06.11.2019 The aforementioned Canada Frostweed

Another plant, Verbesina virginica, is known for producing curls of ice around its base in the Autumn. This plant, Helianthemum canadense (aka Crocanthemum canadense), would be expected to do the same but apparently does not.  I searched the net a bit for both images and descriptions of ice on the plant but came up empty. Possibly it does but I’m surprised there are no reports (at least in my search) so am doubtful.  Must have got its name in some other way.

A lovely flower, frost or not.

About Steve Gingold

I am a Nature Photographer with interests in all things related. Water, flowers, insects and fungi are my main interests but I am happy to photograph wildlife and landscapes and all other of Nature's subjects.
This entry was posted in Closeup Photography, Flora, Nature Photography, Quabbin, wildflower portrait, Wildflowers and tagged , , , , , , , , . Bookmark the permalink.

14 Responses to 06.11.2019 The aforementioned Canada Frostweed

  1. susurrus says:

    A very beautiful picture. I’m struck by the way the stamens all grow in the same direction, with the odd wayward ones to make us individuals feel a little better.

    Liked by 1 person

  2. I’ll go with the wayward stamen too, but what really gets me is the amazing texture of the petals.

    Liked by 1 person

  3. In the article at
    Dr. James Carter lists various sources that mention ice on Helianthemum canadense but also notes he had yet to see a photograph of ice coming from that species. Maybe this winter you’ll provide the missing corroboration.

    Liked by 1 person

  4. shoreacres says:

    I went chasing this particular rabbit after the discussion in your previous post about salsify, and found the same article Steve did. I found other articles that listed three plants as confirmed producers of ice: Verbesina virginica (white crownbeard), Cunila origanoides (American dittany), and Helianthemum canadense. Another one in our area is marsh fleabane, Pluchea odorata.

    In an article by Bob Harms, who’s well known and dependable, he says, “Pictures of these ice formations abound on the web, submitted by naturalists in all sections of the country. To this can be added Pluchea odorata (marsh fleabane, sweetscent), which I was able to observe in Central Texas in 2007–2010.”

    I haven’t been able to find a photo of Canada frostweed with ice, but they must be out there. Another researcher from College Station has photos of the flower in his gallery, and claims to have seen the ice, too. It’s something to look forward to.

    In the meantime, this gorgeous image makes me wonder if that tip of white might have influenced its name.

    Liked by 1 person

    • It is possible that someone may have seen that white and gave it that name. Hopefully the flower has not experienced a stigma as a result.

      I think it odd that Google cannot find a picture of Helianthemum candense with frost if it indeed does produce it. Especially now that there are millions of people out there with digicams and phones taking pictures of everything they see. At any rate, I will do my best, as I have pledged before, to remember to look for them this autumn. Hmmm, I should check to see if the Native Plant Trust has them at Nasami Farm. It sure would be easier to keep a close eye on one here in the yard. As far as other species with ice, there are lots of images and I’ve seen a few YouTube videos as well.

      Liked by 1 person

  5. bluebrightly says:

    Another new one to me, and what an interesting flower, close-up! Wonderful image! I wonder why the stamens are like that – they look surprised. 🙂

    Liked by 1 person

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