https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13973695Edit ImageSaveSaveEditCropCustom TextWhite horehound (Marrubium vulgare): flowering stem, root and floral segments. Coloured engraving after J. Sowerby, 1797.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 689 x 1200 px | 300 dpiLarge JPEG 1089 x 1896 px | 300 dpiFree DownloadWhite horehound (Marrubium vulgare): flowering stem, root and floral segments. Coloured engraving after J. Sowerby, 1797.More