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Helianthus laetiflorus Persoon. Phen: Late Jul-Sep. Hab: Fields, woodland edges, disturbed areas; introduced from farther west. Dist: Widely scattered in e. and c. North America. Perhaps a naturally hybrid-derived species in the Midwest, and introduced eastwards.

Origin/Endemic status: Native

Taxonomy Comments: Helianthus laetiflorus is believed to be a derivative of the hybrid of H. pauciflorus Nuttall ssp. subrhomboideus (Rydberg) O. Spring & E. Schilling and H. tuberosus.

Synonymy: = G, Pa, RAB, S, SE1, Va, WV; = Helianthus ×laetiflorus Pers. (pro sp.) – C, FNA21, GrPl, Il, K1, K3, K4, Mi, NE, Oh3, Tn; = Helianthus laetiflorus Pers. var. laetiflorus – F; = n/a – NY, Tat; ~ Helianthus scaberrimus Elliott

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Heliophily ?: 8

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image of plant© Alan Cressler: Helianthus laetiflorus (Helianthus Xlaetiflorus), Pine Log, Bartow County, Georgia 1 by Alan Cressler source | Original Image ⭷
image of plant© Michael J. Oldham, some rights reserved (CC BY-NC), uploaded by Michael J. Oldham source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Michael J. Oldham, some rights reserved (CC BY-NC), uploaded by Michael J. Oldham source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Michael J. Oldham, some rights reserved (CC BY-NC), uploaded by Michael J. Oldham source CC-BY-NC, permission granted to NCBG | Original Image ⭷

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