Biscutella didyma var. columnae (Ten.) Halácsy Dataset Update on the Brassicaceae Species Checklist Rank VARIETY Published in Halácsy, E. von. Consp. Fl. Graec. 1: 105. (1900). Classification family Brassicaceae genus Biscutella Name Homonyms Biscutella didyma var. columnae (Ten.) Halácsy Biscutella didyma subsp. columnae (Ten.) Nyman