Lapland rosebay (Rhododendron lapponicum) has showy upward facing flowers. It is a member of the Heath Family
(Ericaceae). The rosebay has larger blossoms than the alpine azalea and the difference between the two is in the number of stamen - 10 for the rhodadendron and 5 for the azalea.
This flower was an amazing Greenland tundra find.