https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13993151Edit ImageSaveSaveEditCropCustom TextThree plants, including a cornflower (Centaurea cyanus) and an iris: flowering stems with two grasshoppers. Etching by N. Robert, c. 1660, after himself.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 871 x 1200 px | 300 dpiLarge JPEG 1494 x 2058 px | 300 dpiFree DownloadThree plants, including a cornflower (Centaurea cyanus) and an iris: flowering stems with two grasshoppers. Etching by N. Robert, c. 1660, after himself.More