GRAMINBA 481 



8. SETARIA, Beauv. 

 1. Setaria glauca, Beauv. 



Hab. On the Sacramento, California ; introduced. 



9. ERIOCOMA, Nutt. 



1. Eeiocoma cuspid ATA, Nutt. 



Eriocoma cuspidata, Nutt. Gen. 1, p. 40. 



Stipa membranacea, Pursh Fl. 2, p. 728. 



8. hymenoides, Roem. & Schult. Syst. 2, p. 339. 



Urachne lanata, Trin. Panic, p. 126. 



Fendleria rhynchelytroides, Steud. Syn. Plant. Glum. 1, p. 420. 



Hab. North branch of the Columbia. — This strikingly beautiful 

 species occurs eastward to the Missouri Kiver, and its seeds form an 

 important article of food to some of the Indian tribes of the interior. 

 The root, which seems to be rarely secured by collectors, is very white, 

 and its cortex, which separates readily from the woody portion in 

 drying, is clothed with a dense mat of long woolly hairs. 



10. ORYZOPSIS, Michx. 



1. Oryzopsis exigua, Sp. Nov. 



Panicula contracta, radiis solitariis binisve erectis subsecundis unifloris; 

 glumis obtusis mucronatis flosculo piloso paullo brevioribus ; ariMa 

 glumas subcequante ; antherarwn loculis apice barbatis. 



Hab. Cascade Mountains, Oregon. — Minutely pubescent throughout. 

 Culm slender and wiry, 6 to 8 inches high. Leaves 2 to 3 inches 

 long, narrow, convolute, rigid and pungent; sheaths shorter than 

 the internodes ; ligule somewhat exceeding a line in length and lacer- 



121 



