Towards a new classification of tribe Stachydeae (Lamiaceae): naming clades using molecular evidence

AbstractStachydeae, comprising c. 470 species, are one of the most diverse and taxonomically puzzling groups in Lamioideae. In the present study, the phylogenetic relationships in the Eurystachys clade (a phylogenetic name for all genera attributed to Stachydeae except Melittis) were reconstructed utilizing nuclear ribosomal DNA sequences (nrETS, 5S-NTS) from 148 accessions in 12 genera. Our phylogenetic results recovered Stachys as paraphyletic with numerous traditionally recognized genera nested in it. A broadly defined Eurystachys clade, however, was monophyletic. Unlike previous studies, the present study was able to resolve the group into 12 well-supported clades, named here as (1) Eriostomum, (2) Stachys, (3) Prasium, (4) Setifolia, (5) Distantes, (6) Burgsdorfia, (7) Hesiodia, (8) Empedoclia, (9) Sideritis, (10) Marrubiastrum, (11) Swainsoniana and (12) Olisia. These 12 clades were formally named in a phylogenetic nomenclature for the Eurystachys clade. Several infrageneric units were retrieved as monophyletic, namely Sideritis sections Burgsdorfia, Empedoclia and Hesiodia, Sideritis subgenus Marrubiastrum and Stachys sections Eriostomum (including Stachys section Mucronata) and Setifolia. The findings of this study also provide the basis for a future formal classification, with two options: (1) splitting of the Eurystachys clade into 12 monophyletic genera, all of them based on pre-existing genus names and redefined to encompass additional taxa, but without clear morphological apomorphies; or (2) lumping of all segregates into a broadly defined Stachys, including widely recognized and well-defined segregates such as Prasium and Sideritis.

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Phylogenetic relationships and infrageneric classification of Astragalus tragacantha L. (Fabaceae), inferred from nuclear ribosomal DNA Internal transcribed spacers data (nrDNA ITS)

Ecologia mediterranea ◽

10.3406/ecmed.2010.1379 ◽

2010 ◽

Vol 36 (1) ◽

pp. 99-106 ◽

Cited By ~ 7

Author(s):

Laurent Hardion ◽

Alex Baumel ◽

Pierre-Jean Dumas ◽

Nathalie Duong ◽

Laurence Affre ◽

...

Keyword(s):

Ribosomal Dna ◽

Phylogenetic Relationships ◽

Internal Transcribed Spacers ◽

Nuclear Ribosomal Dna ◽

Nrdna Its ◽

Infrageneric Classification

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Phylogeny, major clades and infrageneric classification of Corymbia (Myrtaceae), based on nuclear ribosomal DNA and morphology

Australian Systematic Botany ◽

10.1071/sb09028 ◽

2009 ◽

Vol 22 (5) ◽

pp. 384 ◽

Cited By ~ 32

Author(s):

Carlos Parra-O. ◽

Michael J. Bayly ◽

Andrew Drinnan ◽

Frank Udovicic ◽

Pauline Ladiges

Keyword(s):

