Assertion: chrysanthemum's flower | /r/CapableOf | lack flavonoid
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Source sentences:
text: Because these flowers lack flavonoid 3′,5′-hydroxylase (F3′5′H) activity, they do not synthesize delphinidin-based anthocyanins, which have an additional hydroxyl group at the 5′ position and are responsible for the bluish coloration in many plants (1).