: From May through August, it produces one to three large flower heads (5–9 cm wide) per stem. Each head features a golden-yellow center of disk florets surrounded by 10–15 ray flowers.
: Unlike similar species like Arnica latifolia , A. cordifolia has leaves that are always stalked (petiolate) except for the very uppermost pair. Arnica cordifolia - Washington Native Plant Society arnica cordifolia
: Its most defining feature is its cordate (heart-shaped) basal leaves , which are deeply lobed at the base and attached by long stalks. This shape allows the plant to reach more horizontal leaf inclinations, helping it capture light in shadier environments. : From May through August, it produces one
Arnica cordifolia , commonly known as , is a perennial herb native to western North America, recognized for its distinctive heart-shaped leaves and bright yellow, daisy-like flowers. It typically thrives in the moist, shaded understories of conifer forests and subalpine meadows, growing from long, creeping rhizomes. Key Botanical Features cordifolia has leaves that are always stalked (petiolate)