Beringian Spring Beauty, Tuberous Springbeauty, Tuberous Spring-beauty
Claytonia tuberosa
Synonym: Claytonia caroliniana var. tuberosa

Tuberous springbeauty as seen in tundra about one-half mile southwest of the summit of Mount Galen, Denali National Park and Preserve............June 21, 2012. Note the linear to narrowly lanceolate stem leaves.
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Tuberous springbeauty as seen in tundra about one-half mile southwest of the summit of Mount Galen, Denali National Park and Preserve............June 21, 2012. Note the white petals (lacking pink venation) with bright yellow bases.
Paul Slichter