01652nas a2200145   4500008004100000245011700041210006900158260000800227300001400235490000800249520113100257100001901388700002301407856007601430       2013                        eng d00aThe South American radiation of Lepechinia (Lamiaceae): phylogenetics, divergence times and evolution of dioecy.0 aSouth American radiation of Lepechinia Lamiaceae phylogenetics d  cDec  a171–1900 v1713 aLepechinia (Lamiaceae) is a diverse and widespread genus that is important in indigenous New World culture. We
present a phylogenetic analysis of 72 accessions representing 31 species of Lepechinia using data from three plastid
(trnL-F, ycf1, ycf1-rps15 spacer) and four nuclear [internal transcribed spacer (ITS), external transcribed spacer
(ETS), granule-bound starch synthase I (GBSS)I, pentatricopeptide repeat region (PPR)-AT3G09060] DNA regions.
Data were analysed using parsimony, maximum likelihood and Bayesian approaches. Divergence time estimation
using BEAST shows Lepechinia had a mid/late Miocene origin, perhaps as a response to global cooling patterns.
Cladogenesis in most South American Lepechinia is shown to have occurred within the past 5 Myr, presumably as
a response to climatic and orogenic events. Dioecy has arisen multiple times in Lepechinia, once in North America
and at least twice in South America, and not necessarily involving gynodioecy as an intermediary step. Dioecy and
gynodioecy are demonstrated to be associated with several floral characters, including flower size, number and
colour.1 aDrew, Bryan, T1 aSystma, Kenneth, J  uhttp://onlinelibrary.wiley.com/doi/10.1111/j.1095-8339.2012.01325.x/pdf01692nas a2200145   4500008004100000245008800041210006900129260000800198300001600206490000700222520116200229100001901391700002301410856011301433       2011                        eng d00aTesting the Monophyly and Placement of Lepechinia in the Tribe Mentheae (Lamiaceae)0 aTesting the Monophyly and Placement of Lepechinia in the Tribe M  cNov  a1038–10490 v363 aLepechinia (Lamiaceae subf. Nepetoideae) is a New World genus composed of about 42 species distributed primarily from Northern California to Central Argentina. Previous morphological and molecular studies on Lepechinia have raised questions on the monophyly of the genus and its placement within the tribe Mentheae. In this paper the phylogenetic placement and monophyly of Lepechinia is examined within the context of the tribe Mentheae using cpDNA (ycf1 and trnL-F) and nrDNA (ITS and ETS) markers. Melissa is shown to be sister to Lepechinia in both cpDNA and nrDNA analyses, and the monotypic genera Chaunostoma and Neoeplingia are found to be embedded within Lepechinia. The subtribe Menthinae is shown to be paraphyletic, with several genera needing to be reassigned. In particular, Neoeplingia should be included within the subtribe Salviinae. The genera Heterolamium and Melissa, both previously unplaced with regard to subtribe, are now clearly assigned to the subtribes Nepetinae and Salviinae, respectively. The cpDNA marker ycf1 has great phylogenetic utility, and is shown to be 50% more informative than trnL-F for the taxa used in this study.1 aDrew, Bryan, T1 aSytsma, Kenneth, J  uhttps://lamiaceae.myspecies.info/content/testing-monophyly-and-placement-lepechinia-tribe-mentheae-lamiaceae