AGHOSTIDE.E. 345 



the base. Panicle spikelike, purple, 0-8 cm. long, 1 cm. broad, 

 more or less interrupted. Spikelets lanceolate, about 4.5 mm. long; 

 first glume a little the longer, second elliptical, acute, 3-nerved; 

 floral glume oblong when spread, 3 mm. long, toothed, the awn 

 rather stout, straight, 3-4 mm. long, starting 1 mm. from the base 

 of its glume; palea nearly as long as its glume, hairs of the callus 

 few, 1 mm. long, rudiment nearly 3 mm. long, including the hairs. 



Washington (Cascade Mou.. ains), Vaf<ey. 



Alaska to Wasliington. 



13. C. kcelerioides Vasey, Coult. Bot. Gaz. IG: 147 (1891). 

 Perennial; culms rather stout, smooth, 90 cm. high. Ligule 



3-4 mm. long; blades flat or involute, 10-13 cm. long, the u])})er 

 1-4 cm. long. 4-5 mm. wide, apex punctate. Panicle exserted, 

 spike-like, more or less interrupted. .5-7 cm. long, G-10 mm. broad. 

 S[)ikelets linear-huK-eoiate, scabi'id. 4-5 cm. long, empty glumes 

 subequal, the lower the .shorter, linear, acute, flrst 1-uerved, second 

 3-nervcd; floral glume 3.5-4.5 mm. long, scabrous, ovate when 

 spread, with a few hairs one-fourth its length; awn bent, stout, 

 starting one-third the way from the base of its glume, which it 

 equals or slightly exceeds; rudiment 1.3 mm. long, bearing a few 

 short stiflf hairs at the apex. 



California (San Diego), Orcntt for U. S. Nat. Kerb. 



\'ar. densa (Vasey). Cahimayrostis deiisn Vasey, Coult. Bot. 

 Gaz. 1G:147 (1891). 



A little taller, the upper blades G-8 cm. long, ligule a little 

 longer; panicle enclosed at the base when young, some ot the rays 

 3 cm. long. 



Found with the species. 



14. C. Pringlei (Scribn.). Dei/ei<.via Pringlei Scribn. ined. 

 Perennial; culms erect, stout, 40-70 cm. high. Sheaths mostly 



longer tiian the internodes; ligule 1-2 mm. long, decurrent; blades 

 about 5 to the culm, flat, few. leaves of sterile shoots slightly 

 scabrid, 15-30 cm. long, 3 mm. wide. Panicle exserted, silvery 

 green, tinged with purple, rather thin, G-13 cm. long, pyramidal 

 or narrow; rays capillary, G-8 in half- whorls, 3-3 cm. distant, the 

 longest 3-5 cm. long, erect, flower-bearing on the upper half. 



