Another Slime Mould Query

[Lancashire Lad]

Found this today, growing on the side of a European Larch.

Size is about 50mm across, and I'm assuming that it is a slime mould.

The custard yellow colouring had me thinking it was Fuligo septica, but photo's I've seen of that don't appear to be quite the same as this specimen.

Does Fuligo septica form this type of thin crusty skin as it gets older?

I'm assuming that the mould grew around the moss capsules during the plasmodium stage, rather than the moss growing in/on the slime mould?



When cross sectioned, the inside had the consistency/hardness of an average cheese , and the cut edge rapidly took on a more orange colour.

Any suggestions for ID much appreciated.

Regards
Mike.

[NickCantle]

Sure it's not a young Laetiporus sulphureus? Fuligo septica isn't robust at all and I certainly wouldn't expect to hear the consistency compared to cheese, more like Angel Delight.

Larix though...hmm

[Lancashire Lad]

Originally Posted by NickCantle

Sure it's not a young Laetiporus sulphureus? Fuligo septica isn't robust at all and I certainly wouldn't expect to hear the consistency compared to cheese, more like Angel Delight.

Larix though...hmm

Hi Nick - I seem to have slime moulds on the brain this week, and never gave Laetiporus sulphureus any thought. However, now that you've drawn my attention to it, that's exactly what this was like.

Both Jordan & Phillips say that L. sulphureus grows on deciduous trees, this was definitely on the trunk of a live Larch. (The pics. as shown are rotated by ninety degrees, the left hand edge actually being the top).

The surface was dry & "felty", but even on the original size photo's I can't make out anything that could be definite pores.

I assume that it's not out of the question for L. sulphureus to grow on Larch?

Regards
Mike.

[flaxton]

Mike
According to the Checklist - Most frequent on Quercus spp., usually on old trees in woodland or parkland, but known on many other deciduous trees. Also frequent on Taxus. Rarely reported on other conifers such as Larix, Pinus and Pseudotsuga

Mal

[NickCantle]

Originally Posted by flaxton

Rarely reported on other conifers such as Larix

That's what has me baffled.