https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13964154Edit ImageSaveSaveEditCropCustom TextChrist's thorn plant (Ziziphus spina-christi): flowering stem. Coloured engraving, c. 1817.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 753 x 1200 px | 300 dpiLarge JPEG 1366 x 2178 px | 300 dpiFree DownloadChrist's thorn plant (Ziziphus spina-christi): flowering stem. Coloured engraving, c. 1817.More