Aureusidin synthase is an enzyme found in "Antirrhinum majus" (Garden snapdragon). "Antirrhinum majus" suffers mostly from fungal infections. "Antirrhinum majus" may suffer from some pests and diseases. The larvae feed on "Antirrhinum" species (including "Antirrhinum majus"), as well as "Pelargonium" x "hortorum". Antirrhinum majus also shows intermediate inheritance of the pigmentation of the blossoms. "Antirrhinum majus" has also been used to examine the relationship between pollinators and plants. The model is based upon studies of mutants in "Arabidopsis thaliana" and snapdragon, "Antirrhinum majus".