Helianthus pauciflorus subsp. subrhomboideus

Helianthus pauciflorus subsp. subrhomboideus (Rydberg) O. Spring & E.E. Schilling
Family: Asteraceae stiff sunflower [Helianthus laetiflorus var. subrhomboideus (Rydb.) Fernald]	nomenclature Resources taxonomic source: FNA v.19-21
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