Ectypa plantarum ratisbonensium :
Regensburg :Verfertiget und verlegt von Johann Mayr ... und gedruckt mit Zeitlerischen Schriften,1787-1793.
biodiversitylibrary.org/page/59792850
Description: Français : Sinapis arvensis Pont en aval de Revigny-sur-Ornain (Meuse), France. Date: 5 June 2005, 16:47:36. Source: Own work. Author: Olivier Pichard.
Description: Deutsch: Blatt eines gelbblühenden Wildkrautes (Acker-Senf), das sich im Vorgarten angesiedelt hat. Date: 3 December 2014, 02:49:05. Source: Own work. Author: E. Harfst.
No machine-readable author provided. TeunSpaans assumed (based on copyright claims).
Wikimedia Commons
Description: Deze foto toont de bloemen van Herik. Ik nam de foto langs een sloot in Mariahoeve in Den Haag. This photo shows the flowers of sinapis arvensis. I took the photo in The Hague, Netherlands. Date: 17 October 2005 (according to Exif data). Source: No machine-readable source provided. Own work assumed (based on copyright claims). Author: No machine-readable author provided. TeunSpaans assumed (based on copyright claims).