(repost from the thread of your Mt Jefferson trip report, saw that thread first)
Looks like probably two species here, Vaccinium uliginosum (bog bilberry) and perhaps V. angustifolium (the one with the flowers). You can V. uliginosum tell by the round leaves w/ smooth edges and blunt point; it normally has a 4-petaled corolla which is unusual for the heath family. V. angustifolium has the usual blueberry type leaf (longer than wide, point at the tip), and small serrations on the leaf edges. Around 5000' in places where snow collects in crevices, plants are often delayed a few weeks from lower elevations & it's about right for the various Vaccinium sp. of the area (V. uliginosum, V. caespitosum, V. boreale, V. angustifolium)
