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3. ©. muricata L. Inflorescence the com- 
pound of many sessile spikes; 6 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, (©. GLoMERATA Thunb. Inflorescence the 
compound of many sessile spikes; ¢ or an- 
drogynous spikes at the top; inflorescence elon- 
gated ,the compound of -small rounded spikes; 
stigmas 2; bracts setaceous, longer than the 
spikes; spikes brown. —Common. Summer. 
5. C. panicutaTa L. Inflorescence the com- 
pound of many sessile spikes; 4 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. OC. FESTIvA Dewey. Inflorescence the 
compound of many sessile spikes, forming a 
capitulum; 4 spikes at the bottom or centre; 
spikes brown.—Oakland. Summer. 
7. ©. Dewryvana Schwein. Spikes of the 
inflorescence distinct, androgynous; ¢ florets 
at the base; stigmas 2; spikes pale. ss 
Valley. Summer. 
8. C. Birtpa Boott. Spikes of ne 
distinct, the uppermost androgynous with 
florets on the base, the rest of the spikes? , 
