What does corollaceous mean?
Corollaceous is a technical adjective used chiefly in botany to describe something that belongs to, resembles, or has taken on the character of a corolla — the collective name for a flower's petals. It appears most often in descriptions of plants whose non-petal parts mimic petal structure: for example, sepals that have become large, coloured, and petal-like are said to be corollaceous, as in many lilies and hellebores. The word derives from the Latin corolla, meaning a small crown or garland, itself a diminutive of corona. Because it is specialised terminology, corollaceous carries a formal, scientific register and is unlikely to appear outside field guides, floras, and academic texts. For gardeners and botanists alike, it offers precision: rather than saying a sepal is 'petal-like', the term captures exactly that transformation in a single word.
adjectiveOf, relating to, or belonging to the corolla of a flower; resembling or having the form of a corolla.
- Belonging to or characteristic of the corolla of a flower.
- Resembling a corolla in shape or appearance.
"The corollaceous petals of the orchid formed a striking, trumpet-shaped bloom."
"In many lilies, the sepals are corollaceous and indistinguishable in colour from the true petals."
"The bracts had become corollaceous, taking on the bright hues normally reserved for petals."
Botanists needed one word for 'petal-like', and they reached all the way back to the Latin word for a small garland — corona — to build it.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of corollaceous
Corollaceous comes from the Latin corolla, meaning 'small crown' or 'garland', a diminutive of corona ('crown'), combined with the adjective-forming suffix -aceous. The term entered English as part of the scientific botanical vocabulary that developed largely from the late eighteenth century onward, when Latin-based descriptive terms were systematised for plant anatomy. Its cognates include corollate and corolliform, which share the same Latin root and serve closely related descriptive purposes in botany.
Related word forms
How corollaceous is actually used
A technical term confined almost entirely to botany and botanical writing; it is rarely encountered in general prose. In flowers where sepals take on petal colouring, they are often described as corollaceous.
Easily confused with corollaceous
Corallaceous means coral-like (from Latin corallum), whereas corollaceous relates to the corolla, the petals of a flower.