Observation 51604: Gastroboletus vividus Trappe & Castellano
When: 2010-08-28
Herbarium specimen reported

Proposed Names

29% (1)
Recognized by sight: part of the Yosemite Fungal Survey.
29% (1)
Recognized by sight: Brilliant red and yellow secotioid bolete. MO rejected this name at first attempt. Found with Red Fir, in area where seen before.
Used references: Bessettes Big Bolete Book.
75% (3)
Eye3 Eyes3
Used references: Mycotaxon 75: 153-179
Mycotaxon 83: 409-414.
Castellano, M., J. Smith, T. O’Dell, E. Cazares and S. Nugent. 1999. Handbook to Strategy 1 Fungal Species in the Northwest Forest Plan. PNW-GTR-476. U.S. Department of Agriculture, Portland, OR. 195p.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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I took two and left the rest…
By: Debbie Viess (amanitarita)
2010-09-03 14:42:11 EDT (-0400)
Heck of an eye, Darv!
By: Daniel B. Wheeler (Tuberale)
2010-09-02 01:37:49 EDT (-0400)

I’d forgotten about this species, even though I had read the description. Never thought I’d ever see it in the virtual flesh, as it were.

Excellent job with the collection, Debbie. G. vividus is one of the least collected of the Gastroboletus. Were there other specimens in the area, or did you collect everything you could find? Took Cass to my G. turbinatus site last year, I think, and he immediately found about 15 specimens that I sure didn’t see.

spores are inamyloid…
By: Debbie Viess (amanitarita)
2010-09-01 21:37:15 EDT (-0400)

other features fit as well.
I think you nailed it, Darv. It sure as heck is a VIVID Gastrobolete!

you could be right, Daniel…
By: Debbie Viess (amanitarita)
2010-09-01 12:50:07 EDT (-0400)

Altho superficially similar to the colors in subgenus turbinatus (as depicted in the Bessettes Bolete Book) this critter definitely didn’t blue rapidly. In fact, it retained its brilliant, pure red and yellow colors even when fully dried! I will check the spores today…could be more G. amyloideus. Or…?

Similar and Might be
By: Daniel B. Wheeler (Tuberale)
2010-09-01 11:19:31 EDT (-0400)

G. turbinatus is seldom so red in my experience: might be another Gastroboletus.
Unless extreme care was taken in removing these specimens, there should have been extensive, immediate bluing of the stipe and any damage to the gills. I do see a tiny spot of blue near the gills. When I slice or bruise this in the least, the bluing reaction is immediate and profound: one of the key field identification markers for me. Even when cameras are preset and focused, bluing rarely caught on film, as reaction nearly instantaneous.

You were either extraordinarily careful with this collection, or this may be one of the less-collected Gastroboletus species.

Created: 2010-08-29 21:25:39 EDT (-0400)
Last modified: 2014-06-24 16:11:07 EDT (-0400)
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