MANUAL OF THE GRASSES OF THE UNITED STATES 



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2. Aira caryophyllea L. SILVER HAIRGRASS. (Fig. 581.) Culms 

 solitary or in small tufts, erect, 10 to 30 cm tall; panicle open, the 

 silvery shining spikelets 3 mm long, clustered toward the ends of the 



FIGURE 581 Aira caryophyllea. Plant, X 1 A; spikelet and floret, X 10. (Heller 3889, Wash.) 



spreading capillary branches; both lemmas with awns about 4 mm 

 long, o Open dry ground, Coastal Plain, Massachusetts to 

 Florida and Louisiana; Ohio; common on the Pacific coast from 

 British Columbia to California (fig. 582); southern South America, 



