01640nas a2200133   4500008004100000245006700041210006500108260000800173300001400181490000800195520118600203100001401389856010301403       2010                        eng d00aPericarp structure and phylogeny of tribe Mentheae (Lamiaceae)0 aPericarp structure and phylogeny of tribe Mentheae Lamiaceae  cMar  a165–1750 v2853 aPericarp structure is investigated in 143 speci- mens belonging to 59 out of ca. 65 genera and 134 out of ca. 2,000 species of Lamiaceae subfamily Nepetoideae tribe Mentheae. Some of the data presented by earlier authors are believed to be incorrect. The variation in pericarp structure has been found to be strongly correlated to the variations in DNA and gross morphological characters. The groups of two-sta- minate genera (Salvia, etc.) and four-staminate genera of Salviinae (Lepechinia and Chaunostoma) can be distin- guished from each other and from other labiates by differences in pericarp structure. The other two subtribes, Menthinae and Nepetinae, differ considerably, but their variations strongly overlap. The differences in pericarp structure also suggest that Menthinae can be divided into three main monophyletic groups based on other data: (1) the main bulk of the tribe, (2) a group of Prunella and Cleonia and perhaps also Horminum, and (3) the characteristic genus Lycopus. Pericarp data dis- agree with a suggestion that the genus Melissa should be included in the subtribe Salviinae. Modifications of the sub- tribal classification of Mentheae are discussed.1 aRyding, O  uhttps://lamiaceae.myspecies.info/content/pericarp-structure-and-phylogeny-tribe-mentheae-lamiaceae02449nas a2200349   4500008004100000245009200041210006900133260000800202300001200210490000800222520139200230653001401622653004501636653001301681653001401694653002601708653002501734653002601759653001401785653002201799653001601821653000901837653001701846653001301863653003301876653001001909100001601919700001501935700001301950700001801963856011801981       1999                        eng d00aUtility of rDNA ITS sequences in the systematics of Teucrium section Polium (Lamiaceae)0 aUtility of rDNA ITS sequences in the systematics of Teucrium sec  cJan  a49–700 v2153 aA phylogenetic study based on sequence data from the complete internal transcribed spacer region (ITS) of nuclear ribosomal DNA for sect. Polium of the genus Teucrium shows both intersectional congruence and intrasectional incongruence with traditional morphological classifications. We attribute this incongruence largely to problems related to the polyploid complex studied. Section Polium includes many poorly differentiated taxa of probable recent origin through hybridization followed by polyploidization. Both on the basis of parsimony and distance (Neighbor-Joining method) analyses, T. dunense and T. thymifolium are the species that diverge most from the sampled taxa. However, unlike T. thymifolium, the morphology of ir: dunense is not much differentiated in relation to the other taxa. Both species are, nonetheless, the only sampled species to occupy isolated, exclusive environments and which may have undergone rapid evolution by a bottleneck effect. Teucrium dunense is found only on dunes along the Spanish and French coasts and ir: thymifolium, a chasmophytic species with limited endemism, is found solely on limestone and dolomite cliffs in the low mountains in south-eastern Spain. A hypothesis is presented to explain the discrepancy between the observed comparatively large amount of ITS sequence divergence and the low morphological differentiation in T. dunense.10aEvolution10aInternal Transcribed Spacer Region (Its)10aLabiatae10aLamiaceae10aNuclear Ribosomal Dna10aNucleotide-Sequences10aPhylogenetic Analysis10aPhylogeny10aPolyploid Complex10aPopulations10aRbcl10aSect. Polium10aTeucrium10aTranscribed Spacer Sequences10aTrees1 aOualidi, El1 aVerneau, O1 aPuech, S1 aDubuisson, JY  uhttps://lamiaceae.myspecies.info/content/utility-rdna-its-sequences-systematics-teucrium-section-polium-lamiaceae