder, 40-00 em. high. Lower sheaths softly 

 scabrous or very shortly woolly-pubescent; blades scabrous, invo- 

 lute, narrow, the two u[)per 1-3 cm. long. Panicle simple, very 



