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Notes on Agaricus section Duploannulati using molecular and morphological data

Published online by Cambridge University Press:  14 June 2005

Maryna DIDUKH ,
Rytas VILGALYS ,
Solomon P. WASSER ,
Omoanghe S. ISIKHUEMHEN  and
Eviatar NEVO
Maryna DIDUKH
Affiliation:
M. G. Kholodny Institute of Botany, National Academy of Sciences of Ukraine, 2 Tereshchenkovskaya Street, Kiev, 01001, Ukraine. International Center for Cryptogamic Plants and Fungi, Institute of Evolution, University of Haifa, Haifa 31905, Israel. E-mail: spwasser@research.haifa.ac.il
Rytas VILGALYS
Affiliation:
Department of Biology, Duke University, 139 Biological Sciences Building, Durham, NC 27708-0338, USA.
Solomon P. WASSER
Affiliation:
M. G. Kholodny Institute of Botany, National Academy of Sciences of Ukraine, 2 Tereshchenkovskaya Street, Kiev, 01001, Ukraine. International Center for Cryptogamic Plants and Fungi, Institute of Evolution, University of Haifa, Haifa 31905, Israel. E-mail: spwasser@research.haifa.ac.il
Omoanghe S. ISIKHUEMHEN
Affiliation:
Department of Natural Resources & Environmental Design, North Carolina Agricultural and Technical State University, Greensboro, NC 27411, USA.
Eviatar NEVO
Affiliation:
International Center for Cryptogamic Plants and Fungi, Institute of Evolution, University of Haifa, Haifa 31905, Israel. E-mail: spwasser@research.haifa.ac.il
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Abstract

The position of several endemic and rare species in Agaricus sect. Duploannulati and the limits of the section were investigated by analysis of sequence data from the ribosomal DNA ITS. The results supported the recognition of two groups, which we treat as subsections Chitonioides and Duploannulati. Most of the species studied proved to belong to subsect. Chitonioides. Species excluded from the section, as well as other potential members of sect. Duploannulati, are considered. Morphological traits deemed important for identification of A. nevoi, A. pequinii, A. gennadii, A. rollanii, and A. padanus are discussed. Taxonomic positions of these species in morphologically-based systems and according to molecular systematics data are compared and analyzed.

Type
Research Article
Information
Mycological Research , Volume 109 , Issue 6 , June 2005 , pp. 729 - 740
Copyright
© The British Mycological Society 2005

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