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   Lythrum salicaria herbacée, plante aquatique
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    Liatris spp.


    Epilobium angustifolium , Verbena hastata , Liatris spp., and Spiraea douglasii can be distinguished by closely examining the colour and floral structure. Identification is also facilitated by examining the habitat and structure of the stand. L. salicaria is found in aqautic areas such as wetlands and are the only showy reddish-purple flowered plant to develop massive monospecific stands over large wetland tracts.
    Epilobium angustifolium


    Epilobium angustifolium , Verbena hastata , Liatris spp., and Spiraea douglasii can be distinguished by closely examining the colour and floral structure. Identification is also facilitated by examining the habitat and structure of the stand. L. salicaria is found in aqautic areas such as wetlands and are the only showy reddish-purple flowered plant to develop massive monospecific stands over large wetland tracts.
    Lythrum alatum


    Lythrum alatum is also found in moist prairies and wet meadows throughout the eastern and midwestern United States. Distinguishing L. alatum from L. salicaria is important in protecting the native L. alatum , which is endangered in Maryland and Pennsylvania and of special concern in Connecticut. L. alatum can be distinguished by its alternate leaves on the upper stem, more widely spaced flowers, and smaller size (grows to an average of 0.6 metres in height).
    Spiraea douglasii


    Epilobium angustifolium , Verbena hastata , Liatris spp., and Spiraea douglasii can be distinguished by closely examining the colour and floral structure. Identification is also facilitated by examining the habitat and structure of the stand. L. salicaria is found in aqautic areas such as wetlands and are the only showy reddish-purple flowered plant to develop massive monospecific stands over large wetland tracts.
    Verbena hastata


    Epilobium angustifolium , Verbena hastata , Liatris spp., and Spiraea douglasii can be distinguished by closely examining the colour and floral structure. Identification is also facilitated by examining the habitat and structure of the stand. L. salicaria is found in aqautic areas such as wetlands and are the only showy reddish-purple flowered plant to develop massive monospecific stands over large wetland tracts.

ISSG Landcare Research NBII IUCN University of Auckland