*Erigeron bonariensis Linnaeus. South American Horseweed. Phen: Apr-Oct. Hab: Fields, disturbed areas. Dist: Apparently native of South America. Se. VA south into the tropics.

Origin/Endemic status: South America

Synonymy: = F, K3, K4, RAB; = Conyza bonariensis (L.) Cronquist – Ar, Bah, C, Fl7, FNA20, FNA20, K2, SE1, Tx, Va, WH3; = Conyza floribunda Kunth – G, misapplied; = Leptolon bonariensis (L.) Small; ? Conyza ambigua DC.; > Leptilon bonariense (L.) Small – S; > Leptilon linifolium (Willd.) Small – S

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