MANUAL OF THE GRASSES OF THE UNITED STATES 



63 



Figure 63.— Distribution 

 Festuca myuros. 



of 



ground, British Columbia to Baja California, common in the Coast 

 Ranges of California, east to Idaho and Arizona and r a few localities 

 eastward; Pacific slope of South America (fig. 61). In mature lem- 

 mas the cilia may be obscured by the inrolling of the edges; moistening 

 the floret will bring the cilia to view. 

 4. Festuca dertonensis (All.) Aschers. and Graebn. (Fig. 62, B.) 



Resembling F. 



megalura, the pani- 

 cles. on the average 



shorter, usually 



less dense; glumes 



longer, the first 



about 4 mm long, 



the second 6 to 7 



mm long; lemma 



lanceolate, scabrous 



on the back toward 



the apex, 7 to 8 mm 



long; awn 10 to 13 



mm long. o — 



Dry hills and mead- 

 ows, British Co- 

 lumbia to southern 



California; rare as 



a waif in the East- 

 ern States ; intro- 

 duced from Europe. 



This species has 



been referred to F. 



bromoides L. by 



American authors. 

 5. Festuca myfi- 



rosL. (Fig. 62, .4.) 



Differing from F. 



megalura chiefly in 



the absence of cilia 



on the lemma ; pan- 

 icle usually smaller, 



first glume 1 to 1.5 



mm, the second 4 



to 4.5 mm, long. 



O — Open ground, 



Coastal Plain, 



Massachusetts t o 

 Texas ; Ohio ; Pacific coast, Washington to southern California (fig. 63) ; 

 introduced from Europe. 



6. Festuca pacifica Piper. (Fig. 64.) Culms erect or geniculate 

 at base, 30 to 60 cm tall; blades soft, loosely involute, glabrous, 3 to 5 

 cm long; panicle 5 to 12 cm long, the lower branches solitary, some- 

 what distant, subsecund, spreading, 1 to 3 cm long; spikelets 3- to 

 6-flowered; first glume subulate-lanceolate, about 4 mm long, the 

 second lanceolate-acuminate, about 5 mm long; lemmas lanceolate, 

 glabrous or scaberulous, 6 to 7 mm long; awn 10 to 15 mm long. 



Figure 64.— Festuca pacifica. 

 Panicle, X Vi\ floret, X 5. 

 (Type.) 



Figure 65.— Distribution 

 Festuca pacifica. 



of 



Figure 66 



Festuca confusa. Plant, 

 X 1; spikelet, X 5. (Type.) 



55974°— 35- 



