Ключевые слова: allergen, allergic, allergy, ambrosia, annual, artemisiifolia, asthma, autumn, background, bloom, blooming, botany, branch, branched, bush, closeup, detail, flower, foliage, fresh, green, herb, isolated, leaf, medicine, natural, nature, plant, pollen, ragweed, seasonal, stem, summer, weed, white, yellow, young,