Observation 143371: Boletus L.
When: 2013-08-18

Notes: This is the same mystery bolete that was found in a different area of FPP last July (Obs. 102459). This time, it was mature enough to drop spores.

The spore print looks grayish-green rather than brown under natural light.

The spores are smooth but appear (1000x, mounted in 5% KOH) like the are “stuffed with broken glass”. I don’t know if it’s an optical illusion for I don’t have any filters installed.

Obtaining an ITS sequence met with failure due to the presence of multiple hybridized regions.

Comments from Linas Kudzma:
“I Spores are typically bolete-like and non-staining in Melzer’s. The hymenium crush mount has the usual basidia, etc, but also reveals long cells whose contents stain orange in Melzer’s, but are hyaline in a 20% Glycerol mount. Very interestingly, in 20% glycerol there are groups of distinctly reddish cells in among the normal hyaline basidia and other cells. This must be the red speckling of the pore surface. I did not even notice these red cells in the Melzer’s mount because they must not have stood out as much.”

Images

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359734
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508085
Unstained hymenium crush. Photo by L. Kudzma
508086
Hymenium crush in Melzer’s. Photo by L. Kudzma
508087
Unstained red cells in 20% glycerol. Photo by L. Kudzma

Proposed Names

28% (1)
Eye3 Eyes3
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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New pix + updated comments
By: I. G. Safonov (IGSafonov)
2015-02-20 02:33:28 CET (+0100)

Created: 2013-08-21 00:42:43 CEST (+0200)
Last modified: 2015-02-20 02:30:31 CET (+0100)
Viewed: 43 times, last viewed: 2016-12-02 21:53:55 CET (+0100)
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