Helianthus pauciflorus subsp. pauciflorus

Helianthus pauciflorus subsp. pauciflorus Nutt.
Family: Asteraceae stiff sunflower [Helianthus laetiflorus var. rigidus (Cass.) Fernald, moreHelianthus rigidus (Cass.) Desf.]	nomenclature nomenclature Resources taxonomic source: FNA v.19-21 taxonomic source: FNA v.19-21
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