Alnus firma

Basisdaten

Alnus firma leaf
Alnus firma leaf
  • Alnus firma leaf
  • Alnus firma leaf underside
  • Alnus firma blossom
  • Alnus firma budding
  • Alnus firma young cones
  • Alnus firma cones
  • Alnus firma trunk / bark
  • Alnus firma tree crown in winter
description: 

This tree is native to Japan and is also present only there. In other countries you will find the Alnus firma only in botanical gardens.

Tree profile

name botanical: 
Alnus firma
family: 
Birch familiy (Betulaceae)
species: 
deciduous tree
height: 
up to 30 m (99 ft)
leaf: 

The leaves are ovate, green, solid and serrated. Note the high-spines along leaf edge.

leaf shape: 
ovoid
leaf margin: 
serrated
leaf position: 
alternate
fall foliage: 
yellow
flowering: 
March- April
blossom color: 
yellowish
blossom description: 

The blossoms appears before sprouting of leaves. The male yellowish flowers (catkins) are conspicuous, the female flowers are inconspicuous.

gender distribution: 
monoecious dioecious
fruit: 

The cones are green and only become woody later, then the color is brown / black. The cones remain through the winter hanging on the tree.

bark: 
The bark is smooth and brown with lighter grain.
location: 
sun
usage: 

Park tree