Good King Henry (Chenopodium bonus-henricus): flowering stem and leaves. Coloured lithograph by W. G. Smith, c. 1863, after himself.

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Good King Henry (Chenopodium bonus-henricus): flowering stem and leaves. Coloured lithograph by W. G. Smith, c. 1863, after himself. Wellcome Collection. Public Domain Mark. Source: Wellcome Collection.