Rudbeckia columnifera Nuttall
Rudbeckia columnifera Nuttall is a synonym sensu FNA Ed. Comm., 2006c of:
Ratibida columnifera (Nuttall) Wooton & Standley, an accepted species name sensu FNA Ed. Comm., 2006c.
Rudbeckia columnifera Nuttall is a synonym sensu FNA Ed. Comm., 2006c of:
Ratibida columnifera (Nuttall) Wooton & Standley, an accepted species name sensu FNA Ed. Comm., 2006c.