Mycologia
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DOI: 10.3852/mycologia.97.5.1140
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Mycologia, 97(5), 2005, pp. 1140-1151.
© 2005 by The Mycological Society of America

A new poroid species of Resupinatus from Puerto Rico, with a reassessment of the cyphelloid genus Stigmatolemma


R. Greg Thorn 1

     Department of Biology, University of Western Ontario, London, Ontario, N6A 5B7 Canada

Jean-Marc Moncalvo

     Centre for Biodiversity and Conservation Biology, Royal Ontario Museum and Department of Botany, University of Toronto, Toronto, Ontario, M5S 2C6 Canada

Scott A. Redhead

     Systematic Mycology and Botany Section, Eastern Cereal and Oilseed Research, Agriculture and Agri-Food Canada, Ottawa, Ontario, K1A 0C6 Canada

D. Jean Lodge 2

     Center for Forest Mycology Research, USDA Forest Service-FPL, P.O. Box 1377, Luquillo, Puerto Rico, USA 00773-1377

María P. Martín

     Real Jardín Botánico, CSIC, Plaza de Murillo 2, 28014 Madrid, Spain

A fungus with gelatinous poroid fruiting bodies was found in Puerto Rico and determined by macro- and micromorphology to be most similar to members of the lamellate agaric genus Resupinatus. This species is described as a new species, Resupinatus porosus. Phylogenetic analyses of ribosomal DNA sequences support the inclusion of this fungus in the clade containing Resupinatus, and indicate that this monophyletic group also includes members of Asterotus and the cyphelloid genus Stigmatolemma. Resupinatus porosus is another example of tropical poroid representatives of lamellate agaric genera. Resupinatus is emended to include species with poroid (R. porosus) or merulioid (R. merulioides) hymenophore as well as those with laterally stipitate (Asterotus) or cyphelloid (Stigmatolemma) fruiting bodies. Seven new combinations in Resupinatus are proposed to accommodate well-known species of Stigmatolemma.

Key words: Agarics, Henningsomyces, hymenophore evolution, phylogeny, Porotheleum, rDNA, tropical fungi

1 Corresponding author. E-mail: rgthorn{at}uwo.ca






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Copyright © 2005 by The Mycological Society of America.