September 26, 1908 51 
3. OCCIDENTALES 
. Basal auricles of the leaves not divergent; bracts 
shorter than the calyx; corolla 3.5-4.5 cm. long 3. C. Binghamiae 
Basal auricles of the blades more or less divergent or 
spreading, often toothed or bifid 
Foliage glabrous or nearly so; leaf-blades cordate- 
hastate at the base 
Peduncles 5-15cm. long, usually 1-flowered 
Corolla 4.5-7 cm. long; leaf-blades triangular- 
lanceolate, basal auricles 1-3cm. long; bracts 
unequal, the lower ones strongly auricled and 
partly inclosing the other 4. C. limnophilus 
Corolla 2.5-3.5cm. long 
Bracts orbicular, rounded, mucronate, purp- 
lish, inclosing the calyx 5. C. cyclostegius 
Bracts ovate-lanceolate, acute to acuminate, 
closely subtending the calyx 6. C. occidentalis 
Bracts narrowly elliptic, somewhat distant from 
the calyx; sepals very unequal, the outer ones 
oval and truncate at the apex 7. C. polymorphus 
Peduncles 15-25 cm. long, 1-3-flowered; bracts 
2.5cm. long, leaf-blades deltoid-cordate 8. C. macrostegius 
Foliage tomentulose or cinereous-pubescent; leaf- 
blades triangular-lanceolate 
Bracts oval or ovate, obtuse or truncate at the apex, 
pubescent, mucronate, 1-1.5 cm. long; dis- 
tinctly petioled leaves with deeply toothed or 
bifid basal auricles g. C. Greenei 
Bracts ovate-lanceolate, acute, 1-2cm. long; 
peduncles 1-3 from each axis; foliage canescent; 
leaf-blades sagittate at the base and somewhat 
clasping, the lower ones subsessile 1o. C. aridus 
4. SUBACAUILES 
Foliage glabrate, minutely or densely cinerous- 
pubescent 
Minutely or densely pubescent or hispidulous; stems 
1o-30cm. long; peduncles shorter than the 
petiole 11. C. californicus 
Glabrous; bracts thin, oval, obtuse; leaf-blades 
broadly deltoid-ovate 12. C. atriplicifolius 
Foliage densely velvety-pubescent 
Bracts smaller or shorter than the calyx, oblong to 
ovate-oblong; stems longer than the petioles, 
20-30cm. long; peduncles very short; foliage 
cinerous with a villous-tomentose indument 13. 
0 
. tomentellus 