Ribosomal Dna ◽

Convergent Evolution ◽

Morphological Characters ◽

Molecular Data ◽

Nuclear Ribosomal Dna ◽

Molecular Evidence ◽

Nuclear Rdna ◽

Infrageneric Classification ◽

Taxonomic Categories

Phylogenetic relationships of sections and species within Corymbia (Myrtaceae), the bloodwood eucalypts, were evaluated by using combined analyses of nuclear rDNA (ETS + ITS) and morphological characters. Combining morphological characters with molecular data provided resolution of relationships within Corymbia. The analyses supported the monophyly of the genus and recognition of the following two major clades, treated here as new subgenera: subgenus Corymbia, including informal sections recognised by Hill and Johnson (1995), namely Rufaria (red bloodwoods), Apteria and Fundoria; and subgenus Blakella, including sections Politaria (spotted gums), Cadagaria, Blakearia (paper-fruited bloodwoods or ghost gums) and Ochraria (yellow bloodwoods). Hill and Johnson’s section Rufaria is monophyletic if Apteria and Fundoria are included. It is evident that, among the red bloodwoods, series are not monophyletic and several morphological characters result from convergent evolution. There was strong morphological and molecular evidence that the three species of red bloodwoods that occur in south-western Western Australia (series Gummiferae: C. calophylla and C. haematoxylon, and series Ficifoliae: C. ficifolia) form a monophyletic group, separate from the eastern C. gummifera (series Gummiferae), which is probably sister to the clade of all other red bloodwoods. Phylogenetic results supported recognition of new taxonomic categories within Corymbia, and these are formalised here.

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Corrigendum to: Phylogeny, major clades and infrageneric classification of Corymbia (Myrtaceae), based on nuclear ribosomal DNA and morphology

Australian Systematic Botany ◽

10.1071/sb09028_co ◽

2010 ◽

Vol 23 (2) ◽

Author(s):

Carlos Parra-O. ◽

Michael J. Bayly ◽

Andrew Drinnan ◽

Frank Udovicic ◽

Pauline Ladiges

Keyword(s):

Ribosomal Dna ◽

Convergent Evolution ◽

Morphological Characters ◽

Molecular Data ◽

Nuclear Ribosomal Dna ◽

Molecular Evidence ◽

Nuclear Rdna ◽

Infrageneric Classification ◽

Taxonomic Categories

Phylogenetic relationships of sections and species within Corymbia (Myrtaceae), the bloodwood eucalypts, were evaluated by using combined analyses of nuclear rDNA (ETS + ITS) and morphological characters. Combining morphological characters with molecular data provided resolution of relationships within Corymbia. The analyses supported the monophyly of the genus and recognition of the following two major clades, treated here as new subgenera: subgenus Corymbia, including informal sections recognised by Hill and Johnson (1995), namely Rufaria (red bloodwoods), Apteria and Fundoria; and subgenus Blakella, including sections Politaria (spotted gums), Cadagaria, Blakearia (paper-fruited bloodwoods or ghost gums) and Ochraria (yellow bloodwoods). Hill and Johnson's section Rufaria is monophyletic if Apteria and Fundoria are included. It is evident that, among the red bloodwoods, series are not monophyletic and several morphological characters result from convergent evolution. There was strong morphological and molecular evidence that the three species of red bloodwoods that occur in south-western Western Australia (series Gummiferae: C. calophylla and C. haematoxylon, and series Ficifoliae: C. ficifolia) form a monophyletic group, separate from the eastern C. gummifera (series Gummiferae), which is probably sister to the clade of all other red bloodwoods. Phylogenetic results supported recognition of new taxonomic categories within Corymbia, and these are formalised here.

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A new infrageneric classification for Amorimia (Malpighiaceae) based on morphological, phytochemical and molecular evidence

Phytotaxa ◽

10.11646/phytotaxa.313.3.1 ◽

2017 ◽

Vol 313 (3) ◽

pp. 231 ◽

Cited By ~ 5

Author(s):

RAFAEL FELIPE DE ALMEIDA ◽

ANDRÉ MÁRCIO AMORIM ◽

ANGELA MARIA DA SILVA CORRÊA ◽

CÁSSIO VAN DEN BERG

Keyword(s):

Ribosomal Dna ◽

Bayesian Methods ◽

Phylogenetic Relationships ◽

Plastid Dna ◽

Nuclear Ribosomal Dna ◽

Molecular Evidence ◽

Infrageneric Classification

Phylogenetic relationships for 14 of the 15 species of Amorimia (Malpighiaceae) were inferred based on ndhF plastid DNA and ETS nuclear ribosomal DNA using both parsimony and Bayesian methods. Our results show that: (1) the monophyly of the genus is corroborated with the new circumscription of the A. rigida complex; (2) several morphological and phytochemical characters support Amorimia and its two main clades; and (3) these clades can be proposed as new subgenera in Amorimia.

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