Ironbark
Ironbark is a common name of a number of species within the genus Eucalyptus that have dark, deeply furrowed bark.
Many eucalypts shed their bark very year, but on an Ironbark the dead bark stays on the trees, forming the furrows. It becomes rough after drying out and becomes full of kino, a dark red tree sap exuded by the tree. The bark is resistant to fire and heat and protects the living tissue within the trunk and branches from fire. In cases of extreme fire, where leaves and shoots are removed, the bark protects the epicormic buds which allow the tree to reshoot.
Examples of Ironbark species
Eucalyptus crebra, narrow-leaved ironbark or narrow-leaved red ironbark
Eucalyptus fibrosa, broad-leaved red ironbark
Eucalyptus melanophloia, silver-leaved ironbark
Eucalyptus paniculata, grey ironbark
Eucalyptus siderophloia, Northern Grey Ironbark
Eucalyptus sideroxylon, red ironbark or Mugga
Eucalyptus placita, Grey Ironbark
Eucalyptus staigeriana, lemon ironbark
Eucalyptus tricarpa, red ironbark.
References
Trees of Australia
Eucalyptus