Relating to or belonging to the Aristolochiaceae family of plants; having characteristics of this plant family.
From Aristolochiaceae plus the adjectival suffix -ous. This botanical adjective indicates membership in or relationship to this specific plant family.
When botanists describe a plant as aristolochiaceous, they're basically saying 'it's part of the weird pipe-flower family,' which is a way fancier way to describe those strange-looking plants!
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