Hypericum ascyron var. americanum (Spach) Y. Kimura

Hypericum ascyron var. americanum (Spach) Y. Kimura is a synonym sensu FNA Ed. Comm., 2015 of:

Hypericum ascyron subsp. pyramidatum (Aiton) N. Robson, an accepted subspecies name sensu FNA Ed. Comm., 2015.