118 FLORAL CHARACTERS [CH. VII 
z  Palea distinctly bifid at the apex: awn 
nearly twice its length. A very small 
grass about six inches high: leaves sub- 
ulate, fine and short. 
A. caryophyllea, L. 
zx Palee almost imperceptibly bidentate: 
awn not much longer than palea. About 
12—18 inches high: leaves inrolled. 
A. flexuosa, L. 
Other species of Azra, with more condensed inflorescences, are 
dealt with on p. 112. Agrostis is distinguished by the leaves and 
one-flowered spikelets (see p. 104). Poa and Catabrosa have no 
awns. 
