Compositae Working Group (CWG) (2021). Global Compositae Database. Symphyotrichum novi-belgii var. tardiflorum (L.) G.L.Nesom. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1236627 on 2025-03-28
Contributed data: Authors Data only shown for fields conflicting with the consensus taxon record (L.) G.L. Nesom [Preliminary Checklist of North American Compositae] [details] Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Symphyotrichum novi-belgii (L.) G.L. Nesom var. tardiflorum (L.) G.L. Nesom [Preliminary Checklist of North American Compositae] Symphyotrichum novi-belgii (L.) G.L.Nesom var. tardiflorum (L.) G.L.Nesom [IPNI] Symphyotrichum novi-belgii var. tardiflorum [Govaerts World Compositae Checklist A-G] [details] LSID urn:lsid:compositae.org:names:D5B49049-73EA-42C5-A096-CF5BB343D97B [details]