GRAMINEAE. 



VOL. I. 



3. Festuca sciurea Nutt. Southern Fescue- 

 grass. Fig. 650. 



Festuca sciurea Nutt. Trans. Am. Phil. Soc. 5 : 147. 1837. 



Culms 4'-2o' tall, slender; blades 2' long or less, 

 less than \" wide; panicle slender, i4'-6' long, its 

 branches erect or appressed; spikelets 3-5-flo\vered, 

 the first scale more than one-half as long as the 

 second, the flowering scales appressed-pubescent, 

 about i' long, exclusive of the awn which is 2-3 

 times as long as the scalt. 



In dry soil, Virginia to Florida, Oklahoma and Texas. 

 Squirrel Fescue. June-Aug. 



4. Festuca rubra L. Red Fescue-grass. Fig. 651. 



Festuca rubra L. Sp. PI. 74. i/53- 



Culms i*-22 tall, from running rootstocks, erect, 

 simple, smooth and glabrous. Sheaths usually shorter 

 than the internodes ; ligule very short, truncate; basal 

 blades involute-filiform, 3 '-6' long; culm blades shorter, 

 erect, flat or involute in drying, minutely pubescent 

 above; panicle 2 '-5' in length, sometimes red, open at 

 flowering time, contracted in fruit; spikelets 3-io-flow- 

 ered, 4" -6" long; lower scales acute, unequal, the first 

 I -nerved, shorter than the 3-nerved second; flowering 

 scales about 3" long, obscurely 5-nerved, sometimes 

 scabrous, bearing awns of less than their own length. 



Labrador to Alaska and Virginia, south, especially on the 

 mountains, to Tennessee and Colorado. Also in Europe 

 and Asia. Summer. 



V 



5. Festuca occidentalis Hook. Western 



Fescue-grass. 



Fig. 652. 



F. occidentalis Hook. Fl. Bor. Am. 2: 249. 1840. 



Culms densely tufted, i*-3 tall, erect, slender, 

 smooth and glabrous; blades filiform, soft, up to 

 4' long, the basal ones numerous ; panicle 3'-8' 

 long, loose ; spikelets 3~5-flowered, the empty scales 

 unequal, variable, the flowering scales membranous, 

 glabrous, 2*"-3" long, bearing an awn more than 

 half their length. 



In woods, Michigan to British Columbia and Cali- 

 fornia. May-July. 



