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Monday, 23 May 2016

Psathyrella ammophila --- Dune Brittlestem

Dune Brittlestem Psathyrella ammophila is probably the most common fungus found on yellow (mobile) dunes and, as the name states, it is associated with Marram.  The light brown cap-colour soon changes to a dirty white as it develops.  The stipe roots deeply into the sand.
It is surprising that there are only about 250 records on FRDBI which reflects the limited coastal habitat for thie species.


  1. I spotted some of this fungus at Newborough Warren on Anglesey on April 28th 2018.

  2. I found some dune brittle stem at Ynyslas dunes near Borth west Wales 17.6.2019