Penstemon menziesii var. davidsonii (Greene) Piper
Penstemon menziesii var. davidsonii (Greene) Piper is a synonym sensu FNA Ed. Comm., 2019 of:
Penstemon davidsonii Greene var. davidsonii, an accepted variety name sensu FNA Ed. Comm., 2019.
Penstemon menziesii var. davidsonii (Greene) Piper is a synonym sensu FNA Ed. Comm., 2019 of:
Penstemon davidsonii Greene var. davidsonii, an accepted variety name sensu FNA Ed. Comm., 2019.