AGROSTIDE.E. 347 



pedicels ; empty glumes nearly equal, elliptical-lanceolate, roughisli, 

 first 1-nerved, second 3-uerved; floral glume nearly smooth, oval- 

 lanceolate, 4-tootlied or lacerate, 5 mm, long, awn attached near 

 the middle and extending to the tip of its glume, hairs about ludf 

 the length of the glume, rudiment minute; palea nearly as long as 

 its glume, truncate or obtuse, ciliate at the apex. 



A very robust species forming dense tufts on the hillsides. Ac- 

 cording to Dr. Thurber, the lower leaves break off near the sheaths, 

 leaving these erect and rigid. The length of the 2 empty glumes 

 is quite variable. 



Alaska, U. S. Dept. Agricul. 424; TJnalascka, Harrington in 

 18T1-2, E. Hall 623; Oregon, Hoivell, E. Hall 623; California, 

 Bolander 4. 



Alaska to California. 



17. C. sylvatica var. Americana Vasey, Contrib. U. S. Nat. 

 Herb. 3:83 (1892). 



Perennial; culms erect, 20-60 cm. high. Sheaths rather loose, 

 as long as the internodes, or in tall plants, two-thirds as long; ligule 

 truncate, 1-2 mm. long; blades scabrid, often with many dead 

 sheaths below, those of sterile shoots reaching nearly to the panicle 

 or above it, those of the culm rigid, 7-18 cm. long, 3-4 mm. wide, 

 flat or involute, point attenuate. Panicle enclosed at the base or 

 exserted, strict, spikelike, dense, sometimes slightly interrupted be- 

 low, 8-15 cm. long, 1.5-2 cm. broad, the color pale, light to dark 

 purple; rays appressed, scabrid, 1-2 cm. long, in clusters of 4-8. 

 Spikelets very variable even in the same panicle or on different 

 panicles of the same plant, 5-7 mm. long, the twisted and bent awn 

 extending 1-3 mm. above tlie glumes; empty glumes ovate-lanceo- 

 late, mostly appearing very acute when the margins of the upper 

 portion are involute, scabrous on the keel, first 1-nerved, second 3- 

 uerved and a little shorter; floral glume scabrous, ovate, grooved 

 on the back, 4-toothed, 4.5-5 mm. long, awn attached near the 

 base, hairs mostly in two clusters at the sides, one-third the length 

 of the floret; palea a little shorter, the rudiment about 2 mm. long, 

 with hairs reaching to the tip of the palea. 



"The plant seems to be much more leafy at the coast than 



