Canadian Dogwood, Dwarf Dogwood, Bunchberry, Bunchberry Dogwood: Cornus canadensis (Synonyms: Chamaepericlymenum canadense, Cornella canadensis, Cornus canadensis var. dutillyi) - I'm currently unclear whether the bunchberry in the park is canadian dogwood or western cordilleran bunchberry (Cornus unalaschkensis) as collected specimens from the park state both species are synonyms of each other.
Lapland Cornel, Swedish Cornel: Cornus suecica (Synonyms: Chamaepericlymenum sueciucum, Cornella suecica, Swida suecica)