Alnus subcordata, the Caucasian alder, is a species in the family Betulaceae, native to Hyrcanian forests of Iran and the Caucasus. It is closely related to the Italian alder (A. cordata) and Alnus orientalis.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 seeds.Two ...
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