Carex canescens var. sphaerostachya Tuckerman
Carex canescens var. sphaerostachya Tuckerman is a synonym sensu FNA Ed. Comm., 2002a of:
Carex brunnescens subsp. sphaerostachya (Tuckerman) Kalela, an accepted subspecies name sensu FNA Ed. Comm., 2002a.