Observation 160515: Amanita aureosylvatica Tulloss, Rodrig.-Cayc., Morales-Tor. & Ovrebo nom. prov.

When: 2014-02-22

Collection location: Pantanal, Fazenda Sta. Eugenia, Mato Grosso do Sul, Brazil [Click for map]

Who: Michael Koltzenburg (miko)

No specimen available

Species Lists



Proposed Names

30% (2)
Recognized by sight
32% (4)
Recognized by sight
28% (1)
Recognized by sight: Found something very, very similar in Santa Cruz, Bolivia (observation forthcoming) which was distinctly volvate.
28% (1)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Dr. Wartchow reminds me that he dealt with something very like this mushroom…
By: R. E. Tulloss (ret)
2014-06-04 11:52:01 CDT (-0400)

in his PhD thesis under the name “Amanita aureofloccosa sensu lato.” The type of Amanita aureofloccosa comes from what is now the Democratic Republic of Congo, in Africa.


There is an orange-yellow Amanita of subsection Vittadiniae in Brazil.
By: R. E. Tulloss (ret)
2014-06-03 23:22:02 CDT (-0400)

The same or a similar species has been found in Mexico. The Amanita in question is probably not mycorrhizal considering what is known of similar species. Open wetland areas that can be occasionally submerged have been the habitat for other species of Amanita in the “free-living” group such as A. savannae in Colombia and A. pruittii in western North America.

Dr. Felipe Warchow is based in northern Brazil and has worked on a densely floccose yellow species that was found in a forested region of eastern Brazil I think. I will call his attention to this observation.


By: Christian (Christian Schwarz)
2014-02-27 16:14:19 CST (-0500)

looks almost just like Agaricus crocopeplus but with white gills.

Sorry, …
By: Michael Koltzenburg (miko)
2014-02-27 15:34:59 CST (-0500)

Sorry, no idea, I’m just a botanist ;-) who is collecting photos for this busy, crazy community ;-))

By: Richard Kneal (bloodworm)
2014-02-27 15:09:07 CST (-0500)

is Cystolepiota possible?

Created: 2014-02-27 15:04:23 CST (-0500)
Last modified: 2014-10-20 21:20:06 CDT (-0400)
Viewed: 106 times, last viewed: 2018-02-01 21:18:04 CST (-0500)
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