https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13994883Edit ImageSaveSaveEditCropCustom TextFour types of lichen (Parmelia species). Coloured engraving by J. Pass, c. 1821.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 933 x 1200 px | 300 dpiLarge JPEG 2400 x 3087 px | 300 dpiFree DownloadFour types of lichen (Parmelia species). Coloured engraving by J. Pass, c. 1821.More