Observation 86980: Laricifomes officinalis (Batsch) Kotl. & Pouzar

When: 2012-01-25

Collection location: Sheldon Creek, Mendocino Co., California, USA [Click for map]

Who: Ron Lawrence (Rondango)

No specimen available

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Last legs
By: Chaelthomas (Chaelthomas)
2017-04-11 14:11:26 EDT (-0400)

If found on nothing but doug fir in multnomah county from trees with
Widths 1ft in diameter to -7ft.

In some localities it preffers one over
The other. I find in oregon it prefers doug fir. Doesnt need old growth to grow but if you want to find the iconic big ones then yes the bigger the tree the bigger the conk. In this case it looks like this was a last effort.

My amulate bag
By: Ron Lawrence (Rondango)
2012-03-28 21:23:35 EDT (-0400)

now has an addition to the milk thistle seed and New Zealand Jade I carry into the woods. Thanks so much for the ID Daniel.

Pine, Larch, Fir (I think)
By: Daniel B. Wheeler (Tuberale)
2012-03-28 21:00:16 EDT (-0400)

I most often find it on pine, typically Poderosa. But it also grows on larch sometimes. I strongly suspect old-growth Douglas-fir at higher elevations, too. Usually the tree has to be 6 feet diameter breast height for this species to be viable.

I’m not as certain whether this is a heart-wood rotter. Typically it is seen growing on the outside of the trunk. But Laetiporus sulphureus is likely a heartwood degrader too, but fruits on the outside of the trunk. Experimentation will have to wait. Most of our conifers locally have little available heartwood until the trees are over 60 years of age.

This grows with pine in America?
By: Gerhard Koller (Gerhard)
2012-03-28 18:05:27 EDT (-0400)

In Europe it’s restricted to larch in high altitudes and considered very rare. Yes, it is of medical value, hence the epitheton “officinalis”.

Definately Fomitopsis officinalis.
By: Daniel B. Wheeler (Tuberale)
2012-03-28 18:03:36 EDT (-0400)

Sampled dried material. Held in my mouth for about 25 seconds. Distinctive taste/bitterness of quinine. Arora notes it is called Quinine conk. Only Fomitopsis to have that bitter quinine taste. BTW, said to be medicinal.

Is this the specimen you wanted to send me?
By: Daniel B. Wheeler (Tuberale)
2012-03-28 04:20:32 EDT (-0400)

Fairly sure this is F. officinalis, although very young. Looks to be growing from heartwood – a good sign. Usually grows on Pinus in my area, and is often massive.

Created: 2012-01-25 22:55:01 EST (-0500)
Last modified: 2017-05-12 00:17:34 EDT (-0400)
Viewed: 148 times, last viewed: 2017-08-03 13:45:06 EDT (-0400)
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