(312) 
the carina ciliate. Ovary sessile ; hissute at 
the 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. secatinus 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.—@©. Mission. 
Spring. 
3. B. nacemosus 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.—© ©. Oakland. 
Spring. 
4. B.cmrarus L. Lower glume 1-nerved, 
upper 3-nerved; glumes acute; the upper more 
than half the length of the lower floret; lower 
palet silky.—2f. San Francisco. Summer. 
5. B. GRANDIFLORUS Hook (Ceratochloa 
Beauy.). Lower glume 5-nerved, the upper 
9-nerved; lower palet compressed, carinate.— 
2¢. 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 
