Of, relating to, or having the nature of a corolla; characterized by or possessing petal-like structures.
From corolla plus -aceous (having the nature of), following the standard pattern for creating adjectives from botanical nouns; describes structures with petal-like qualities.
The -aceous suffix appears in hundreds of botanical terms (herbaceous, foliacious), and corollaceous follows this elegant pattern—adding one suffix transforms a noun into an adjective that means 'petal-like' or 'having petals.'
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