(308 ) 
sessile.— 2(. with creeping rhizome, rigid, and 
with involute leaves. 
1. §S. stricta Roth.—Salt marshes. San 
Francisco. Summer. 
14, Cynodon Rich. Bexmupa Grass. 
Spikelets l-sided, sessile, 1-flowered, often 
with rudiment of a superior flower. Glumes 
2, carinate, awnless, the upper embracing the 
lower. Palets 2; the lower carinate, acute. 
Ovary sessile.—2f. Rhizome creeping. Leaves 
flattened. Spikes in our species digitate. 
1. C. pactyiton Pers.—San Jose. Summer. 
15. Danthonia DC. 
Spikelets 2-c -flowered; rachis hairy. Flow- 
ers distichous, the uppermost depauperate. 
Glumes 2, awnless, somewhat longer than the 
flower. Palets 2; upper 2-carinate; lower con- 
cave, o-nerved, 2-cleft, aristate. Ovary stipi- 
tate; caryopsis compressed, free.—2¢. Turfy. 
Leaves flattened. Spikelets pedicellate, pan- 
iculate. 
1. D. Catirornica Bolander.—Contra Costa 
hills. Summer. 
16. Avena L. Oar. 
Spikelets 3-flowered, the uppermost depau- 
perate. Glumes 2, awnless. Palets 2; lower 
2-cleft, aristate; upper 2-carinate, awnless. 
