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Term Definition
Capitulum (plural = capitula) A dense inflorescence of sessile flowers on a dilated receptacle or in a (sub) globose or head-like form; for example, the inflorescences of Asteraceae, some Cyperaceae, Laminaceae, and Rubiaceae. A medial section of a capitulum (head) of a species of Asteraceae. Drawing by B. Angell.