Relating to or belonging to the Cyclanthaceae plant family, characterized by distinctive spiral flower arrangements.
From Cyclanthaceae plus the suffix '-ous' (meaning having the qualities of). Standard botanical Latin adjective formation. Used by botanists to describe plants sharing characteristics of this family.
When botanists add '-aceous' or '-ous' to a plant family name, they're creating an adjective that means 'like a member of this family'—it's a quick way to say 'this plant has the key features of Cyclanthaceae!'
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