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Name: Omphalotus illudens (Schwein.) Bresinsky & Besl

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Rank: Species
Status: Accepted
Name: Omphalotus illudens
Author: (Schwein.) Bresinsky & Besl
Citation: Beih. Sydowia 8: 106. 1979.

Classification: Edit

Domain: Eukarya
Kingdom: Fungi
Phylum: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Tricholomataceae
Genus: Omphalotus

Notes on Taxonomy: Edit

Kirchmair et al. (2004) “Phylogeny of the Genus Omphalotus Based on Nuclear Ribosomal DNA-Sequences” Mycologia 96(6):1253-60 provides very compelling evidence that Omphalotus illudens is distinct from Omphalotus olearius based on both sequence data and mating studies. The samples they use for O. olearius all come from southern Europe. O. illudens, on the other hand, was described from the US and samples used in the paper came from the US and northern Europe. Regarding morphological differences " The above paper says: “Kirchmair et al (2002) said that O. illudens can be distinguished from O. olearius by smaller spores and an umbonate pileus”.

Brief Description: See More | Edit
Descriptions: Create

Version: 8
Previous Version: 7

First person to use this name on MO: Nathan Wilson
Editors: Michael Wood

Comments: Add Comment

Created: 2010-08-17 14:00:02 CDT (-0400)
By: Michael Wood (mykoweb)
Summary: Clearly two species

Robert Sasata is correct, there are clearly two species here. Besides the Kirchmair et al paper he sites, also see:

Kirchmair, M., Pöder, R., Huber, C.G. & Miller Jr., O.K. (2002). Chemotaxonomical and morphological observations in the genus Omphalotus (Omphalotaceae). Persoonia 17(4): 583-600.


Created: 2010-05-26 11:44:49 CDT (-0400)
By: Robert Sasata (Sasata)
Summary: Different species

This was discussed in Kirchmair et al. (2004) “Phylogeny of the Genus Omphalotus Based on Nuclear Ribosomal DNA-Sequences” Mycologia 96(6):1253-60. Phylogenetic analysis clearly shows they are different species, despite the outdated opinions of some authors, who could not even agree on the characters that separated the two.

Created: 2010-05-26 10:51:30 CDT (-0400)
By: Erin Page Blanchard (CureCat)
Summary: .

Hmm, I am not sure if the two names represent different taxa (O. olearius is a European name, while O. illudens is an Eastern North American name), or if they are synonyms; in which case I wonder which is given presidence.

IndexFungorum still has the two taxa split, and Agaricus olearius was described in 1815, while Agaricus illudens was described in 1822.

So if they are synonymous, I would like to hear the argument for why the older epithet (O. olearius) should be deprecated in favour of O. illudens.


Created: 2007-01-10 00:03:45 CST (-0500) by Nathan Wilson (nathan)
Last modified: 2013-01-10 19:27:52 CST (-0500) by Nathan Wilson (nathan)
Viewed: 882 times, last viewed: 2015-07-03 16:17:11 CDT (-0400)
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