Observation 29363: Trichaptum abietinum (Dicks.) Ryvarden

When: 2009-12-02

Collection location: Fortuna, California, USA [Click for map]

Who: Timothy (greenpearfarm)

No specimen available

This observation is related to Mushroom Observer.org observation number 27068 (boletus orovillus). more comments about this polypore may be found there.

In an earlier comment (observation 27068) I described how the log, bark and all, is mounted on a carriage and sawn by a 5 ft circle saw with a 3/8in thickness.

In one of my first comments (observation 27068) I mentioned the fir had been standing dead for a couple of years before I cut it down and milled it. I mentioned the beetle(?) larvae holes throughout the tree with live larvae – I know because I looked closely after laughing at juncos and white crowned sparrows feeding on the freshly sawn slabs.

The top of the tree was rotten and had broken out the previous winter.

The bark was still fairly well attached to the log, but after the slab was cut off the side of the log, sometimes the bark would come loose, and between the two was a sheet of fungus mycelium that was previously the cambium layer under the bark. It had the consistency of thin rolled pie dough, smooth, soft and cold as it draped over my hands. I put it out of my mind as it had nothing to do with milling lumber.

The slabs that are cut off the outside of the log I cut into firewood. Some of the slabs toward the top of the tree are rotten or punky, and I am burning this now.

Last night as I was adding this wood to the fire, I noticed a knot, from a limb I had cut flush with the bark, had been overgrown by fungi. This firewood (Abies Grandis, Grand Fir we call White Fir) has an abundance of one kind of crust fungi, and I now believe these to be the fruiting bodies of the cambium mycelium I noticed as I was sawing the log 8 months ago. Other photos show the fungi growing from punky wood, and mature shelves on and from the fir stump.

Generally, each cut passed through a substantial amount of this sheet of mycelium, and the particles were thoroughly mixed into the sawdust pile. After examining the pile closely this afternoon, I found two small areas (2 sq. in.) where this polypore was beginning to grow on a vertical surface.

My guess is Stereum Sanguinolentum, but there are approximately 392 species in this genus, and I may not even have the right genus.

[admin – Sat Aug 14 02:00:32 +0000 2010]: Changed location name from ‘Fortuna, Humboldt County, California, USA’ to ‘Fortuna, California, USA



Proposed Names

56% (1)
Recognized by sight: Known to grow on Abies as well as a few other conifers.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Created: 2009-12-02 19:05:00 PST (-0800)
Last modified: 2011-09-28 13:18:44 PDT (-0700)
Viewed: 138 times, last viewed: 2017-06-06 04:22:24 PDT (-0700)
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