AGROSTIDE.E. 311 



7-0 mm. iliam. Spikelets narrowly elliptical, minutely scabrous; 

 empty glumes wliite, the tip of the floret yellowisli, about 3 mm. 

 long, first and second glumes subequal, very obscurely nerved, about 

 2 mm. long; floret awnless, minutely pubescent, with a small hairy 

 callus below. Anthers 2 mm. long. 



Mexico. Pr ingle 417, Palmer 21. 



California to Arizona and Mexico. 



This forms, in Mexico, tall bunches along streams, and in char- 

 acter and quality resembles Sporohohis Wvightii, whicli ranks as 

 fairly good. 



8. E. mutica Eupr. Bull. Acad. Brux. 9: part 2, 230 (1812). 

 A stout erect tufted grass, 90-150 cm. high, culms comisressed, 



without cavity, very hard. Sheaths longer than the internodes; 

 ligule a mere ring; blades hard, rough, conduplicate, the lower 

 9-15 cm. long, 5-6 mm. wide; tliose of tlie culm GO or more em. 

 long, the blade abruptly narrowed where it leaves the sheath, ajjex 

 long, attenuate. Panicle exserted, erect, 50-60 cm. long, 3-5 cm. 

 wide, compact with numerous erect branches, some of which are 15 

 cm. long. Spikelets short-awned or awnless, linear, acute, 2.2 mm. 

 long; empty glumes equal, nearly 2 mm. long, elliptical, soft, the 

 nerves very obscure; floral glume and palea equal, elliptical, acute, 

 a little longer than the empty glumes, containing a few very short 

 hairs. 



There are some spikelets apparently sterile and about 3 mm. 

 long, with a floret half as long, containing a very short awn. 



Mexico (Jalisco), Palmer 518. 



9. E. anomala Scribn. ined.; distributed as Melica (?) anomala 

 Scribn. u. sp. 



A tufted grass, 00-80 cm. high. Sheaths longer than the in- 

 ternodes; ligule firm below, white and very thin above, 3 mm. long; 

 blades 4-5, scabrous, flat, the tips involute-filiform, 20-30 cm. long, 

 4-6 mm. wide, the upper one filiform, 5 cm. long. Panicle erect, 

 exserted, lanceolate, interrupted below, 18-25 cm. long, rays erect, 

 in threes and fours, the longest 5-7 cm. long, flower-bearing for 

 most of its length, the upjier 1-2 cm. long, bearing small spikelets 

 in dense clusters. Spikelets purple, 1-flowered, with no rudiment of 



