Wildflowers: Arnica, Denali National Park, Alaska

Discussion in 'Plants: Identification' started by paalo, Jan 13, 2018.

  1. paalo

    paalo Member

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    Is this Nodding Arnica (Arnica lessingii) or Snow Arnica (Arnica frigida)? These plants were found late June in Denali National Park. I suspect they are Nodding Arnica, but I am not sure.
     

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  2. wcutler

    wcutler Renowned Contributor Forums Moderator VCBF Cherry Scout 10 Years

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  3. paalo

    paalo Member

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    Thank you Wendy! I have seen these pages, but I am still undecided. I was hoping someone knowing these species would chime in.

    Paalo
     
  4. Daniel Mosquin

    Daniel Mosquin Renowned Contributor UBC Botanical Garden Forums Administrator Forums Moderator 10 Years

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    I would lean toward it not being Arnica lessingii, though I am not familiar with Arnica frigida.
     
  5. paalo

    paalo Member

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    Thanks Daniel! I tend to agree. Having looked at numerous web pages, I now suspect they are Snow Arnica. One uncertainty, of course, is the degree of mislabeling of photos posted on the internet. Thats one of the dangers trying to determine species solely based on online photos.

    Paalo
     
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  6. Daniel Mosquin

    Daniel Mosquin Renowned Contributor UBC Botanical Garden Forums Administrator Forums Moderator 10 Years

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    Well, my personal experience with Arnica lessingii is that it very much nods and the ray flowers hang instead of flare.
     
  7. paalo

    paalo Member

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