Blueberry
There are a number of species of blueberry around Sitka including Alaskan blueberry (Vaccinium alaskaense), oval-leafed blueberry (V. ovalifolium), dwarf blueberry (V. caespitosum), and bog blueberry (V. uliginosum). It is difficult for me to distinguish between them.
Picture taken along top of Gavan Ridge 4 June 1998