Swamp rose-mallow (Hibiscus moscheutos) COSEWIC assessment and status report: chapter 1

Assessment Summary

Assessment Summary – November 2004

Common name: Swamp rose-mallow

Scientific name: Hibiscus moscheutos

Status: Special Concern

Reason for designation: A robust, perennial herb of shoreline marshes of the Great Lakes present in Ontario at many localities, in very small areas, and generally in low numbers. The total Canadian population is estimated to consist of fewer than 10,000 plants with some, including two of the largest populations, in protected sites. The species has been subjected historically to habitat loss and several populatins have been lost recently. Populations are also at risk from habitat degradation and impact due especially to invasive exotic plants. Evidence of the spread of plants through rafting or floating clumps indicates that recolonization of extirpated sites may be possible.

Occurrence: Ontario

Status history: Designated Special Concern in April 1987. Status re-examined and confirmed in November 2004. Last assessment based on an update status report.

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