1. Plant bearing numerous vegetative bulblets in the axils of broad-based, abruptly acuminate bracts, especially on upper portion of the plant; umbels very few or none; central part of leaflets (excluding teeth or lobes) less than 3 (-5) mm wide; styles becoming ca. 0.5-0.7 mm long; fruit ca. 1.5-2 mm long.

C. bulbifera

1. Plant without bulblets or acuminate bracts; umbels well developed; central part of leaflets (excluding teeth) mostly 5-25 mm wide; styles becoming ca. 1-2 mm long; fruit ca. 3-5 mm long.

C. maculata