Alnus spp.
- Height: up to 25 m
- Trunk: Black-brown bark, longitudinally fissured, often multi-stemmed
- Leaves: obovate to roundish, recessed tip
- Buds: sticky buds
- Fruits/seeds: small (approx. 1.5 cm) woody fruit cones (as the only deciduous tree)
- Other: sheds green leaves in autumn, has root nodules
Photos: Janina Deutschmann (1,2,3)