Observation 81341: Cystoderma fallax A.H. Sm. & Singer
When: 2011-10-29
Herbarium specimen reported

Notes: part of Yosemite Fungal Survey.

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Eye3 = Observer’s choice
Eyes3 = Current consensus

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Just heard back…
By: Douglas Smith (douglas)
2013-04-19 15:53:37 CDT (-0400)

Just heard back from Nhu, that no C. fallax has been sequenced at Berkeley at least. So, there might be room for a difference with the California material, compared to the European C. carcharias.

I guess in full disclosure, I have material of both in my home herbarium…

no rush
By: Britney Ramsey (Riverdweller)
2013-04-19 14:57:02 CDT (-0400)

I must have misunderstood which was the preferred name. My bad

Not sure this is a rush…
By: Douglas Smith (douglas)
2013-04-19 14:33:30 CDT (-0400)

The paper is: “The phylogeny and taxonomy of genera Cystoderma and Cystodermella (Agaricales) bosed on nuclear ITS and LSU sequences”, I. saat et al., Mycol. Progress (2009) 8: 59-73.

So, this is from 2009, so not really a rush. But they show that 3 samples of C. fallax are pretty much exactly the same as 2 samples of C. carcharias, in ITS sequences (and one called C. intermedium). And looking at the details, the species only are different based on color, other macro, and micro-details agree.

There is one caveat, perhaps, only one of the C. fallax sequences came from US material, and that was from Arizona. I wonder if any of the Pt. Reyes material has been sequences for C. fallax?

But it seems to me, I feel like at least, I’m coming late to this news, and I should have gone over this years ago.

the reference that you cited, Brittany…
By: Debbie Viess (amanitarita)
2013-04-19 14:16:36 CDT (-0400)

plus IF and Mycobank all list Cystoderma fallax as the preferred name.
Cystoderma carcharias var. fallax is a synonym.

Why the rush to switch?

Created: 2011-11-02 20:20:00 CDT (-0400)
Last modified: 2013-12-03 13:25:25 CST (-0500)
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