Phylogenetic placement of Triaenophora together with Rehmannia were explored with DNA sequence data from five regions (rbcL, ndhF, rps16, trnL-F, nr ITS) in two combined data matrices. One (rbcL, ndhF, rps16) represented a wide sampling across most families of Lamiales. The other data matrix represented two DNA regions partly unalignable across Lamiales (trnL-F, nr ITS) plus rps16, which proved to be variable enough to give resolution at a smaller taxonomic level in Lamiales. Triaenophora rupestris and Rehmannia are sister taxa, composing a strongly supported clade, which is sister to all representative genera of Orobanchaceae. Furthermore, Paulowniaceae and Phrymaceae are next to Orobanchaceae and Triaenophora-Rehmannia clade. All of the above taxa are only distantly related to Scrophulariaceae and/or Plantaginaceae (sensu APG II). Mazus and Lancea would be excluded from Phrymaceae. The resulting phylogeny is in agreement with other data such as phytochemistry and provides a framework for further investigation of character evolution in Lamiales.
|Publication status||Published - 2009|
- Scrophulariaceae sensu lato