Flora of the Southeastern United States
2022 Edition


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Erigeron pusillus Nuttall. Southern Horseweed. Phen: (May-) Jul-Dec. Hab: Dunes, brackish marsh edges, coastal sand flats, sand prairies, old fields, disturbed areas, barrens and glades. Dist: Se. MA and CT west to s. IN, south to FL and TX, and south into tropical America.

Origin/Endemic status: Native

Syn: = F; = Conyza canadensis var. pusilla – C, G, GrPl, Mo2, Pa, SE1, Tx, Va, W; = Conyza canadensis var. pusillus – Oh3; = Erigeron canadensis var. pusillus – NY, RAB; = Leptilon pusillum – S; < Conyza canadensis – Ar, Fl7, FNA20, K2, Tn, WH3; > Conyza canadensis var. glabrata – NcTx; < Erigeron canadensis – K3, K4, NE

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image of plant© Alan M. Cressler