(312) 



the carina ciliate. Ovary sessile ; hissute at 

 tlie apex. Leaves flattened; spikelets pedicel- 

 late, paniculate. 



1. B. MAXIMUS Desf. Lower glume 1-nerved, 

 upper 3-nerved; glumes hyaline, the upper al- 

 most equalling the floret ; lower palet scab- 

 rous. — . San Francisco. Mission. Spring. 



2. B. SECALixus L. Lower glume 3-5-nerved, 

 upper 5-7-nerved; lower palet, inside rounded, 

 convex, outside, carinate; rays of the panicle 

 spreading, even when in fruit. — 0. Mission. 

 Spring. 



3. B. RACEMOSUS L. Lower glume 3-5-nerved, 

 upper 5-7-nerved; lower palet, inside rounded, 

 convex, outside, carinate; rays of the panicle 

 contracted when in fruit. — 0. Oakland. 

 Spring. 



4. B. CILIATUS L. Lower glume 1-nerved, 

 upper 3-nerved; glumes acute; the upper more 

 than half the length of the lower floret; lower 

 palet silky. — U. San Francisco. Summer. 



5. B. CxRANDiFLORUS Hook (Cevatochloa 

 Beauv.). Lower glume 5-nerved, the upper 

 9-nerved; lower palet compressed, carinate. — 

 IC . Nicasio. Summer. 



33. Lepturus R. Br. 

 Spikelets 1-flowered, with rudiment of a su- 

 perior flower. Glumes 2, rigid, subulate in 

 the terminal spikelet opposite, in the lateral 



