stiff sunflower
stiff sunflower (FNA Ed. Comm., 2019) is a synonym English vernacular name for:
Helianthus pauciflorus subsp. subrhomboideus (Rydberg) O. Spring & E.E. Schilling , an accepted subspecies name sensu FNA Ed. Comm., 2006c.
stiff sunflower (FNA Ed. Comm., 2019) is a synonym English vernacular name for:
Helianthus pauciflorus subsp. subrhomboideus (Rydberg) O. Spring & E.E. Schilling , an accepted subspecies name sensu FNA Ed. Comm., 2006c.