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Abstract Detail

Systematics Section/ASPT

Nelsen, Matthew P. [1], Lucking, Robert [2], Aptroot, Andre [3], Lumbsch, H. Thorsten [1], Ree, Richard [4].

Elucidating phylogenetic relationships and character state evolution in the lichen-forming lineage Trypetheliales (Dothideomycetes, Ascomycota).

Here we present a detailed phylogeny of the primarily lichen-forming fungal order Trypetheliales (Dothideomycetes: Ascomycota). Our data demonstrate that a number of genera in this clade are not monophyletic, instead suggesting that an overemphasis has been placed on certain character state combinations, which do not reflect phylogeny. Patterns of ascospore septation, ostiole orientation and type of ascomatal aggregation appear evolutionarily labile, and are of limited utility for the circumscription of genera. Additionally, we present results examining the evolution and phylogenetic distribution of morphological diversity across this lineage.

Broader Impacts:

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1 - The Field Museum, Department of Botany, 1400 S. Lake Shore Drive, Chicago, IL, 60605, USA
2 - Field Museum of Natural History, Department of Botany, 1400 South Lake Shore Drive, Chicago, IL, 60605-2496, USA
3 - ABL Herbarium, Soest, Netherlands
4 - Field Museum of Natural History, Botany, 1400 S Lake Shore Drive, Chicago, IL, 60605, USA

Morphological evolution.

Presentation Type: Oral Paper:Papers for Sections
Session: 13
Location: Rosedown/Riverside Hilton
Date: Monday, July 29th, 2013
Time: 3:45 PM
Number: 13009
Abstract ID:840
Candidate for Awards:George R. Cooley Award

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