Small Sandwort (Arenaria nana)
The Small Sandwort is known exclusively from the type material collected apparently in 1816 (?) by A. J. A. Bonpland and A. v. Humboldt, it was never collected since and is considered extinct.
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The photo below shows another congeneric that is also occurring in Ecuador, the Cushion Sandwort (Arenaria dicranoides Kunth)
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Photo: Zane Libke
https://www.inaturalist.org/people/zanelibke
https://creativecommons.org/licenses/by-nc/4.0/
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edited: 14.04.2019