Observation 23866: Omphalotus illudens (Schwein.) Bresinsky & Besl

When: 2009-08-01

Collection location: Strouds Run State Park, Athens, Ohio, USA [Click for map]

Who: Dan Molter (shroomydan)

No specimen available



Proposed Names

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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By: Paul Derbyshire (Twizzler)
2009-08-10 08:33:11 PDT (-0700)

MO’s database lists them as synonyms, with O. olearius the preferred name.

with the consensus running in favor of illudens, why is the name still olearius?
By: Debbie Viess (amanitarita)
2009-08-10 08:01:40 PDT (-0700)
Current studies support separating O. olearius and O. illudens
By: Patrick Harvey (pg_harvey)
2009-08-10 07:52:08 PDT (-0700)

Excerpts from:

Mycologia, 96(6), 2004, pp. 1253-1260.
© 2004 by The Mycological Society of America
Phylogeny of the genus Omphalotus based on nuclear ribosomal DNA-sequences

Martin Kirchmair 1
Sandra Morandell
Daniela Stolz
Reinhold Pöder

Institute of Microbiology, University of Innsbruck, Technikerstraße 25, A-6020 Innsbruck, Austria

Christian Sturmbauer

Department of Zoology, Karl-Franzens-University of Graz, Universitätsplatz 2, A-8010 Graz, Austria



In all three phylogenetic algorithms (maximum parsimony, neighbor joining, maximum likelihood) the genus Omphalotus is split into two major clades. One—"O. olearius clade"—comprises O. olearius, O. olivascens var. olivascens and var. indigo, O. japonicus, O. nidiformis and O. subilludens. The second—"O. illudens clade"—includes O. illudens and O. mexicanus. ….

Mating experiments by Petersen and Hughes (1998)Go revealed high intercompatibility between O. olearius, O. olivascens and O. subilludens. In the case of O. illudens and O. nidiformis they reported a little intercompatibility with every other species…

Names again
By: Patrick Harvey (pg_harvey)
2009-08-10 07:37:43 PDT (-0700)

Well, our voters (probably mostly from the U.S.) seem to be in agreement.

Index Fungorum, CABI
By: walt sturgeon (Mycowalt)
2009-08-09 19:47:41 PDT (-0700)

Still recognizes O. illudens.

By: Dan Molter (shroomydan)
2009-08-02 18:37:55 PDT (-0700)

O. illudens is a despised name at MO.

Omphalotus illudens
By: walt sturgeon (Mycowalt)
2009-08-02 17:32:24 PDT (-0700)

Might be a better name. Omphalotus olearius refers to a European species on olive. Jack o lantern works for both…

Created: 2009-08-02 15:17:36 PDT (-0700)
Last modified: 2011-06-14 17:23:24 PDT (-0700)
Viewed: 136 times, last viewed: 2018-10-15 07:26:53 PDT (-0700)
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