ARCHIBALD, JENNY K.1*, ANDREA D. WOLFE1, and MARK E. MORT2. 1Department of Evolution, Ecology, and Organismal Biology, The Ohio State University, Columbus, Ohio, U.S.A. 43210-1293; 2Department of Ecology and Evolutionary Biology and the Museum of Natural History and Biodiversity Research Center, University of Kansas, Lawrence, KS, U.S.A. 66045-2106. - Preliminary insights into the phylogenetics of Zaluzianskya (Scrophulariaceae, Tribe Manuleae) inferred from multiple DNA data sets.
Zaluzianskya (Scrophulariaceae, Tribe Manuleae)
comprises 54 species of annual or perennial herbs distributed
throughout South Africa and displaying diverse floral morphology.
Preliminary molecular phylogenetic analyses, based on both nuclear and
cpDNA sequences, will be discussed for Zaluzianskya. These
estimates of phylogeny will then be used to investigate the evolution
of floral characteristics within this genus. Although increased taxon
sampling is necessary, several tentative conclusions can be drawn. Two
of the four sections of this genus are clearly not monophyletic:
sections Zaluzianskya and Holomeria. The status of
sections Nycterinia and Macrocalyx is uncertain. Day
flowering is ancestral within Zaluzianskya, with night
flowering evolving at least twice along with at least one reversal to
day flowering.
Key words: character evolution, Scrophulariaceae, South Africa, systematics, Zaluzianskya