https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14018073Edit ImageSaveSaveEditCropCustom TextPennyroyal (Mentha pulegium) and creeping thyme (Thymus serpyllum): entire flowering plants. Coloured etching by C. Pierre, c. 1865, after P. Naudin.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 793 x 1200 px | 300 dpiLarge JPEG 1413 x 2139 px | 300 dpiFree DownloadPennyroyal (Mentha pulegium) and creeping thyme (Thymus serpyllum): entire flowering plants. Coloured etching by C. Pierre, c. 1865, after P. Naudin.More