Alnus maximowiczii

Montane alder is a member of the birch or Betulaceae family and is native to Japan, Korea and the Russian Far East (Sakhalin, Primorye, Khabarovsk, Kuril Islands). It is typically a shrub but can grow up to 9 m tall.

• Leaves are alternate, simple, broadly ovate, rounded or heart-shaped at the base, 5–10 cm long and 3.7–7.5 cm across, margin with very fine, slender teeth, hairy when young but glabrous later, except for tufts of down underneath, 8–11 pairs of veins, bright green on both sides, stock is 1.2–3 cm long; fall colour is not appreciable.
• Male flowers form clusters of long, pendant catkins up to 5 cm long; females are short, erect reddish catkins, maturing into egg-shaped woody (non-fragmenting) seed cones up to 2 cm long, containing winged seeds.