AGROSTIDE.E. 345 



the base. Panicle spikelike, purple, 6-8 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 2 mm. long, including the hairs. 



Washington (Cascade Mountains), Vasey. 



Alaska to Washington. 



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

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



3-4 mm. long; blades flat or involute, 10-12 cm. long, the upper 

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

 spike-like, more or less interrupted, 5-7 cm. long, 6-10 mm. broad. 

 Spikelets linear-lanceolate, scabrid, 4-5 cm. long, empty glumes 

 subequal, the lower the shorter, linear, acute, first 1-nerved, second 

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

 sjoread, 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 stiff hairs at the apex. 



California (San Diego), Orcutt for U. S. Nat. Herb. 



Yar. densa (Vasey). Calamagrostis densa Vasey, Coult. Bot. 

 Gaz. 16:147 (1891). 



A little taller, the upper blades 6-8 cm. long, ligule a little 

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

 3 cm. long. 



Found with the species. 



14. C. Pringlei (Scribn.). Deyetixia Pi^inglei Scribn. ined. 

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



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

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

 scabrid, 15-20 cm. long, 3 mm. wide. Panicle exserted, silvery 

 green, tinged with purple, rather thin, 6-12 cm. long, pyramidal 

 or narrow; rays capillary, 6-8 in half- whorls, 2-3 cm. distant, the 

 longest 2-5 cm. long, erect, flower-bearing on the upper half. 



