Sonchus pustulatus Willk. in Willkomm & Lange, Prodr. Fl. Hispan. 2: 242. 1865
Sonchus pustulatus in Willkomm & Lange, Prodr. Fl. Hispan. 2: 242. 1865
is basionym for Sonchus tenerrimus subsp. pustulatus in Battandier & Trabut, Fl. Algérie, Dicot.: 555. 1889
Sonchus pustulatus in Willkomm & Lange, Prodr. Fl. Hispan. 2: 242. 1865