Badan thick-leaved (Latin Bergenia crassifolia) belongs to the genus Badan (Latin Bergenia), a rather polymorphic family of Saxifragidae (Latin Crassulaceae), which is widespread in temperate and cold climates of the Northern Hemisphere, as well as mountain ecosystems of the tropics and the Andes of South America . Along with its scientific name it has other popular names - thick-leaved bergenia, hardstone saxifrage, Mongolian tea, SiberianTea. It's leathery, rounded, large evergreen leaves gave the name - “Elephant Ears”.
Badan is perennial herbaceous evergreen plant which grow up to 10-50 cm tall or more. It has a thick fleshy creeping, highly branched rhizome, with numerous root lobes. The stem is leafless, naked. The leaves are long-leaved, large, glabrous, whole, slightly fleshy, dark green blushing by autumn, collected in a thick basal rosette, usually live 2-3 years. A leaf blade (3–35 cm long, 2–30 cm wide), broadly elliptical or slightly obovate in shape, with a rounded or heart-shaped base and large blunt teeth along the edge. Although it is considered an evergreen plant, its leaf lives only one year. Typically, the leaf appears in the spring after flowering, grows in the summer, hibernates while maintaining a green color, supplies the plant with nutrients in the spring, and then dies, giving way to young (new) leaves. As new leaves appear, last year's ones turn red, turn brown, sometimes turn black and dry. The flowers are small (up to 0.8 cm in diameter), regular (actinomorphic), 5-membered, with a lilac-pink bell-shaped rim, collected in a dense apical (terminal) panicle-corymbose inflorescence. Usually inflorescences on leafless peduncles. Petals at the base are ovoid or round-ovate with a short wide nail, 2-3 times longer than the calyx. Perianth double. A characteristic feature of the flower of badan is the presence of hypanthium, which grows to the base of the gynoecium. The fruit is an ellipsoidal dry capsule with two diverging blades. Blossoms in May-June until the appearance of young leaves. Seeds are numerous, small, ripen in July - early August.
Badan is considered a Siberian plant, it is widely distributed in Eastern Siberia, Altai, Western and Eastern Sayans, as well as Transbaikalia and southwestern Yakutia, where it grows from 400 to 2500 m above sea level. Typical places for the growth of thick-leaved frangipani are well-drained rocky screes and fissures of the rocks of the subalpine, alpine and upper parts of the forest belt (dark coniferous), the so-called "badan forest types." It is found in the gravelly tundra, on the banks of rivers and streams. It forms significant thickets over the area.
Badan is harvested throughout the summer (until the end of the growing season). Rhizomes are cleaned of the earth and small roots, cut into pieces (10-15 cm long) and dried for about three weeks at a temperature of 45 ° C to an air-dry state. Before drying, the rhizomes are wilted. Dried rhizomes are used as a medicinal raw material for the manufacture of a liquid extract. In the spring, dry leaves overwintered for at least one year are also harvested. Shelf life of raw materials is up to 5 years.
Up to 23% of tanides are contained in the leaves of Badan, and up to 27% in its rhizomes. In addition, 25–27% of tannins, phenolic compounds, phenol carboxylic acids, the coumarin derivative - Berezhnin, as well as isocoumarins, catechins, starch, sugars, and mineral salts were found in the rhizomes. Gallic acid, coumarins, flavonoids, vitamin C, carotene and arbutin, as well as 2-4% free hydroquinone, were found in the leaves.
Individual intolerance to the components of dietary supplements and herbs.
Add two tablespoons of crushed leaves to one liter of boiling water, insist 20-30 minutes, strain. Drink like regular tea.