Rydberg's Arnica, Subalpine Arnica, Subalpine Leopardbane
Arnica rydbergii
Synonym: Arnica aurantiaca
A close-up of the flower head of Rydberg's arnica as seen in the on the Olympic Peninsula........July 2008.
A close-up sideview of the flower head and involucral bracts of Rydberg's arnica as seen in the on the Olympic Peninsula........July 2008.
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2 additional views of Rydberg's arnica as seen in the on the Olympic Peninsula.......July 2008. Click each photo to see an enlarged view.
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What might be rydberg's arnica as seen on gravelly soils at the head of Badger Valley, Olympic National Park.........July 25, 2014. If not Arnica rydbergii, then it might be A. gracilis?.
Paul Slichter