When: 2008-01-28

Collection location: Bolinas Ridge, Marin Co., California, USA [Click for map]

Who: Ron Pastorino (Ronpast)

No specimen available

Growing on one of the many dead tanoaks in the area.

Proposed Names

48% (4)
Recognized by sight
11% (3)
Recognized by sight: The lip under the margin, the irregular zones and thickness of the gills gives it away.
55% (4)
Recognized by sight
85% (1)
Recognized by sight: Whether you believe in a Trametes sensu lato or a smaller Trametes, it is pretty well agreed that this taxon falls into Trametes.

Please login to propose your own names and vote on existing names.

= Observer’s choice
= Current consensus


Add Comment
you see what I mean.
By: Debbie Viess (amanitarita)
2017-04-02 11:27:40 EDT (-0400)

just listing something is never enough. We need to see the visible proof to KNOW what we have.

Even highly trained and well respected mycologists can and do make mistakes, and those mistakes can get passed along.

But no worries, our generation and our current findings will experience the very same thing!

Questioning results is a big part of the scientific process, and a good thing.

I suspect that we do not have Daedalea here in CA.

Now that I look at it again
By: Django Grootmyers (Heelsplitter)
2017-04-01 18:39:42 EDT (-0400)

…the pore walls look too thin for Daedalea.

North American Polypores, vol. 1
By: Django Grootmyers (Heelsplitter)
2017-04-01 18:29:11 EDT (-0400)

…is available as a PDF here. Gilbertson & Ryvarden provide a range map but don’t specify what specimens were examined.

can you link to their work please, Django?
By: Debbie Viess (amanitarita)
2017-04-01 12:04:35 EDT (-0400)

I am curious how they made that determination. Apparently, others have also made that ID in error.

This (Daedalea) is indeed an eastern species, but lots of things can get introduced to places where they don’t really belong. Take our CA Amanita phalloides. Please.

By: Django Grootmyers (Heelsplitter)
2017-03-28 20:11:01 EDT (-0400)

Gilbertson & Ryvarden report Daedalea quercina from California and Oregon although they state that it’s very rare west of the Mississippi. This does look very thick for Trametes betulina based on what goes under that name in Eastern North America, although it does look more like that than Daedalea quercina to me though.

Sorry for the confusion.
By: Noah Siegel (Noah)
2017-03-28 15:33:53 EDT (-0400)

To add to what I said.
I don’t think it has always been a western polypore, but likely an introduced one. It is well established now; it appears to have spread fairly quickly in Oregon; much like Trametes gibbosa has across eastern North America. It

It’s very easy to distinguish it from Lenzites using micro, and fairly easy in the field.
Daedalea is very tough and woody; Lenzites tends to be more pliable and have a minutely velvety to nearly tomentose cap (vs. the often roughened but not velvety cap of Daedalea).

Californian Lenzites tend to be much larger and thicker-fleshed than their eastern counterparts. I do not know of any genetic comparisons between them.

thanks Noah, for amending/clarifying your statement to read
By: Debbie Viess (amanitarita)
2017-03-28 15:10:30 EDT (-0400)

“California” records.
I still have the original one in my inbox, that merely states MO records, and hence my confusion.

I would certainly call it
By: Debbie Viess (amanitarita)
2017-03-28 14:39:36 EDT (-0400)

a PRIMARILY eastern species, though, assuming that the few obsies from the West shown here are indeed Daedalea.

One down side of MO is conversations get lost in time and space. Never read your Trametes/Daedalea remarks here, don’t follow your work.

Horrifyingly enough, since I also doubt these CA Daedalea IDs, this will be the second time this week that we are mycologically agreeing online.

What’s next, peace in the Mideast?

As I have mentioned here before
By: Noah Siegel (Noah)
2017-03-28 14:01:21 EDT (-0400)

I think all California MO records of Daedalea quercina are Trametes/Lenzites betulina.

Daedalea quercina is somewhat common in the Willamette Valley in Oregon, so I wouldn’t call it an eastern polypore.

are we certain that this is Daedalea quercina?
By: Debbie Viess (amanitarita)
2017-03-28 11:55:16 EDT (-0400)

which is an eastern polypore?

certainly one of the very few purported examples of CA sightings here should be DNA matched to known samples, so that we know for sure.