Abstract Detail

Systematics

McKenzie, Patrick [1], Eaton, Deren [2].

Phylogenetics of Monarda subg.Monarda, a clade of North American mints.

Monarda (Lamiaceae), a genus of flowering plants endemic to North America, is characterized by diverse floral and inflorescence morphologies, pollination regimes, and chemical expression profiles. It is composed of two subgenera: Monarda subg. Monarda and Monarda subg. Cheilyctis. The precise number of species in each Monarda subgenus varies considerably across taxonomic treatments, reflecting differences in recognizing many subspecies and varieties. Taxonomic confusion in Monarda is further confounded by evidence of hybridization and hybrid species origin, as with M. x media. In other cases, species exhibit spatially structured morphological and phenological variation that has yet to be formally described but that indicates the likely existence of cryptic species.Previous molecular systematics research in Monarda has established monophyly of the subgenera but has not resolved species-level relationships or sampled the subgenera thoroughly. We resolved these shallow relationships by sequencing 3RAD libraries that were prepared from multiple individuals of 20 species and subspecies in Monarda subg. Monarda. From thousands of genome-wide loci, we used species tree and species network inference methods to resolve phylogeny and demographic history of the subgenus. In addition to these results, we consider the taxonomic implications of our work.

1 - 3601 Irwin Ave, Apt 4A, Bronx, NY, 10463, United States
2 - Columbia University, Ecology, Evolution, And Environmental Biology, 1200 Amsterdam Ave. , Schermerhorn Ext. Office 1007, New York, NY, 10027, United States

Keywords:
systematics
phylogenomics
hybridization.

Presentation Type: Oral Paper
Number: SYST III004
Abstract ID:871
Candidate for Awards:None