MANUAL OF THE GRASSES OF THE UNITED STATES 



65 



FIGURE 68. Distribution of 

 Festuca grayi. 



FIGURE 69 Distribution of 

 Festuca arida. 



O Open ground, mountain slopes, and open woods, British 

 Columbia to Baja California, east to western Montana and New 

 Mexico (fig. 65). 



7. Festuca confusa Piper. (Fig. 66.) Resembling F. pacifica; sheaths 

 retrorsely pilose; foliage pubescent; spikelets usually 2- or 3-flowered; 



glumes hirsute with long 



spreading hairs; lemmas 



glabrous. O Dry 



hillsides, Washington to 



southern California. 

 8. Festuca grayi 



(Abrams) Piper. (Fig. 



67, A.) Resembling F. 



pacifica, often somewhat 

 stouter; sheaths and sometimes blades pubescent; glumes glabrous 

 to sparsely villous; lemmas pubescent, puberulent or sometimes 

 villous. o (F. microstachys var. grayi Abrams.) Open ground 

 and rocky slopes, Washington to 

 southern California and Arizona 

 (fig. 68). 



9. Festuca arida Elmer. (Fig. 

 67, B.) Culms erect or spread- 

 ing, mostly less than 15 cm tall; 

 sheaths and blades glabrous, the 

 blades loosely involute, mostly 

 less than 4 cm long; panicle 

 narrow, 2 to 5 cm long, the 

 branches appressed or the lower- 

 most somewhat spreading; 

 glumes about equal, glabrous, 5 

 to 6 mm long; lemmas densely 

 woolly, about 5 mm long ; awn 5 

 to 10 mm long. o Sandy 

 or dry ground, rare, eastern 

 Washington and Oregon, south- 

 western Idaho, northeastern Cal- 

 ifornia, and western Nevada (fig. 

 69). 



10. Festuca reflexa Buckl. 

 (Fig. 70, B.) Culms 20 to 40 

 cm tall; sheaths glabrous or 

 pubescent; blades narrow, flat to 

 subin volute, 2 to 10 cm long; 

 panicle 5 to 12 cm long, the 

 solitary branches and the spike- 

 lets all at length divaricate; 



spikelets mostly 1- to 3-flowered, 5 to 7 mm long; first glume 2 to 4 mm 

 long, the second 4 to 5 mm long; lemmas glabrous or scaberulous, 5 to 

 6 mm long; awn usually 5 to 8 mm long. o Mesas, rocky slopes, 

 and wooded hills, Washington to southern California, east to Arizona 

 and Utah (fig. 71). 



FIGURE 70. A, Festuca microstachys. Spikelet, X 5. 

 (Allen, Calif.) B, F. reflexa. Panicle, X V^\ spikelet, 

 X 5. (Brandegee 71, Calif.) 



