Could someone help me identify this shrub? It can be found to be up to 3m tall, often smaller (50-150cm), with spare branches and beautiful but understated white flowers, found in dark and wet undergrowth near rivers/lakes in BC coast. #pnw #identifyplant #plantidentification #nature #britishcolumbia (for reference, the leaves are no more than 5-10cm long, the flowers < 2cm.