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Helianthus silphioides, Helianthus simulans, Helianthus smithii, Helianthus strumosus, Helianthus tuberosus, Helianthus verticillatus, Helianthus ×laetiflorus

(tribe Heliantheae) subtribe Helianthinae genusHelianthus speciesHelianthus strumosus Linnaeus Sp. Pl. 2: 905. 1753. Edward E. Schilling Common names: Rough

might be a hybrid of H. microcephalus and H. strumosus. It may also be an extreme variant of H. strumosus that has relatively narrow leaves and small heads

cytotype of H. decapetalus intergrades (and apparently hybridizes) with H. strumosus, particularly in the southern Appalachians; individual specimens can be

Generated Map Legacy Map Ala., Ky., Tenn. Helianthus eggertii is similar to H. strumosus and H. laevigatus; it is distinguished by the distinctive blue coloration

with other polyploids, including H. pauciflorus, H. resinosus, and H. strumosus. Helianthus tuberosus is so widely spread as a weedy species that its original

Mexico (Coahuila, Nuevo León). Helianthus hirsutus is distinguished from H. strumosus by hairy stems and usually yellow (as opposed to dark) anther appendages