Kohler's Medizinal-Pflanzen in naturgetreuen Abbildungen mit kurz erlauterndem Texte :.Gera-Untermhaus :Fr. Eugen Kohler,[1883-1914].biodiversitylibrary.org/page/303650
close up image of Lactuca serriola PRICKLY LETTUCE at the James Woodworth Prairie Preserve - leaf detail showing numerous prickly hairs on margins and on the underside of the main vein
close up image of Lactuca serriola PRICKLY LETTUCE at the James Woodworth Prairie Preserve - a single bloom at full flower showing stigma and anther detailThis is an invasive, non-native species at the Peacock/Woodworth Prairie.
