I have watched this particular fungi now for about two months. I believe it is sometimes referred to as dogs vomit. I do not have a scientific name for it, but I did remove it and photograph the underside. There was a lot of yellow (spore) I would presume lying on the ground and under the edges of the Cap (if you could call it that.) It did not have any real decisive odour. It was probably 5-7 inches across but had no real conventional shape. The yellow colour was always bright even after two months. I have seen this appear in the same area each season but only in this area and nowhere else.

[admin – Sat Aug 14 01:59:35 +0000 2010]: Changed location name from ‘Comboyne’ to ‘Comboyne, New South Wales, Australia’

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Copyright © 2008 Ian Dodd Kundabung NSW Australia
Copyright © 2008 Ian Dodd Kundabung NSW Australia
Copyright © 2008 Ian Dodd Kundabung NSW Australia
Copyright © 2008 Ian Dodd Kundabung NSW Australia

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I will check again next season.

This Mould\Fungi will probably be at the same spot next season. If it does show up I will get some advice as how to identify it before I touch it. Thanks to all for the input.

Slime mold
By: Daniel B. Wheeler (Tuberale)
2008-08-13 03:57:59 PDT (-0700)

I think Debbie has it right. It looks like a form of slime mold, but not one known to me.

Yellow mystery

To answer some of the questions ; no other mushrooms were evident in the immediate area. The yellow substance was not wet but powdery. It may have been a second fungi and I assumed it was the same one all the time. It was at the base of a tree where I have seen it before but not photographed it.

By: Darvin DeShazer (darv)
2008-07-09 11:24:42 PDT (-0700)

The bright yellow looks like it might be some sort of Hypomyces that’s covering another mushroom. Two months seems too long of a time period for a Hypomyces infection. Were there other NORMAL looking mushrooms in the area, but lacking the yellow color? Perhaps mushrooms with short stems like this one.

Dog vomit slime…
By: Debbie Drechsler (debdrex)
2008-07-09 10:33:57 PDT (-0700)

…in northern California is Fuligo septica but this doesn’t appear to be the same thing. Is it continuously wet? Check out the pictures on this site and see if they look like the same thing. F. septica doesn’t stay yellow and the spore mass is black, not yellow.