建木在中國傳說是眾神登天時當作梯子用的樹[1]，連接天界與凡間，傳說為黃帝製作。[2]
建木高沒有分枝，樹頂與樹底下分別有盤桓曲折的樹枝和樹根。它的葉子像網一樣[3]（一說葉子尖銳[4]），為青色。樹幹和刺榆樹很像，是紫色的。花是黑色的。果實為黃色，與欒樹的果實很像。整棵樹形狀像牛，樹皮很容易剝落。立在地上沒有影子[5]生長於弱水邊。[6]
參考文獻
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