Gnaphalium palustre, known by the common name western marsh cudweed, is a species of flowering plant in the family Asteraceae.

The plant is native to much of western North America, where it is common in many habitats and from valley floor to mountain alpine elevations of Western Canada, the Western United States, and Northwestern Mexico. It is found from British Columbia, Alberta, and Saskatchewan south as far as Baja California Sur, Arizona, and New Mexico.

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