Distribution: Scattered locations throughout Washington; along Columbia River near Portland, OR, introduced in much of North America.
Habitat: Swamps, lakes, and streams.
Flowers: June-August
Origin: Introduced from South America
Growth Duration: Perennial
Conservation Status: Not of concern
[none provided]
PNW Herbaria: Specimen records of Ludwigia hexapetala in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Ludwigia hexapetala checklist entry
OregonFlora: Ludwigia hexapetala information
E-Flora BC: Ludwigia hexapetala atlas page
CalPhotos: Ludwigia hexapetala photos