Helianthus petiolaris Nuttall ssp. petiolaris . Common name: Plains Sunflower. Phenology: May-Aug. Habitat: Prairies, sandy open areas, eastwards in disturbed areas in sandy soil. Distribution: ON west to AB, south to TX and NM; also eastwards and westwards of that range as apparent introductions.
Origin/Endemic status: Native
Synonymy ⓘ: = Ar, FNA21, K4, NE, NY, Oh3; = Helianthus petiolaris Nutt. var. petiolaris — C, Pa, SE1; = n/a — Tat; < Helianthus petiolaris Nutt. — F, G, GrPl, Il, Mi, NcTx, RAB, S, Tx. Basionym: Helianthus petiolaris Nutt. 1821
Links to other floras: = Helianthus petiolaris ssp. petiolaris - FNA21
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Heliophily ⓘ: 9
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