Arnica spathulata is a rare North American species of arnica in the sunflower family, known by the common name Klamath arnica. It is native to the Klamath Mountains of northwestern California (Humboldt, Trinity, Siskiyou, and Del Norte Counties) and southwestern Oregon (Curry, Josephine, Jackson, and Douglas Counties). It grows in woodland habitat, almost exclusively on serpentine soils.