Ledum-leaved Aetheolaena (Aetheolaena ledifolia)
This species is in fact known only by the material that was collected in 1802 by Alexander von Humboldt and Aimé Bonpland somewhere in Ecuador.
The species was never found again since and is now most likely extinct.
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edited: 29.04.2021
Dead as the Dodo – Holocene Extinctions
… about 5858 taxa have disappeared since the beginning of the Anthropocene era (since about 10000 BCE)
