https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14021448Edit ImageSaveSaveEditCropCustom TextVervain (Verbena officinalis): flowering stem and floral segments. Coloured engraving after J. Sowerby, 1800.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 694 x 1200 px | 300 dpiLarge JPEG 1164 x 2013 px | 300 dpiFree DownloadVervain (Verbena officinalis): flowering stem and floral segments. Coloured engraving after J. Sowerby, 1800.More