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Thursday, 26 November 2015

Penrhyngwyn, Machynys

I noticed this peculiar fungus growing on an area of thinly-vegetated coastal shingle at Penrhyngwyn, Machynys SS516974 today (26/11/15) - any idea as to its identity please? The first photo below - click on it to enlarge - shows the fungus itself and the second is a view of the site/habitat, looking eastwards up the Burry Estuary; the small grey plants incidentally, are young yellow-horned poppies Glaucium flavum, a rather rare coastal shingle specialist. The site is easily accessed via the coastal path/cycletrack in the approximate mid section of the Millennium Coastal Park.


  1. It's Mucilago crustacea, sometimes known as Dog's Vomit Fungus. It's a Slimemould (myxomycete). Although the Slimemoulds still appear in many Fungi guides they are not actually a Fungus. I think I am right in saying that DNA analysis places them closer to the Protozoa.
    M. crustacea is common on unimproved pasture/grassland at this time of year.
    Hope this is helpful.

  2. Best example I've seen of the Myxo. Well done Ian.

  3. Thank you both. I recall now that Philip Jones had also told me of this slimemould last year.