MANUAL OF THE GRASSES OF THE UNITED STATES 



sibly native northward but introduced ^v a : 



in the United States; Europe. Some- 

 times cultivated for putting greens. 



353 



Figure 492. — Agrostis oregonensis. Panicle, X 1 : 

 glumes and floret, X 5. (Hitchcock 23524, Oreg.) 



Figure 493. — Agrostis canina. Panicle, X 1 ; glumes 

 and floret, X 5. (Commons 99, Del.) 



36. Agrostis borealis Hartm. (Fig. 

 494.) Culms tufted, 20 to 40 cm. 

 tall, or, in alpine or high northern 

 plants, dwarf; leaves mostly basal, 

 the blades 5 to 10 cm. long, 1 to 3 

 mm. wide; panicle pyramidal, 5 to 

 15 cm. long, the lower branches 

 whorled and spreading; glumes 2.5 

 to 3 mm. long, acute; lemma a little 

 shorter than the glumes, awned, the 

 awn usually bent and exserted; palea 

 obsolete or nearly so. % (A. bakeri 

 Rydb., lemma with a straight awn 

 or awnless.) — Rocky slopes and moist 

 banks at high latitudes and altitudes, 



Figure 494. — Agrostis borealis. Panicle, X 1 ; glumes 

 and floret, X 5. (Faxon 99, N. H.) 



Newfoundland and Greenland to 

 Alaska, south to the high mountains 

 of New England and New York ; West 

 Virginia; summit of Roan Mountain, 

 N. C; Alberta and Washington to 

 Wyoming, Colorado, and Utah; 

 northern Europe. 



Figure 495. — Agrostis longiligula. Panicle, X 1; 

 glumes and floret, X 5. (Type.) 



37. Agrostis longiligula Hitchc. 

 (Fig. 495.) Culms erect, about 60 

 cm. tall; ligule 5 to 6 mm. long; 

 blades 10 to 15 cm. long, 3 to 4 mm. 

 wide, scabrous; panicle narrow, but 



