Taxa: Cirsium undulatum (Carduus undulatus, Cirsium megacephalum, Cirsium undulatum var. megacephalum, Cnicus undulatus, Cnicus undulatus var. megacephalus), Cirsium undulatum var. undulatum (Carduus helleri, Carduus undulatus, Cirsium helleri, Cirsium megacephalum, Cirsium ochrocentrum var. helleri, Cirs
... (show all)ium undulatum var. megacephalum, Cnicus undulatus var. megacephalus)