Growing on dead Callitris endlicheri
The weight of Styrofoam
A solitary, lime-green, gilled mushroom. Conditions were very dry after a long period without rain. In these conditions I expected to see some hardy polypores; this delicate agaric was a surprise.
The top of the fungus appears to be out of focus, but that is how it appeared.
It resembles Humidicutis arcohastata but the cap is flat, not conical or campanulate (bell-shaped).
See https://qldfungi.org.au/wp-content/uploads/2014/06/Humidicutis-arcohastata.pdf