50 Muhlenbergia, Volume 4 
The following synoptical key will perhaps prove of some 
assistance in a field study of the Californian species, and a care- 
ful study of the range of variation in the individual forms, whicu 
alone will accurately determine the status of many of the de- 
scribed species. 
KEY TO THE SPECIES IN CALIFORNIA 
Calyx inclosed or subtended by 2, large conspicuous 
bracts ( Cadystegia R. Br.) 
Stigmas ovate or oval to oblong, very flat; calyx in- 
closed by the persistent membranaceo-foliaceous 
broad bracts : 
Leaf blades reniform, obtuse, fleshy; plant maritime 1. Soldanellae 
Leaf blades ovate-hastate with rounded or angular 
basal lobes: glabrous 2. Sepincoli 
Stigmas linear or oblong-linear, flat; bracts closely 
subtending the calyx or distant from it 
Bracts closely investing the calyx, not simulating 
the leaves 
Stems distinctly twining or elongated and high 
climbing 3. Occidentales 
Stems trailing, prostrate, or short and ascending, 
rarely the tips twining; leaf blades deltoid- 
hastate 4. Subacaules 
Bracts distant from the calyx or simulating the leaves 
Bracts linear to narrowly oblong 5. Purpurati 
Bracts simulating the leaves 
Leat-blades triangular-lanceolate or broader, 
hastate or sagittate by the basal auricles 6. Fulcrati 
Leaf-blades deltoid or reniform; upper ones 
short petioled; lower ones with filiform 
petioles 7. Deltoidei 
Calyx without bracts or the bracts minute and iacon- 
spicuous; stigmas filiform or narrowly linear 
Leaf-blades attenuate at the base; corolla violet, 
deeply 5-cleft; stems short and spreading 8. Tricolores 
Leaf-blades hastate, cordate or sagittate at the base g. Arvenses 
I. SOLDANELLAE 
One species. Puget sound to southern California 1. C. Soldanella 
2. SEPINCOLI 
One species; introduced. Native of Europe 2. C. sepium 
