Willdenowia 37 – Article37202

Willdenowia – Annals of the Botanic Garden and Botanical Museum Berlin-Dahlem
ISSN 0511-9618
© 2007 BGBM Berlin-Dahlem.

Anderberg, A. A., Manns, U. & Källersjö, M. 2007: Phylogeny and floral evolution of the Lysimachieae (Ericales, Myrsinaceae): evidence from ndhF sequence data.
Willdenowia 37: 407-421.

Earlier hypotheses of floral evolution in Lysimachia and related genera were tested by phylogenetic analysis of DNA sequences from the plastid gene ndhF. It is concluded that taxa with flowers provided with oil-producing trichomes are not advanced and buzz-pollinated species with anther cone are not ancestral as earlier proposed. Instead, species of Lysimachia with buzz-pollinated flowers belong to one derived clade, species with flowers provided with nectar producing trichomes belong to another, both groups having evolved from yellow flowered oil-producing ancestors. We also show that Lysimachia and most of its subgenera as well as the genera Anagallis, Pelletiera and Asterolinon are paraphyletic or polyphyletic as presently circumscribed, and that Trientalis and a few American species of Lysimachia are the closest relatives of the other species of Lysimachia + Anagallis, Asterolinon, Pelletiera and Glaux. The subgeneric classification and the biogeographical patterns in the group are briefly discussed.

Key words
Anagallis, Asterolinon, Glaux, Lysimachia, Pelletiera, Trientalis, cp DNA, pollination adaptation, parsimony, phylogeny.

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