Observation 129317: Rubroboletus dupainii (Boud.) Kuan Zhao et Zhu L. Yang
When: 2012-09-05
( 2200m)
No herbarium specimen

Notes: Under oak.

Species Lists


With KOH

Proposed Names

29% (1)
Recognized by sight
29% (1)
Recognized by sight: Red cap, shiny when dry. Stem yellow at the apex, reddish below, pruinose. Hymenophore yellow, bruising blue. Pores circular, reddish-orange, slightly decurrent. With oaks.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
A hypothesis
By: Roy Halling (royh)
2013-02-25 01:07:51 GMT (+0000)

underpinned with substantiating data is the best way to go. Lacking a specimen, an identity is a best guess at this point.
Someone once told me about a constipated duck as a means of dispersal . . .

I’m still sceptical about it.
By: Gerhard Koller (Gerhard)
2013-02-24 19:35:23 GMT (+0000)

Usually Boletes do not have such a wide range of distribution. There could be a possibility that it has reached that far by being introduced due to globalisation via plane or other transportation. But who knows?
Then again there are so many lookalikes in Boletes and many are still poorly known despite their magnificence, especially in countries where you can only do research under threat of life.

very odd distribution for this purported species…
By: Debbie Viess (amanitarita)
2013-02-24 19:04:24 GMT (+0000)

primarily Europe, then found in North Carolina, Belize and …Iowa?
And now the west side of Mexico?

How did THAT happen??!

Shoulda saved it, but the macro looks good, esp. that shiny red cap.

North American also?
By: Alan Rockefeller (Alan Rockefeller)
2013-02-24 11:09:56 GMT (+0000)

This paper says that it grows in North America also.

To my understanding
By: Gerhard Koller (Gerhard)
2013-02-23 10:50:15 GMT (+0000)

Boletus dupainii is exclusively growing in Southern and Western Europe. However, this really looks close to it.

Bug guide
By: Alan Rockefeller (Alan Rockefeller)
2013-02-23 09:47:09 GMT (+0000)
Bug guide
By: Dan Molter (shroomydan)
2013-02-23 08:15:45 GMT (+0000)

Nice spider shout Alan. I hope you cross posted this bug guide.

B. dupainii?
By: Roy Halling (royh)
2013-02-23 06:28:00 GMT (+0000)

Could be – but I have no experience with the taxon. Thanks.

Could this be Boletus dupainii?
By: Alan Rockefeller (Alan Rockefeller)
2013-02-23 05:51:49 GMT (+0000)
A reticulation
By: Roy Halling (royh)
2013-02-23 03:43:38 GMT (+0000)

present on B. floridanus. You might try looking at the B. Ortiz-Santana et al. publication on boletes from Belize etc.

No reticulation at all
By: Alan Rockefeller (Alan Rockefeller)
2013-02-23 03:36:32 GMT (+0000)

Boletus frostii grows nearby, but there are at least two other bright red capped species which grow in the same woods and never have any trace of reticulation. One has yellow pores and the other has red pores.

By: Noah Siegel (Noah)
2013-02-23 03:32:52 GMT (+0000)

Probably in the same group as Boletus floridanus and frostii. Were these reticulated at all?

Created: 2013-02-23 03:10:51 GMT (+0000)
Last modified: 2015-09-09 00:33:08 BST (+0100)
Viewed: 181 times, last viewed: 2017-06-15 16:44:23 BST (+0100)
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