Symphyotrichum ontarionis (Wiegand) Nesom var. ontarionis . Common name: Bottomland Aster. Phenology: Aug-Oct. Habitat: Bottomlands, swamps, bogs. Distribution: QC, ON, MN, and SD, south to WV, GA, AL, MS, LA, and TX.

Origin/Endemic status: Native

Taxonomy Comments: See Nesom (1997) and Brouillet & Labrecque (1997). Semple et al. (2024) reported two ploidies for this taxon: 2n=16 and 2n=32.

Synonymy ⓘ: = Ar, FNA20, K4, Mi, Va, Semple et al (2024); = Symphyotrichum ontarione var. ontarione — Nesom (1994a), orthographic variant; < Aster lateriflorus (L.) Britton — RAB; < Aster ontarionis Wiegand — C, F, G, GrPl, SE1, W; < Symphyotrichum ontarionis (Wiegand) G.L.Nesom — Il, NE, NY, Tn. Basionym: Aster ontarionis Wiegand 1928

Links to other floras: = Symphyotrichum ontarionis var. ontarionis - FNA20

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: FAC (name change)
• Eastern Mountains and Piedmont: FAC (name change)
• Great Plains: FAC (taxonomic split from wetland indicator species)
• Midwest: FAC (taxonomic split from wetland indicator species)
• Northcentral & Northeast: FAC (taxonomic split from wetland indicator species)

Heliophily ⓘ: 6