Ключевые слова: april, bog, botanical, botany, branch, bush, calyculata, chamaedaphne, chamaedaphne calyculata, endangered, environment, europe, evergreen, family, flower, flowers, garden, hardy, heather, herb, herbal, inflorescence, leatherleaf, leaves, nature, outdoor, plant, poisonous, rare, shrub, shrubs, siberia, small, species, spring, swamp, wetland, white,