Having the shape of a capitulum; head-shaped or referring to flower clusters arranged in a dense, rounded head.
From Latin 'capitulum' (small head) plus '-form' (having the form of). Botanical term describing structures that resemble small heads or chapters.
Dandelions, sunflowers, and zinnias all have capituliform flower clusters—thousands of tiny flowers so tightly packed they look like a single flower, which confuses many insects and plants trying to identify them!
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