lewisia tweedyi  


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The genus Lewisia is only found in western North America and comprises about 20 species.  Lewisia tweedyi is considered to be one of the most beautiful alpine plants and is coveted by the rock gardener.  Its range is limited to eastern Washington State with one occurrence in British Columbia- on Mount Frosty.  The plants grow on steep scree slopes and rock ledges in open forest with  considerable accumulation of humus from forest debris.  The plant survives in dry areas by extending a tap root which has been reported to be as much as 2.5 m long.


Lewisia tweedyi can be seen in flower on Mount Frosty well below the snow line in late May-early June.




 


Lewisia tweedyi only grows in one location in British Columbia on the east slopes of Mount Frosty.




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