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Bill Bouton   cc-by-sa-3.0

Colias alexandra (Alexandra's Sulphur) is a species of butterflies in the family Pieridae. They visit flowers of blanketflower, Fendler's ceanothus, Red Clover, and tall tumblemustard.

EOL has data for 8 attributes, including:

Known occurrences, collected specimens and observations of Alexandra's Sulphur. View this species on GBIF