Previous knowledge. Mikania scandens is a vine found in wetlands of the eastern United States (USDA). It ranges from Florida to Maine and west to Texas and is considered a noxious weed in Hawaii. It was first reported from Michigan by CD. McLouth (1896). The plant was brought to McLouth's attention in 1894, and that September, he observed it growing in the wetlands near the mouth of the Muskegon River in what is now Muskegon State Game Area (MSGA), Muskegon County. Inquiries to locals in the area allowed McLouth to conclude that M. scandens had been present since at least the mid-nineteenth century. This has remained the only report of M. scandens in Michigan up to the present (Reznicek et al. 2011). The nearest known populations are about 200 kilometers to the south in northern Indiana (Swink & Wilhelm 1994). Attempts to relocate this species in the areas described by McLouth have been unsuccessful, leading to this species being designated as extirpated from Michigan (Reznicek et al. 2011).
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