AUUOSTIDK.E. 221 



partially incliuled, open, thin, lO-'^O cm. lon<if, rays very slender, 

 mostly in pairs, the lonj^est 10 em. lon^% tlower-hearing aloij; the 

 upper hair. Empty <>lumes purplish, aeuminate, :j-nerve(l, tlrst 8- 

 10 mm. long, seeond G-8 mm. long; iloret pubescent, hearing a 

 short awn, crown of hairs 5-0 mm. long, including the short sharp 

 callus, and the crown; })alea one-third as long as the glume, awu 

 slender, scabrid, bent once or twice near the middle, '^5 mm. long. 

 Stamens 3, anthers pencil-tufted. Some authors say " Stamen 1.*' 



(.California (Passadena), Jones 3544. 



Found in Arizona and C- ornia. 



Var. Anderson! Vasey, Contrib. V. S. Xat. Herb. 3: 54 ()8!)2). 



Culms more slender, blades narrower, panicle snuiller, much 

 exserted, 5-13 cm. long, longest rays 4 cm. long; empty glumes u-8 

 mm. long. The plants seen were from F. L. Scribner's herbarium, 

 collected in California by Anderson and pi-esented by Dr. Vasey. 



10. S. stricta Vasey, Bull. Torr. Club, 10:43 (1883). 



An erect slender grass, 20-40 cm. high. Sheaths longer than 

 the internodes, tlie upper one dilated; ligule very short; blade* 

 luirrowly involute, those of the sterile shoots extending nearly to 

 the panicle, those of the culm 3-4 in number. Panicle strict, nar- 

 row, partially included by the upjier sheath, 8-30 cm. long, lower 

 rays iu twos or threes. Empty glumes thin, mirrowly lanceolate, 

 acuminate, 3-uerved, subecpud, 10-13 cm. long; floret pubescent, 

 about 6 mm. long, including the callus and the very short 3- 

 toothed apex, awu twice bent, 30-40 mm. long, pubescent to the 

 second bend, 1-3 mm. long. 



Washington, Sukmlorf 385. 



AVashingtou to California and Nevada. 



Dr. Vasey observes that '* It has been mistaken for Stipa occi- 

 (lenlitUs, which has longer plumose awns. 5-nerved glumes, a con- 

 spicuous ligule, and a shorter looser panicle. It has shorter more 

 slender culms, narrower glumes, and shorter awns than S. viridula.'' 



17. S. viridula Trin. Bull. Sc. Acad. St. Petersb. 1 : 07 (1830). 

 S. imrvijloru Xutt. S. Bloomeri Boland. Proc. Calif. Acad. 4: 108 

 (1870). S. tijmrfca Hook. Fl. lior. Am. 2:337 (1840), not Trin. 



Culms stout, strict, simple, 40-70 or even 150 cm. high. 



