Arnica rydbergii is a North American species of flowering plant in the family Asteraceae, known by the common name Rydberg's arnica or subalpine arnica or subalpine leopardbane.Flora of North America, Rydberg’s arnica, Arnica rydbergiiMontana field guide, Subalpine Arnica - Arnica rydbergiiPaul Slichter, Arnicas East of the Cascade Mts. of Oregon and Washington, Rydberg's Arnica, Subalpine Arnica, Subalpine Leopardbane Arnica rydbergii It is native to western Canada (Alberta, British Columbia), and the western United States (Alaska, Washington, Oregon, Utah, Idaho, Montana, Utah, Wyoming, Colorado, South Dakota).Biota of North America Program 2014 county distribution map
Arnica rydbergii is an herb up to 35 cm (14 inches) tall. Flower heads are yellow, with both ray florets and disc florets. It grows in alpine meadows and rocky slopes at high altitudes in mountainous areas.Greene, Edward Lee 1899. Pittonia 4(20D): 36–37
The species is named for Swedish-American botanist Per Axel Rydberg, 1860–1931.
References
External links Southwest Colorado Wildflowers photos of several species of Arnica The American Southwest