The Morphological and Phylogenetic Distinctions of <i>Coursetia greenmanii</i> (Leguminosae): Taxonomic and Ecological Implications

Stéfano, Rodrigo Duno de; Carnevali, Germán; Can-Itza, Lilia Lorena; Lavin, Matt

doi:10.1600/036364410791638360

Cited by 18 publications

(22 citation statements)

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“…-The results presented here illustrate the use of densely sampled gene trees, in combination with traditional morphology-based taxonomy, as a valuable approach in discovering new and often cryptic taxa for large and morphologically complex genera like Mimosa. The value of this approach, where multiple accessions per species are sequenced and analysed, has also been demonstrated by other recent studies (Queiroz & Lavin, in press;Duno de Stefano & al., 2010;Pennington & al., 2010 and in press). These studies highlight the need for dense sampling in species-level phylogenetic studies in plants in order to fully explore the depth of sequence divergence.…”

Section: Discussionmentioning

confidence: 61%

“…sandemannii, are represented by single sequences in the plastid gene tree, and more accessions are needed to test the monophyly of these taxa. The need for dense sampling within species has been highlighted by other recent studies (e.g., Sotuyo & al., 2007;Queiroz & Lavin, in press;Duno de Stefano & al., 2010). A biparentally inherited nuclear gene tree would also be valuable to look for evidence of potential reticulation.…”

Section: Discussionmentioning

confidence: 99%

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Underestimated endemic species diversity in the dry inter‐Andean valley of the Río Marañón, northern Peru: An example from Mimosa (Leguminosae, Mimosoideae)

Särkinen

Marcelo-Peña

Daza

et al. 2011

TAXON

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Molecular phylogenies which include multiple accessions of species and near complete taxon sampling can be an important tool for estimating species diversity when used in combination with traditional morphology‐based taxonomy. Here we use a densely sampled plastid gene tree for a morphologically complex group within the legume genus Mimosa (sect. Batocaulon ser. Andinae) to improve estimates of species limits and diversity in the poorly known dry inter‐Andean valley of the Río Marañón, northern Peru. Based on the plastid gene tree, Mimosa ser. Andinae, which previously comprised four species, is re‐circumscribed to include six Andean dry‐forest species from northern Peru, Ecuador and southern Colombia, including the new species, M. jaenensis, described here. A further three candidate species are identified within the section based on high levels of sequence variation among accessions. With the additional species, the Marañón valley is now known to harbour nine narrowly restricted endemic species of Mimosa, a pattern of multiple congeneric endemics mirrored in many other plant genera as well as several animal groups. Our results, in combination with other published studies, suggest that overall species diversity in the Marañón has been significantly under‐estimated. Further work is needed to identify conservation priority areas in the Marañón in order to protect its unique flora.

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Section: Discussionmentioning

confidence: 61%

Section: Discussionmentioning

confidence: 99%

Underestimated endemic species diversity in the dry inter‐Andean valley of the Río Marañón, northern Peru: An example from Mimosa (Leguminosae, Mimosoideae)

Särkinen

Marcelo-Peña

Daza

et al. 2011

TAXON

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“…The discovery of overlooked species diversity prompted by densely sampled (complete or near‐complete taxon sampling and multiple accessions of species) molecular phylogenetic analyses that reveal robustly supported reciprocally monophyletic clades that coincide with other evidence from geography, ecology, and morphology is increasingly common. Taking examples of legumes from neotropical seasonally dry tropical forests, recent novelties delimited in similar ways include Caesalpinia oyame (Sotuyo et al, 2007; Sotuyo and Lewis, 2007), Mimosa jaenensis (Särkinen et al, 2011), Coursetia greenmanii (de Stefano et al, 2010), Coursetia caatingicola (de Quieroz and Lavin, 2011), and Poissonia eriantha (Pennington et al, 2011). This steady addition of new species across different genera suggests that species diversity of neotropical seasonally dry forests may have been significantly underestimated.…”

Section: Discussionmentioning

confidence: 99%

Phylogenetic and population genetic analyses of diploid Leucaena (Leguminosae; Mimosoideae) reveal cryptic species diversity and patterns of divergent allopatric speciation

