(318 ) 
stigmas 3; spikes dark-colored.—Marin county. 
Summer. 
9. ©. nupatTa Bolander. Spikes unisexual, 
the upper 6, the rest 2 (sometimes androgy- 
nous) stigmas 2; 6 spike single (sometimes an- 
drogynous); utricle (perigynium) elliptic, com- 
pressed, slenderly nerved.—Tamalpais. Sum- 
mer. 
10. C. aguavinis Wahl. Spikes unisexual; 
the upper 1-4 spikes 6, the lower (2-5)? ; 
stigmas 2; utricle (perigynium) elliptic, stipi- 
tate, nerveless.—Wright’s Station. Summer. 
11. ©. Srrosensis Prescott. Spikes unisex- 
ual; the upper 1-4 spikesé, the rest (3-5) ? ; 
stigmas 2, utricle (perigynium) orbicular, tur- 
gid, stipitate, coriaceous, nerveless.—Pyresidio. 
Summer. 
12. C. Jamusi Torr. Spikes unisexual; 
upper 1-4 spikes 4 , the rest (3-4) 2 ; stigmas 2, 
utricle (perigynium) oval, strongly nerved, ab- 
ruptly ending in a 2-dentate beak; bracts about 
the length of the stem.—Sonoma. Summer. 
13. C. waciniata Boott. Spikes unisexual; 
upper 1-2; spikes é, the rest (3-4) 2 ; stigmas 
2, utricle (perigynium) oval, lenticular com- 
pressed, bracts far exceeding the stem.—Coast 
Range. Summer. 
14. ©. gazososa Boott. Spikes unisexual, 
upper spike 4, rest (8-5)? ; stigmas 3; utricle 
