Acer japonicum Thunb. Sapindaceae. Japanese maple. Small tree. Distribution: Japan, North Korea. Can be tapped in early spring for its sugar-rich sap although it is not as abundant as in Acer saccharum. Photographed in the Medicinal Garden of the Royal College of Physicians, London.

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Acer japonicum Thunb. Sapindaceae. Japanese maple. Small tree. Distribution: Japan, North Korea. Can be tapped in early spring for its sugar-rich sap although it is not as abundant as in Acer saccharum. Photographed in the Medicinal Garden of the Royal College of Physicians, London. Dr Henry Oakeley. Attribution 4.0 International (CC BY 4.0). Source: Wellcome Collection.