Androsace americana

Androsace americana, synonym Douglasia arctica, known as the Mackenzie River dwarf primrose, is a species of flowering plant in the primrose family, Primulaceae. It is native to subarctic North America (Alaska, the Northwest Territories and Yukon).
Taxonomy.
The species was first described by William Jackson Hooker in 1838 as "Douglasia arctica". Molecular phylogenetic studies showed that the genus "Douglasia" is nested within "Androsace". The name "Androsace artica" was published in 1826 for a different species (now regarded as a synonym of "Androsace ochotensis"), so the replacement name "Androsace americana", published by Per Wendelbo in 1961, is used instead.