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Fireweeds

Chamerion (genus), “Cham”, “雜草”, “Fireweed”

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Chamaenerion is a genus of flowering plants in the family Onagraceae (the evening primrose or willowherb family). It has sometimes been included in the genus Epilobium. Members of the genus may be called willowherbs (along with Epilobium), or fireweeds, based on a common name used for C. angustifolium. They are upright herbaceous perennials, growing from a woody base or from rhizomes, with racemes of usually purple to pink flowers. All species are found in the northern hemisphere. Most occur in moist habitats; C. angustifolium is the exception, favouring disturbed ground.

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Fireweed patch in the mountains of Yellowstone National Park, Jacob W. Frank (NPS) photograph above.

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Range Maps show field notes recorded by Natural Atlas contributors and other datasets via GBIF.org

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