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''Eucalyptus dura'', also known as the smooth-branched ironbark, or gum-topped ironbark, is a Eucalyptus tree of eastern Australia. It is a relatively uncommon tree found on dry ridges and mountainous regions of north-east New South Wales and south-east Queensland, particularly around the McPherson Range and peaks such as Mount Greville.〔(【引用サイトリンク】work=EucaLink: a Web Guide to the Eucalypts )〕 A medium-sized tree, it can grow to tall. Major trunks have a dark, hard bark that is furrowed. In contrast, smaller branches near the top of the canopy have smooth white bark (hence the names "smooth-branched" and "gum-topped"). Leaves are alternate, concolorous (same colour in each side) or slightly discolorous and semi-glossy.〔(【引用サイトリンク】work=Euclid: Eucalypts of Australia )〕 The leaves range in size from long. The woody fruits are long. The leaves of E. dura are rich in oils, particularly β-phellandrene and 1,8-cineole. These oils may be suitable for development of a bacteriostat. 〔 〕 ==Photo gallery== File:Eucalyptus-dura-main-trunk-bark.jpg|Deeply furrowed, tough bark from the lower trunk of Eucalyptus dura File:Eucalyptus-dura-gum-top.jpg|Smaller branches of Eucalyptus dura are smooth and silvery-grey near the canopy. File:Eucalyptus-dura-capsules.jpg|Small, pear-shaped capsules with ribs of Eucalyptus dura 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「Eucalyptus dura」の詳細全文を読む スポンサード リンク
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