Govindarajulu

Hughes

Bailey

2011

American J of Botany

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Findings from this study highlight the importance and utility of multilocus data in the recovery of complex evolutionary histories. The results are consistent with allopatric divergence representing the predominant mode of speciation among diploid Leucaena. These findings contrast with the potential hybrid origin of several tetraploid species and highlight the importance of human translocation of seed to the origin of these tetraploids. The recognition of one previously unrecognized species (L. cruziana) and the elevation of another taxon (L. collinsii subsp. zacapana) to specific status (L. zacapana) is consistent with a growing number of newly diagnosed species from neotropical seasonally dry forests, suggesting these communities harbor greater species diversity than previously recognized.

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“…Similar studies in recent years have revealed several cases of cryptic, undescribed or improperly circumscribed legume species from the Succulent Biome (sensu Schrire & al., 2005, a collection of semi-arid, fire-intolerant, succulent-rich dry tropical forests, thickets and bushlands) based on the coalescence of genetic loci from geographically localized individuals (e.g., Caesalpinia oyamae Sotuyo & G.P. Stefano & al., 2010; and Coursetia caatingicola L.P. Queiroz, Queiroz & Lavin, 2011). In many of these genera similar patterns of robustly supported reciprocally monophyletic species clades subtended by long stem branches are evident, a pattern reflecting the narrowly restricted endemic distributions, but often local abundance of these Succulent Biome woody legumes (Pennington & al., 2010.…”

Section: Version Of Recordmentioning

confidence: 99%

A new cryptic species in a new cryptic genus in the Caesalpinia group (Leguminosae) from the seasonally dry inter‐Andean valleys of South America

Gagnon

Hughes

Lewis

et al. 2015

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The generic affiliation of the Andean species Caesalpinia trichocarpa, C. mimosifolia, and their close relatives has remained uncertain in all recent studies of Caesalpinia s.l. (Leguminosae, subfamily Caesalpinioideae). A new densely sampled phylogeny based on four DNA sequence regions (rps16, trn D‐trnT, ycf6‐ psbM, ITS) strongly supports the monophyly of an Andean clade. We propose that despite the lack of obvious diagnostic morphological synapomorphies, this Andean group should be considered as a distinct genus, here described as the new genus Arquita. Phylogenetic analyses also suggest a problem with species delimitation in this group. Within C. trichocarpa, accessions from disjunct geographic areas in Argentina, Bolivia and Peru each form a robustly supported, unresolved clade that includes C. mimosifolia. The morphological and genetic cohesiveness of the C. trichocarpa complex is investigated using morphometric phenetic analyses of qualitative and quantitative flower and leaf traits, and reconstruction of a densely sampled phylogeny using three plastid and one nuclear ribosomal DNA sequence loci. Our results suggest that the most geographically isolated of these clades, narrowly endemic to two inter‐Andean valleys in central‐north Peru and separated by ∼1350 km, and extensive high Andean cordilleras above 4000 m, from the nearest populations in Bolivia, represents a genetically highly distinct and morphologically cryptic lineage here described as a new species (Arquita grandiflora). A full taxonomic account of the new genus Arquita and its component species is provided, with a distribution map and a key to the species.

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The Morphological and Phylogenetic Distinctions of Coursetia greenmanii (Leguminosae): Taxonomic and Ecological Implications

Cited by 18 publications

References 0 publications

Underestimated endemic species diversity in the dry inter‐Andean valley of the Río Marañón, northern Peru: An example from Mimosa (Leguminosae, Mimosoideae)

Underestimated endemic species diversity in the dry inter‐Andean valley of the Río Marañón, northern Peru: An example from Mimosa (Leguminosae, Mimosoideae)

Phylogenetic and population genetic analyses of diploid Leucaena (Leguminosae; Mimosoideae) reveal cryptic species diversity and patterns of divergent allopatric speciation

A new cryptic species in a new cryptic genus in the Caesalpinia group (Leguminosae) from the seasonally dry inter‐Andean valleys of South America

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