Ключевые слова: a moment, allergenic, allergic coryza, allergy, aspen, atopy, bee, botany, bumblebee, catkin, catkins, closeup, common aspen, detail, eurasian aspen, european aspens, flora, flower, flower clusters, flowering, hay fever, nature, plans, pollen, pollination, populus tremula, quaking aspen, shrub, spring time, sunny, times, twig,