102 PANICAOE^. 



rather loose, mostly shorter than the internodes ; ligule a ciliate 

 ring; blades flat, acuminate, 8-15 cm. long, 1-1.5 cm. wide. 

 Panicle simple, 6-10 cm. long, rays 4-8, spikelike, secund, spread- 

 ing in flower, erect in fruit, 2-3 cm. long, clothed with sliort hairs. 

 Spikelets in pairs, 1 subsessile, pubescent, lance-elliptical, acute, 

 5-G mm. long. Outer glumes soft-hairy excepting the obtuse 

 tip, equal, narrowly ovate, first 5-nerved, second 3-nerved ; floral 

 glume 2.5-3.5 mm. long, finely wrinkled, oblong or obovate-oblong, 

 apex subacute, with a tuft of short hairs. 

 Mexico, Palmer 110% Pringle 2317. 



2. E. sericea Munro, Vasey's Contrib. IT. S. Nat. Herb. 3 : 21 

 (1892). 



A slender tufted perennial, about 50 cm. high, clothed from 

 culm to sj)ikelet with very sliort pubescence. Sheaths reaching 

 above the nodes ; blades flat or involute, 12-20 cm. long, 3-5 mm. 

 wide. Panicle exserted or partially enclosed, simple, 7-12 cm. 

 long, bearing 4-6 simple, secund spikes about 2 cm. long and dis- 

 tant their own length from each other. Spikelets narrowly oval, 

 acute, 4-4.5 mm. long, borne on sliort pedicels, on which some of 

 the hairs often extend to the apex of the spikelet, first and second 

 glumes equal, 5-nerved; fertile floret oval, very briefly mucronate. 



Texas, Reverclion for U. S. Dept. Agricul. 37. 



Texas and ISTew Mexico. 



3. E. longifolia Vasey, Contrib. U. S. Nat. Herb. 3 : 21 (1892). 

 E. mollis longifolia Vasey, Bull. Torr. Club. 13:25 (1886). 



Culms smooth, slender, branching. 60-120 cm. high. Lower 

 sheaths nearly as long as the internodes ; blades smooth, ercept the 

 soft hairs at the nodes, 30-60 cm. long, 2-3 mm. wide. Panicle 

 exserted, slender, 12-20 cm. long, of 5-8 pedicellate alternate 

 spikes, the lower one 5 cm. long, the others gradually shorter; 

 general rachis and rays finely pubescent. Spikelets 10-12 to the 

 spike, third glume destitute of a flower, fertile floret short-awned. 



Florida, Curtiss. 



4. E. mollis Kunth. Rev. Gram. 1: 30 (1829). 



Perennial ; culms smooth below, 1-2 m. high. Leaf-blades flat, 

 30-50 cm. long, 1-1.5 cm. wide, throat fringed. The nodes. 



