Plural of bignonia; multiple plants of the genus Bignonia or the Bignoniaceae family.
Simple plural formation from 'bignonia' (the genus name) by adding the standard English plural suffix '-s'.
Bignonia species have conquered gardens on every inhabited continent despite originating in the tropics—their ability to thrive in diverse climates and their stunning flowers make them one of the most successful ornamental plant exports from the Americas.
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