Observation 80992: Suillellus amygdalinus (Thiers) Vizzini, Simonini & Gelardi

When: 2011-10-29

Collection location: Lafayette Moraga Regional Trail, Contra Costa Co., California, USA [Click for map]

Who: BakerSt10

No specimen available



Proposed Names

56% (1)
Recognized by sight: Growing with Quercus agrifolia, Coast Live Oak

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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I have no doubt
By: Roy Halling (royh)
2011-11-08 15:51:55 CDT (-0400)

re: your observation skills. To see if B. amygdalinus hyphae are on oak roots would be a great project. Otherwise, it’s “guilt by association” and there’s a lot of that kind of observation, including my own.

By: BakerSt10
2011-11-08 15:45:00 CDT (-0400)

I checked for the close by trees carefully, there was no manzanita or madrone within 150’. I also took the oak leaf home and IDed it as a coast live oak.
All of the mushrooms even the moldy ones were within 2’ of each other with very little other fungi on the trail. It was still early in our season.


By the way,
By: Roy Halling (royh)
2011-11-08 15:26:38 CDT (-0400)

the authority for B. amygdalinus is incorrect - it should just be Thiers, not (Thiers) Thiers. This latter looks like he created a comb. nov, which he didn’t do. HDT just created a new name for his illegitimate _B. puniceus Thiers non Chiu. The TYPE is still the specimen on which the name B. puniceus Thiers non Chiu still hangs. We properly call it B. amygdalinus Thiers now. Don’t you love nomenclature?!

A great study
By: Roy Halling (royh)
2011-11-08 15:19:55 CDT (-0400)

would be to see the mycorrhizal connection with live oak. Mind you, I’ve only seen the species in the Sierra foothills and in Mendocino with manzanitas and madrone.
I thought Leccinum monticola in Costa Rica was associated with oak at one time. Then I saw the thing growing above timberline where no oaks were present, but there were nearly pure stands of Comarostaphylis arbutoides (used to be called Arctostaphylos). Lo and behold, when I went back down to the oak stands, there was Comarostaphylis mixed in – blew me away. I never had the chance to see if the Leccinum was on the oak roots, but my grad student at the time, Todd Osmundson did a nifty study to show unequivocally the partnership between the bolete and the ericad. Sweet study . . .

In Santa Cruz
By: Christian (Christian Schwarz)
2011-11-08 15:03:53 CDT (-0400)

this species grows with live oak – I sometimes see it around madrone and manzanita, but don’t think of it as restricted to or preferring those hosts

By: Roy Halling (royh)
2011-11-08 13:10:26 CDT (-0400)

or madrone was around right? That’s what it’s supposed to hitch up with. Good to see it posted here. Not sure about the mouldy ones tho’.

Created: 2011-10-29 18:54:38 CDT (-0400)
Last modified: 2015-12-16 19:36:32 CST (-0500)
Viewed: 86 times, last viewed: 2017-06-10 03:01:53 CDT (-0400)
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