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Ironbark is a common name of a number of species in three taxonomic groups within the genus ''Eucalyptus'' that have dark, deeply furrowed bark.〔Ian Brooker, "Botany of the Eucalypts" in J.J.W. Coppen, ''Eucalyptus'', 3-35, Boca Raton, Florida: CRC Press, 2002 ISBN 0-415-27879-1, p. 31〕 Instead of being shed annually as in many of the other species of ''Eucalyptus'', the dead bark accumulates on the trees, forming the fissures. It becomes rough after drying out and becomes impregnated with kino, a dark red tree sap exuded by the tree.〔CSIRO ''Forest Products Newsletter'' 1946〕 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 protective bark aids in protecting epicormic buds which allow the tree to reshoot.〔J.B. Reid & B.M. Potts, "Eucalypt Biology" in Reid ''et al.'' (eds.), ''Vegetation of Tasmania'', Australian Government, 2005, pp. 198-223〕 The bug shoe is a length of ironbark on the bottom of a ship that goes on the bottom of the skeg to protect it from shipworms. == Examples of Ironbark species == * ''Eucalyptus crebra'' F.Muell., narrow-leaved ironbark or narrow-leaved red ironbark * ''Eucalyptus fibrosa'' F. Muell., broad-leaved red ironbark * ''Eucalyptus melanophloia'' F.Muell., silver-leaved ironbark * ''Eucalyptus paniculata'' Sm., grey ironbark * ''Eucalyptus siderophloia'' Benth., Northern Grey Ironbark * ''Eucalyptus sideroxylon'' A.Cunningham ex Woolls, red ironbark or Mugga * ''Eucalyptus placita'' L.A.S.Johnson & K.D.Hill, Grey Ironbark * ''Eucalyptus staigeriana'' F. Muell. ex Bailey, lemon ironbark * ''Eucalyptus tricarpa'' (L.A.S.Johnson) L.A.S.Johnson & K.D.Hill, red ironbark. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ironbark」の詳細全文を読む スポンサード リンク
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