298 



MISC. PUBLICATION 200, U. S. DEPT. OF AGRICULTURE 



Figure 404. — Aira caryophyllea. Plant, X X A\ spikelet and floret, X 10. (Heller 3889, Wash.) 



ing, 3.5 to 4 mm. long; lemmas with 

 awns 2 to 4 mm. long, that of the 

 lower floret the shorter. O — 

 Sandy open ground, along the coast, 

 New Jersey to Virginia; Vancouver to 

 California. 



2. Aira caryophyllea L. Silver 

 hairgrass. (Fig. 404.) 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 spreading capillary 

 branches; both lemmas with awns 

 about 4 mm. long. O — Open dry 

 ground, Coastal Plain, Massachusetts 

 to Florida and Louisiana; Ohio; com- 



