Bryological and Lichenological Section/ABLS
Budke, Jessica M. , Goffinet, Bernard .
Phylogenetic analyses of Timmiaceae (Bryophyta: Musci) inferred from nuclear and chloroplast sequence data.
TAXONOMIC concepts in the Timmiaceae were most recently revised by Brassard in the 1980s. Based on morphological characters, this monogeneric family was divided into three sections and four species, two containing intraspecific taxa. These morphologically based taxonomic concepts were tested against a criterion of monophyly using variation in nucleotide sequences of three regions: one nuclear (26S) and two chloroplast (trnL-trnF and atpB-rbcL spacer). Regions were sequenced for 29 Timmiaceae exemplars and five outgroup taxa and examined using parsimony and Bayesian inference. Our analyses support the monophyly of the three sections and two of the established species. However Timmia sibirica and T. norvegica, as currently defined, were polyphyletic. Thus the morphological characteristics employed to define these species did not represent monophyletic units. Within Timmiaceae we recognized four species: Timmia austriaca, T. bavarica, T. megapolitana s.s., and T. norvegica s.l. All of the supported species represent morphologically diagnosable and monophyletic groups.[c.e.:srb]
Log in to add this item to your schedule
1 - University of Connecticut, Ecology & Evolutionary Biology, 75 North Eagleville Road, U-3043, Storrs, Connecticut, 062693043, USA
Presentation Type: Oral Paper:Papers for Sections
Date: Wednesday, August 2nd, 2006
Time: 11:15 AM