Pteridium aquilinum var. lanuginosum (Bongard) Fernald

Pteridium aquilinum var. lanuginosum (Bongard) Fernald is a synonym sensu USDA NRCS, 2009+ of:

Pteridium aquilinum subsp. pubescens (Underw.) J.A. Thomson, Mickel & Mehltreter, an accepted subspecies name sensu Hassler, 2014-2024+.