Alnus viridis

Mountain alder is a member of the birch or Betulaceae family and is native to northest North America and Greenland. It is a deciduous shrub or tree growing 1–5 m tall.

• Buds are pointed, without stalks; bark is scaly, sometimes lichen-covered, yellowish-brown or grey.
• Leaves are deciduous, simple, alternate, 4–10 cm long, smooth, finely toothed 1–2 times, oval with pointed tips.
• Flowers are male and female catkins which open at the same time as the leaves, on current year's growth; male catkin is unstalked.
• Fruit is a small nutlet, with broad wings; female cone is 1.5–2 cm long, egg-shaped.