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Abstract Detail


MSA - Systematics/Evolution

Smith, Matthew  [1], Healy, Rosanne [2].

Otidea subterranea sp. nov.: Otidea goes below ground.

Evidence suggests that truffle-like sporocarp forms have evolved many times in the Pezizales, but primarily from epigeous ancestors within ectomycorrhizal clades. There are several ectomycorrhizal clades, however, that contain no known hypogeous species. We collected specimens of an unusual unidentified truffle from mixed oak woodlands in Iowa. Although clearly a member of the Pezizales (Ascomycota), this hypogeous species did not belong to any of the described truffle genera. Based on a combination of ecological, phylogenetic, and morphological evidence we determined that this new truffle is a hypogeous member of the genus Otidea (Pyronemataceae), a lineage with no described truffle species. We describe it here as a new species, Otidea subterranea.


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1 - Harvard University, Farlow Herbarium and Department of Organismic and Evolutionary Biology, 22 Divinity Avenue, Cambridge, Massachusetts, 02138, USA
2 - Iowa State University, Department of Botany and Bessey Microscopy Facility, Ames, Iowa, 50011, USA

Keywords:
Otidea
Ectomycorrhizae
Pezizales
truffles
hypogeous fungi.

Presentation Type: Poster:Posters for Topics
Session: P2
Location: Event Tent/Cliff Lodge
Date: Tuesday, July 28th, 2009
Time: 5:30 PM
Number: P2SE014
Abstract ID:197


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