| Author | Michaux | |
| Distribution | Scattered in the Mountains and Piedmont. There has been some uncertainty whether records of this species in the eastern states are natural or not. The primary range lies in the Midwest, and many prairie species show a similar range, for which eastern records are considered "native" or "probably native". Weakley (2018) shows its occurrence in the Southeastern states as native, and makes no comments in the text about its unsettled provenance in NC or other Southeastern states. As a result, the editors are considering all NC records as natural, at least for now.
CT to MN, south to GA and TX. | |
| Abundance | Apparently rare to uncommon, but where found can be locally abundant, such as a powerline through mafic soil in NW Richmond County (2021). Perhaps overlooked and under-collected owing to the perception this is a non-native species. As the NCNHP has not given a State Rank, this website offers an S2? rank, with a Watch List status. | |
| Habitat | NC occurrences are from disturbed areas such as powerlines, recently cleared lots, and pastures. The Richmond and Stanly County populations occur in powerlines over mafic rock -- very likely natural occurrences. In the primary portion of the range it favors prairies and barrens. | |
| Phenology | Flowering and fruiting August-October. | |
| Identification | Unlike our other ragweeds, this one's leaves are not deeply cut, but are simple, lance-shaped with two sharp lobes or teeth near the base. The stems grow 1-2.5 feet tall, branched, with terminal inflorescences dense and spike-like, 1-3 inches long. Plants have numerous colorless hairs. | |
| Taxonomic Comments | None
| |
| Other Common Name(s) | None | |
| State Rank | [S2?] | |
| Global Rank | G5 | |
| State Status | [W7] | |
| US Status | | |
| USACE-agcp | | |
| USACE-emp | | |
