Cirsium nelsonii (Pammel) Petrak
Cirsium nelsonii (Pammel) Petrak is a synonym sensu FNA Ed. Comm., 2006a of:
Cirsium canescens Nuttall, an accepted species name sensu FNA Ed. Comm., 2006a.
Cirsium nelsonii (Pammel) Petrak is a synonym sensu FNA Ed. Comm., 2006a of:
Cirsium canescens Nuttall, an accepted species name sensu FNA Ed. Comm., 2006a.