White horehound (Marrubium vulgare): flowering stem, root and floral segments. Coloured engraving after J. Sowerby, 1797.
- Sowerby, James, 1757-1822.
- Date:
- 1 July 1797
- Reference:
- 25158i
Licence: Public Domain Mark
Credit: White horehound (Marrubium vulgare): flowering stem, root and floral segments. Coloured engraving after J. Sowerby, 1797. Wellcome Collection. Source: Wellcome Collection.