Sappanwood tree (Caesalpinia sappan): flowering branch, pod and thorns. Coloured etching by J. Pass, c. 1799, after J. Ihle.

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Sappanwood tree (Caesalpinia sappan): flowering branch, pod and thorns. Coloured etching by J. Pass, c. 1799, after J. Ihle. Wellcome Collection. Public Domain Mark. Source: Wellcome Collection.