https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13964238Edit ImageSaveSaveEditCropCustom TextFour plant stems with catkins, all from named types of willow (Salix species). Chromolithograph by W. Dickes & co., c. 1855.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 695 x 1200 px | 300 dpiLarge JPEG 1353 x 2336 px | 300 dpiFree DownloadFour plant stems with catkins, all from named types of willow (Salix species). Chromolithograph by W. Dickes & co., c. 1855.More