Novelties in Brazilian Tradescantia L. (Commelinaceae)

Pellegrini, Marco Octávio de Oliveira; Forzza, Rafaela Campostrini; Sakuragui, Cássia Mônica

doi:10.3897/phytokeys.80.12232

Cited by 11 publications

(7 citation statements)

References 28 publications

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“…12L), but some exceptions can be observed in some species and/or populations where anther morphology seems to be reminiscent of T. subg. Austrotradescantia, with rhomboid connectives and elliptic anther sacs. As expressed by Pellegrini et al (2017), T. subg. Mandonia is a poorly understood group with species of complex delimitation, which is highlighted by the herein presented results by the poorly resolved relationship between its species. This could be easily explained by the great vegetative plasticity within species, conserved reproductive features, and lack of focused field and taxonomic studies for this subgenus.…”

Section: Taxonomymentioning

confidence: 78%

“…In addition, T. cerinthoides and T. crassula (the two lowland species) possess a rather wide distribution range which overlaps with the narrowly distributed T. seubertiana and T. valida (both of them restricted to high elevation sites). Much vegetative variation is recorded for the two widely distributed species, but reproductive characters are key in differentiating species in this group (Pellegrini et al 2017). Thus, I suggest the T. crassula group to be targeted for phylogeographic and reproductive studies to improve and deepen the understanding of taxonomic boundaries between these taxa.…”

Section: Taxonomymentioning

confidence: 99%

“…This could be easily explained by the great vegetative plasticity within species, conserved reproductive features, and lack of focused field and taxonomic studies for this subgenus. Currently, species identification greatly relies on the species allopatric distributions, with little morphological differentiation (Pellegrini et al 2017). Further studies are surely necessary in order to better understand specific boundaries in the subgenus, and its biogeographical history.…”

Section: Taxonomymentioning

confidence: 99%

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Morphological phylogeny of Tradescantia L. (Commelinaceae) sheds light on a new infrageneric classification for the genus and novelties on the systematics of subtribe Tradescantiinae

Pellegrini¹

2017

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Throughout the years, three infrageneric classifications were proposed for Tradescantia along with several informal groups and species complexes. The current infrageneric classification accepts 12 sections – with T. sect. Tradescantia being further divided into four series – and assimilates many concepts adopted by previous authors. Recent molecular-based phylogenetic studies indicate that the currently accepted sections might not represent monophyletic groups within Tradescantia. Based on newly gathered morphological data on the group, complemented with available micromorphological, cytological and phytochemical data, I present the first morphology-based evolutionary hypothesis for Tradescantia. Furthermore, I reduce subtribe Thyrsantheminae to a synonym of subtribe Tradescantiinae, and propose a new infrageneric classification for Tradescantia, based on the total evidence of the present morphological phylogeny, in accordance to the previously published molecular data.

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Section: Taxonomymentioning

confidence: 78%

Section: Taxonomymentioning

confidence: 99%

Section: Taxonomymentioning

confidence: 99%

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Morphological phylogeny of Tradescantia L. (Commelinaceae) sheds light on a new infrageneric classification for the genus and novelties on the systematics of subtribe Tradescantiinae

Pellegrini¹

2017

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“…Recent studies have updated the occurrence of some of the species recorded here for Mato Grosso do Sul such as Tradescantia boliviana (Hassk.) J.R.Grant (Pellegrini et al 2017), Deuterohconia meziana Kuntze ex Mez (Schutz 2014), Dyckia excelsa Leme (Paggi et al 2015) and Tarenaya eosina (J.F.Macbr.) Soares Neto & Roalson, a species considered endemic to Paraguay (Costa-e- , Soares-Neto et al 2018.…”

Section: Discussionmentioning

confidence: 99%

Checklist of the flora in ironstone outcrops at the Urucum Plateau, Corumbá, Mato Grosso do Sul

et al. 2019

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"Cangas" are ironstone outcrops occurring at the foot of the Urucum Plateau, on the western edge of Pantanal, Corumbá-MS. In Brazil, the knowledge about flora and ecology of the plant communities associated with these formations is still incipient. These habitats are among the most threatened and less studied in Brazil because of their association with high quality iron ore deposits. We present a cheklist of the flora from these formations, resulting from different authors' collecting efforts in 10 areas of the Plateau. A total of 302 species have been recorded; they were distributed in 53 botanical families and 175 genera. Poaceae (43 species), Fabaceae (41), Euphorbiaceae (22), Cyperaceae (19), Malvaceae (19), Convolvulaceae (15), Malpighiaceae (13) and Apocynaceae (11) accounted for 60.6% of the species richness. Our data add 59 new occurrences of species of angiosperms to the ironstone outcrops flora in the Urucum Plateau. Among these, 27 species had no occurrence record for Mato Grosso do Sul and three species had not yet been recorded for Brazil. The high diversity and presence of endemic, rare, endangered and/or not yet cataloged species for the Urucum Plateau region, reinforces the need for local conservation units that can guarantee the preservation of these species, since the existing environmental protection areas are insufficient to guarantee the maintenance of typical species from this habitat in the region.

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“…In their recently published article, Pellegrini et al (2017) (hereafter: PFS) claim to make corrections to the typification of Tradescantia crassula Link & Otto (Commelinaceae) done by Funez et al (2016) (hereafter: FHF). The objectives of this note is to present evidence that PFS’s alleged “correction” is erroneous, and to clarify misconceptions concerning the epitype of T. crassula , the specimen B-100521014, which was collected by Friedrich Sello in southern Brazil, and is not original material for T. crassula .…”

Section: Introductionmentioning

confidence: 99%