Sections in Eugenia (Myrteae, Myrtaceae): nomenclatural notes and a key

Mazine, Fiorella Fernanda; Bünger, Mariana de Oliveira; Faria, Jair Eustáquio Quintino; Lucas, Eve; Souza, Vinícius Castro

doi:10.11646/phytotaxa.289.3.2

Cited by 42 publications

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“…and Myrcianthes, nine clades were identified as morphologically diagnosable groups. Eugenia morphology and current phylogenetic and taxonomic understanding of the "Eugenia group" considering recent nomenclatural updates (Bünger & al., 2016a;Mazine & al., 2016;Giaretta & al., unpub. data) are summarised below.…”

Section: Introductionmentioning

confidence: 99%

“…(unpub. data) (Mattos, 1995;Landrum & Kawasaki, 1997;Sobral, 2003;Cruz & al., 2013;Mazine & al., 2016). Eugenia sect.…”

Section: Introductionmentioning

confidence: 99%

“…This study aims to better delimit E. sect. Umbellatae (sensu Mazine & al., 2016), to understand the relationships between clade 9 (sensu Mazine & al., 2014) with the remaining Eugenia clades and to identify and understand relationships between manageable subgroups of this large clade for future discrete systematic studies. A more extensive sampling of Eugenia species from Africa and Asia has been included here with the aim of better understanding the biogeographic events that produced the current pantropical distribution patterns observed within Eugenia.…”

Section: Introductionmentioning

confidence: 99%

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Phylogeny and biogeography of the hyper–diverse genus Eugenia (Myrtaceae: Myrteae), with emphasis on E. sect. Umbellatae, the most unmanageable clade

Mazine

Faria

Giaretta

et al. 2018

TAXON

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Eugenia, comprising ca. 1100 species, is the largest genus of Neotropical Myrtaceae. Eugenia sect. Umbellatae (formerly referred to as “clade 9”) is the most speciose lineage of Eugenia. This study aims to better delimit E. sect. Umbellatae, to identify and understand relationships between manageable subgroups of this large clade for future discrete systematic studies and to explain biogeographical patterns in the genus. In total, 103 samples were used in this study. These include representatives of the nine clades of the “Eugenia group” with a particular focus on Eugenia clade 9, representing the morphological and geographical diversity found in the genus. Phylogenetic reconstructions were performed using maximum likelihood (ML) and Bayesian inference (BI) for the combined dataset, using the markers ITS, rpl16, psbA–trnH, rpl32–trnL, trnQ–rps16. The resultant tree was fossil calibrated and used for historical biogeographical analysis using DEC implemented in RASP. The mid Oligocene is the most likely period in which the crown node of Eugenia s.l. diversified. The earliest Eugenia appear to be associated with dry biomes and to have arisen from non–tropical southern South America, as did ancestors of the earliest American Myrteae. Eugenia subg. Pseudeugenia also most likely diversified in dry biomes, while E. subg. Hexachlamys and E. subg. Eugenia are likely to have diverged in the Atlantic Forests biome. Eugenia sect. Umbellatae is morphologically very variable; some clades can be circumscribed based on morphology while some remain morphologically undiagnosable. The study presented here provides discussion of the earliest origins of Eugenia and its response to climate–driven changes in the Neotropics as humid, forest biomes became more widespread in the Miocene. In addition, important practical conclusions are drawn regarding relationships within Eugenia. Three clades are newly classified as subgenera: E. subg. Pseudeugenia (including species of E. sect. Pseudeugenia); E. subg. Hexachlamys (including E. sect. Hexachlamys) and E. subg. Eugenia (including E. sect. Umbellatae,E. sect. Jossinia,E. sect. Phyllocalyx,E. sect. Pilothecium,E. sect. Racemosae,E. sect. Schizocalomyrtus, E. sect. Speciosae and Eugenia sect. Excelsae). Two previously unidentified clades are published as E. sect. Excelsae and recognized as E. sect. Jossinia, the latter consisting entirely of Old World species.

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Section: Introductionmentioning

confidence: 99%

“…(unpub. data) (Mattos, 1995;Landrum & Kawasaki, 1997;Sobral, 2003;Cruz & al., 2013;Mazine & al., 2016). Eugenia sect.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Phylogeny and biogeography of the hyper–diverse genus Eugenia (Myrtaceae: Myrteae), with emphasis on E. sect. Umbellatae, the most unmanageable clade

Mazine

Faria

Giaretta

et al. 2018

TAXON

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“…Assim, as nove seções reconhecidas em Eugenia por Mazine et al (2016) são: Eugenia sect. Pseudeugenia Mazine & Faria (20 espécies), E. sect.…”

Section: O Gênero Eugenia Lunclassified

“…Berg (c. 680 espécies). Dentre as principais características diagnósticas apontadas por Mazine et al (2016) na chave apresentada para os grupos infragenéricos estão: o tipo de inflorescência, tamanho e persistência das bractéolas, número de lobos do cálice, presença ou não de indumento nos lóculos do ovário, tamanho e coloração dos frutos e grau de fusão dos cotilédones.…”

Section: O Gênero Eugenia Lunclassified

Estudo taxonômico das espécies de <em>Eugenia</em> L. (Myrtaceae) da Reserva Natural Vale - Linhares, ES

Valdemarin¹

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Identifying fossil Myrtaceae leaves: the first described fossils of Syzygium from Australia

Tarran

Wilson

Paull

et al. 2018

American J of Botany

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Although leaves of Myrtaceae are easily identified to family level, very few studies have convincingly identified fossil Myrtaceae leaves to living genera. We used a broadly comparative approach with a large data set of extant taxa to confidently assign the mummified remains of myrtaceous leaves from early Miocene sediments at Kiandra (New South Wales, Australia) to a living genus. METHODS: Fossils were identified using a nearest living relative approach, against a database of 232 extant broadleaf rainforest species of Myrtaceae. Leaf cuticles were prepared from 106 species, sourced from herbarium specimens as well as some living individuals, and a further 127 records were assembled from the literature. A set of simple but phylogenetically informative cuticular characters were observed, described, and recorded under both scanning electron microscopy and standard light microscopy. KEY RESULTS: A new fossil species of Syzygium Gaertn. is described from mummified remains found in early Miocene (21.5-21.7 Ma) sediments. The fossil taxon is here named Syzygium christophelii sp. nov., in honor of the late Australian paleobotanist David Christophel. CONCLUSIONS: These fossils represent some of the most confidently described Myrtaceae leaf fossils published to date and are the first and oldest described fossil record of Syzygium from Australia. While several fossil parataxa have been illustrated from New Zealand, and several fossil species of Syzygium have previously been proposed in the literature, many of these fossils lack characters for a confident diagnosis.

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Sections in Eugenia (Myrteae, Myrtaceae): nomenclatural notes and a key

Cited by 42 publications

References 0 publications

Phylogeny and biogeography of the hyper–diverse genus Eugenia (Myrtaceae: Myrteae), with emphasis on E. sect. Umbellatae, the most unmanageable clade

Phylogeny and biogeography of the hyper–diverse genus Eugenia (Myrtaceae: Myrteae), with emphasis on E. sect. Umbellatae, the most unmanageable clade

Estudo taxonômico das espécies de <em>Eugenia</em> L. (Myrtaceae) da Reserva Natural Vale - Linhares, ES

Identifying fossil Myrtaceae leaves: the first described fossils of Syzygium from Australia

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