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2019
Journal article
Calyx (con)fusion in a hyper-diverse genus: Parallel evolution of unusual flower patterns in Eugenia (Myrtaceae)
Eugenia has a pantropical distribution and comprises ca. 1000 species found mostly in the Neotropics. Recent DNA based phylogenies show that unusual flower morphology of ‘eugenioid’ collections, e.g. fused calices that open by tearing, consistently emerged within Eugenia. These results emphasize a demand to revaluate flower morphology in a phylogenetic...Giaretta, Augusto ; Vasconcelos, Thais ; Mazine, Fiorella Fernanda ; Faria, Jair Eustáquio Quintino ; Flores, Rodolfo …
Genetics, Molecular Biology, and Ecology, Evolution, Behavior and Systematics
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2019
Journal article
Convergent evolution in calyptrate flowers of Syzygieae (Myrtaceae)
Abstract Shedding a fused perianth as a calyptra at anthesis is a trait that has evolved independently multiple times in angiosperm evolutionary history. However, calyptras do not correspond to homologous structures in all cases. Here, we describe calyptra development in the evolutionary context of Myrtaceae tribe Syzygieae. We use scanning...Vasconcelos, Thais N C ; Lucas, Eve J ; Conejero, Maria ; Giaretta, Augusto ; Prenner, Gerhard
Plant Science and Ecology, Evolution, Behavior and Systematics
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2021
Journal article
Taxonomic monograph of Eugenia sect. Schizocalomyrtus (Myrtaceae: Myrteae), a group within Eugenia with unusual flowers.
Taxonomic monograph of Eugenia sect. Schizocalomyrtus, supported by molecular and morphological evidence, is presented. The flowers of this section have unusual fused calyces that are contrasted with standard Eugenia flowers with free calyx lobes. Because the fused calyx recurs in Myrtaceae and has been historically misleading for taxonomists, a key...Giaretta, Augusto ; Lucas, Eve ; Sano, Paulo Takeo
Homoplasy, Myrtaceae, Eugenia, Calycorectes, Systematics, Taxonomy, Eudicots, and Neotropics
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2022
Journal article
Phylogenetic Relationships Within the Hyper-Diverse Genus Eugenia (Myrtaceae: Myrteae) Based on Target Enrichment Sequencing.
is one of the most taxonomically challenging lineages of flowering plants, in which morphological delimitation has changed over the last few years resulting from recent phylogenetic study based on molecular data. Efforts, until now, have been limited to Sanger sequencing of mostly plastid markers. These phylogenetic studies indicate 11 clades...Giaretta, Augusto ; Murphy, Bruce ; Maurin, Olivier ; Mazine, Fiorella F. ; Sano, Paulo …
Target sequence capture, Myrtaceae, Eugenia, Phylogenomics, Hyb-Seq, and High-throughput sequencing
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2022
Journal article
A tribute to resistance: Eugenia quilombola (Myrtaceae), a new species with multilocular anthers from the Atlantic Forest of northeastern Brazil.
Eugenia quilombola, a new species restricted to the northern portion of the Atlantic Forest is here described. Its sheets were previously misidentified as Eugenia umbrosa and this misquoting name have been used in scientific collections and publications until now. After 10 years of studies and discussions about its identity, Eugenia... -
2024
Journal article
Polysporangiate anthers described in Eugenia (Myrtaceae) with notes on evolutionary patterns.
Shifts towards compartmentalisation resulting in multilocular anthers have been described in some families of Myrtales but to date, not in Myrtaceae. In these other families sporogeneous tissue is partitioned by transverse or longitudinal septa, fitting the definition of the ‘polysporangiate anther’. Polysporangiate anther in Eugenia, a Neotropical genus of Myrtaceae...