Heartleaf Arnica, Heart-leaf Arnica, Heart-leaf Leopardbane
Arnica cordifolia
Synonyms: Arnica cordifolia var. cordifolia, Arnica cordifolia var. pumila
The photo above shows heart-leaf arnica as seen under Oregon white oaks on the east bank of the Klickitat River along the River Route Road.........May 3, 2008.
The photo above shows heart-leaf arnica as
seen next to a DNR rock quarry at about 4100' abreast the ridge dividing the
Dairy Creek and Cougar Creek drainages at the southeastern corner of Mt. Adams.................May
29, 2005.
The photo above shows a close-up of the involucre of heart-leaf
arnica as seen at 4100' atop the ridge dividing the Cougar and Dairy Creek drainages
on the eastern slopes of Mt. Adams.........June 17, 2006. Note
the numerous spreading hairs on the involucre.
Heart-leaf arnica photographed near the photo above but as one
of the earliest members of this species to bloom on the mountain on May 22,
2005.
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The photos above show close-ups of the dorsal (left) and ventral (right) surfaces
of a basal leaf of heart-leaf arnica. Photographed at 4100' atop
the ridge dividing the Cougar and Dairy Creek drainages on the eastern slopes
of Mt. Adams........June 17, 2006.
Paul Slichter