Common yarrow
A perennial meadow plant with finely divided foliage and flat-topped flower clusters.
Matricaria chamomilla
Русское название: Ромашка аптечная
An aromatic daisy-family annual with white ray flowers. Widely sold as an herbal product, but allergic reactions are possible, particularly in people sensitive to the daisy family. Similar wild daisies are easy to confuse.

Do not use photographs or online summaries to identify wild plants for eating or medicinal use. Some poisonous plants resemble edible species and even handling certain species can cause harm. If poisoning is suspected, contact your local poison service or urgent medical care. Do not wait for symptoms.
Poison Control: poisonous plants (US) ↗Europe and western Asia; cultivated elsewhere
Fields, open disturbed ground and gardens
Images and brief descriptions are for learning, not for reliably identifying a specimen. Take particular care with poisonous plants and mushrooms.
Identification is never guaranteed by a photo. Scientific names are used to reduce confusion between local names.