It is a deciduous tree growing to 15–25 m tall, with similar glossy green cordate leaves 5–15 cm long. The flowers are catkins, the male catkins very slender, 8–15 cm long, the female catkins small, maturing into a woody cone-like fruit 2–3 cm long containing numerous small winged seedsThe tree is up to 30-35 m tall. It grows rapidly and at the age of forty it reaches 20-28 m in height and 50-52 cm in diameter, and at 50 years - 32 m and 90 cm, respectively. Lives up to 100-120 years. In old age, it is affected by rot . Branches are olive or reddish brown, with thin, light lenticels; young - pubescentThe buds are pubescent, ovate, obtuse. Leaves are slightly sticky, from rounded to oblong-ovate, with a cordate or rounded base, 7-16 cm long, 4.5-11 cm wide, sharp or pointed, occasionally rounded at the apex, along the edge with almost equal teeth, finely serrate, above glabrous, dark green, on petioles 1-3 cm long
Heart-shaped alder, or heart-leaved alder armor. Alnus cordata - a species of flowering plants of the Alder genus Alnus of the Birch family Betulaceae Introduced
common species are black alder, gray alder, fluffy alder. Furlow J. J. has reduced the number of alder species native to North America
spindle Also in the floodplain areas of the S. Dvina River there grows heart-leaved black alder, Siberian iris, which are rare and need protectionIn nature, the range of the species covers the Transcaucasus: Azerbaijan and Iran. Forms plantations mixed with lapina or many woody species along the banks of rivers and streams on rich alluvial soils with flowing waters in the lower and middle mountain belt. Photophilous plant, mesotherm and hygrophyte. Edificator of forests along river valleys.