(317) 



3. C. MUBICATA L. Inflorescence the com- 

 pound of many sessile spikes; $ spikes or 

 androgynous spikes at the top; inflorescence 

 oblong, the compound of 4-10 spherical 

 spikes; stigmas 2; bracts ovate, aristate, longer 

 than the spikes; spikes chestnut-color. Marin 

 County. Summer. 



4. C. GLOMERATA Thunb. Inflorescence the 

 compound of many sessile spikes; 6 or an- 

 drogynous spikes at the top; inflorescence elon- 

 gated, the compound of co-small rounded spikes; 

 stigmas 2; bracts setaceous, longer than the 

 spikes; spikes brown. Common. Summer. 



5. C. PANICULATA L. Inflorescence the com- 

 pound of many sessile spikes; <3 or androgy- 

 nous spikes on the top; inflorescence almost 

 linear, the compound of oblong spikes (some* 

 times branched); stigmas 2; bracts setaceous; 

 spikes brown or pale. Presidio. Summer. 



6. C. F E s T i v A Dewey. Inflorescence the 

 compound of many sessile spikes, forming a 

 capitulum; 6 spikes at the bottom or centre; 

 spikes brown. Oakland. Summer. 



7. C. DEWEYANA Schwein. Spikes of the 

 inflorescence distinct, androgynous; 6 florets 

 at the base; stigmas 2; spikes pale. Napa 

 Valley. Summer. 



8. C. BIFIDA Boott. Spikes of inflorescence 

 distinct, the uppermost androgynous with <3 

 florets on the base, the rest of the spikes ? , 



