Razoumofskya douglasii subsp. tsugensis (Rosendahl) Piper

Razoumofskya douglasii subsp. tsugensis (Rosendahl) Piper is a synonym sensu TROPICOS of:

Arceuthobium campylopodum subsp. tsugense (Rosendahl) Nickrent, an accepted subspecies name sensu FNA Ed. Comm., 2016.