Having a small head or head-like enlargement; in botany, having flowers arranged in a small compact cluster.
From Latin capitellatus (having a small head), from capitellum (little head), from caput (head) + -ellus (diminutive) + -ate (adjective).
Many wildflowers and weeds are 'capitellate'—their flowers cluster into tiny heads like miniature pompoms. It's why you see so many wildflowers with that compact, rounded flower shape!
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