Nodding Arnica, Parry's Arnica
Arnica parryi
Synonyms: Arnica angustifolia ssp. eradiata, Arnica parryi ssp. parryi, Arnica parryi ssp. sonnei, Arnica parryi var. parryi, Arnica parryi var. sonnei
The photo above shows the discoid inflorescence
of nodding arnica as seen along forest road 82 above spur road 190 on the southeastern
side of Mt. Adams.......July 1, 2005. The flower heads are typically
lacking in ray flowers, which if present, are greatly reduced in size and number.
The photo above shows a close-up side-view
of the flower head of nodding arnica as seen along forest road 82 above spur
road 190 on the southeastern side of Mt. Adams.......July 1, 2005. Note the numeorus long, spreading, gland-tipped hairs on the involucre and on
the upper stem.
The photo above shows a basal leaf of nodding
arnica as seen along forest road 82 above spur road 190 on the southeastern
side of Mt. Adams.........July 1, 2005. The leaves of this species are
broadly lanceolate to lance-ovate in outline with entire margins or if present,
regularly toothed. The similar rayless arnica (Arnica discoidea), has
leaves that are ovate to somewhat heart-shaped with irregularly toothed margins.
Nodding arnica as photographed at the small
frog pond along the Round the Mt. Trail at the east end of Bird Creek Meadows.......mid
September 1998. Note that this species lacks or has reduced ray flowers.
The photograph above shows an aging lower leaf
of nodding arnica as photographed at the small frog pond along the Round the
Mt. Trail at the east end of Bird Creek Meadows.......mid September 1998.
The photo above shows the seed head of nodding
arnica as photographed at the small frog pond along the Round the Mt. Trail
at the east end of Bird Creek Meadows.......mid September 1998.
Paul Slichter