Ключевые слова: allergenic, allergic, allergy, avellana, background, bloom, blooming, blossom, botanical, botany, branch, bud, bush, catkin, catkins, closeup, common, common hazel, corylus, corylus avellana, deciduous, detail, early, early spring, flower, garden, green, growth, hanging, hazel, hazel catkins, inflorescence, macro, nature, outdoor, outdoors, plant, pollen, pollination, reproductive, season, seasonal, seasonal allergy, shrub, spring, springtime, tree, twig, winter, yellow,