Joinvillea is a flowering plants genus in the family Joinvilleaceae.
The family consists of one genus with species distributed from the Malay Peninsula to the Caroline Islands and high islands in the Pacific Ocean. It is evolutionarily significant as a relictual group that is a close relative of grasses. They closely resemble large grass plants, in both general appearance and microanatomy, but possess fleshy fruits.
Joinvillea elegans is a flowering plant species in the genus Joinvillea found in New Caledonia.
Correbidia joinvillea is a moth of the Arctiidae family.
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