488 POACEiE. 



20-30 cm. long, rays single or in twos, diverging, bearing spikelets 

 nearly to the base, rigid, ciiiute in tlie axils. Sj)ikelet3 light-colored, 

 on pedicels 1-2 mm. long, ap})rossed or sjjreading, linear to ovate, 

 compressed, 6-12-ilowereil, 4-0 mm. long; empty glumes ovate- 

 lancoolato, 1-nerved, scabrid ou the keel; first about 1.5 mm. long, 

 second about 2 mm. long; floral glume ovate-lanceolate, thin, the 3 

 nerves moderately conspicuous, 1.7-2 mm. long; palea slightly in- 

 curved, linear when not spread, obtuse, slightly ciliate on the keels, 

 1.5 mm. long. Nearly allied to E. jiecfinacea. 



Texas, E. Hall 785, Revcrchon; Xew ^lexico, Wriglit 772. 



22. E. refracta {}U\\\\.) Seribn Mem. Torr. Club, 5: 49 (1805). 

 Poa vcfrarfa Muhl. T.ram. 14(3 (1817). E. mmpestris Trin. Hull. 

 Sci. Aead. St. Petersb. 1 : 70 (1830). E. jwviinacec yav. i-efrarta 

 Chapm. Fl. S. States, 504 (ISOO). 



Perennial; light lead-colored or jjurplish, culms branching only 

 at the very base, erect, firm, 40-00 cm. high. Throat of sheath 

 bearded; blades rigid, smooth, fiat, or involute, 20-30 cm. long, 

 about 2 mm. wide. Panicle open, thin, oval, 30-00 cm. long, rays 

 bearded at the base. Spikelets mostly sessile along the stiff 

 branches, linear, fiat, 8-30-fiowered, 7-12 mm. long; empty glumes 

 lanceolate, 1-nerved, 1.7-2 mm. long; fioral glume ovate, deltoid, 

 acute when spread, wnth 3 prominent nerves, 1.7-2.1 mm. long; 

 palea incurved, linear, ciliate on the keels, 1.3 mm. long. Grain 

 oval, very slightly compressed, 0.7 mm. long. 



Delaware and Maryland, Caiih;i; South Carolina, Eavenel; Flor- 

 ida, r?/r//ts\s 3500; Mississippi, Tracy. 



Dehiv^are, Florida. Mississippi and Texas. 



23. E. pectinacea (Michx.) Nees, Fl. Afr. Austr. 406 (1841). 

 Poa pecfinacea Michx. Fl. Bor. Am. 1:69 (1803). 



A tufted firm grass, culms simple, 30-00 cm. high. Sheaths 

 hairy, the throat prominently so; blades rigid, fiat or involute, 

 mostly smooth below, often hairy or scabrid above, 20-40 cm. long, 

 3-5 mm. wide. Panicle usually purple, widely diffuse, compound, 

 oval, 20-30 cm. long; rays in twos, threes or mostly single, rigid, 

 diverging, bearded in the axils, the cajnlhiry pedicels 0.5-3 mm. 

 long, appressed when young, but diverging with age. Spikelets 



