Invasion

Invasion Description

None

Geographic Extent

Skagit County/WA/Padilla Bay (1960, Duggan 1963. cited by Carlton 1979; Riggs 2011); Wonham et al. 2005; Skagit County/WA/Samish Bay (Duggan 1963, cited by Carlton 1979); Bay View State Park, Skagit County/WA/Padilla Bay (1960, Abbott 1974)