What does capitula mean?
Capitula is the plural form of capitulum, a term used primarily in botany to describe the distinctive flower heads of the daisy family. What appears to be a single daisy or sunflower bloom is in fact a capitulum: dozens to hundreds of tiny, stalkless florets densely crowded onto a flattened or domed receptacle, often ringed by ray florets that mimic petals. This compact structure is one of the defining features of Asteraceae, one of the largest plant families on Earth. In anatomy and zoology, capitula also refers to small, rounded, head-like parts — such as the capitulum of the humerus or radius, which articulates with another bone. The word comes from Latin caput, meaning "head," making it a diminutive cousin of words like capital and captain. Formal and technical in register, capitula appears almost exclusively in scientific writing, field guides, and textbooks, offering writers a precise alternative to vague phrases like "flower head."
In botany, the plural of capitulum: dense, compact flower heads made up of many sessile florets on a common receptacle, characteristic of the daisy family (Asteraceae).
"The chamomile's capitula were gathered at dawn while their oils were most concentrated."
Used almost exclusively in botanical and horticultural contexts; the singular is capitulum.
In anatomy and zoology, the plural of capitulum: small rounded, head-like structures, especially the articular head of a bone such as the humerus or radius.
"The ligament attaches firmly to the capitula of the adjacent ribs."
Found mainly in anatomical and veterinary literature; the singular is capitulum.
Capitula is itself the standard Latin plural of capitulum and should be used with plural verbs; do not add -s.
"Several capitula opened simultaneously after the rains."
A sunflower isn't one flower at all — its entire face is a single capitulum, a city of hundreds of tiny flowers arranged in spirals that follow Fibonacci numbers.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of capitula
Capitula is the plural of capitulum, a New Latin term formed from the classical Latin word caput, meaning "head," via the diminutive suffix -ulum, yielding "a little head." The same root gives English a wide family of cognates, including capital, captain, decapitate, and the phrase per capita, all carrying the core sense of "head." Botanical use of capitulum for the composite flower heads of the daisy family became established in scientific Latin and entered English botanical terminology around the seventeenth century, alongside the rise of formal plant taxonomy.
Related word forms
How capitula is actually used
"Capitula" is strictly the plural of "capitulum" and belongs to formal scientific register — chiefly botanical literature, where it is the standard term for composite flower heads, and to anatomical texts. In everyday speech it is rare; lay readers are far more likely to encounter "flower head." Latin plurals like this remain preferred over anglicized forms in scientific usage.
Easily confused with capitula
Capitulate is a verb meaning to surrender or yield, while capitula is a plural noun referring to flower heads or small rounded anatomical structures.