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Hawthorn (Crataegus), fam. Rosaceae.
A low tree, met both in the city and in the forest, but never forms accumulations. Flowers in May, bears fruit in September. The fruits are medicinal, but collecting them is usually not very productive in our places.
The flowers, fruits, and leaves are pharmaceutical staples. The hawthorn fruits contain sugars, organic (malic, citric, tartaric, ascorbic, etc.) and triterpenic (oleanolic, ursolic, and crataegic) acids, tannins, phytosterols, saponins, glycosides and carotene. Hawthorn decreases excitability of the central nervous system, tones the heart muscle, decreases the arterial pressure, removes the tachycardia and arrhythmia.