Ambrosia bidentata Michaux. Lanceleaf Ragweed. Phen: Jul-Nov. Hab: Barrens, prairies, mafic woodlands. Dist: S. OH, c. IN, c. IL, and s. IA south to SC (Bradley et al. [in prep.]), nw. GA, n. AL, c. LA and c. TX. Scattered occurrences in other areas probably represent introductions.

Origin/Endemic status: Native

Synonymy: = Ar, C, F, FNA21, G, GrPl, Il, K3, K4, NcTx, NE, Oh3, Ok, RAB, S, SE1, Tn, Tx, Va, McMillan & Prevost (2022)

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