Physostegia virginiana var. parviflora (Nuttall ex Gray) B. Boivin

Physostegia virginiana var. parviflora (Nuttall ex Gray) B. Boivin is a synonym sensu FNA Ed. Comm., in prep. i of:

Physostegia parviflora Nuttall ex A. Gray, an accepted species name sensu FNA Ed. Comm., in prep. i.