Venation Patterns in Mimosa subseries Dolentes and Brevipedes (Leguminosae) and their Taxonomical Inferences

Grohar, Mariana Cecilia; Rosenfeldt, Sonia; Morales, Matías

doi:10.1600/036364418x697256

Cited by 7 publications

(3 citation statements)

References 20 publications

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“…The conspicuous and prominent marginal vein is a diagnostic character of this species, which was mentioned by . A morphologically similar marginal vein also has been observed in other taxa of Cassiinae: Although the leaflet venation pattern has been little used in taxonomic studies of Leguminosae, it proved to be useful in Mimosa (Grohar et al 2018), Crotalaria (Devecchi et al 2014), Bauhinia (Fortunato et al 2017) and Chamaecrista (Coutinho et al 2016). In this perspective, the high resolution X-ray digital images of leaflet venation supported our analysis, without destroying the leaflets.…”

Section: Additional Specimens Examined (supporting

confidence: 83%

Estudo taxonômico de >i<Senna>/i< sect. >i<Chamaefistula>/i< ser. >i<Bacillares>/i< (Bentham) H.S.Irwin & Barneby (Leguminosae Juss. - Caesalpinioideae DC.) do Brasil

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Taxonomic study of Senna sect. Chamaefistula ser. Bacillares (Bentham) H.S.Irwin & Barneby (Leguminosae Juss. -Caesalpinioideae DC.) in BrazilSenna (Leguminosae, Cassiinae) comprises ca. 350 species mainly distributed throughout the tropical and subtropical regions of Americas. In Brazil, the genus Senna comprises ca. 80 species, widely distributed throughout all the Brazilian domains and in almost all vegetation types. Although a speciose genus, a few studies have addressed Senna in recent years and its taxonomic knowledge is still deficient. Senna sect. Chamaefistula ser. Bacillares comprises ca. 50 species restricted to the Americas being found in a great diversity of habitats, being particularly rich in forest ecotones. Many species of series Bacillares remains poorly known by scientists and further taxonomic studies are required. In this sense, the present study comprises a taxonomic study of the species of Senna sect. Chamaefistula ser. Bacillares from Brazil. The present study was based on field expeditions to sample and observe the taxa in their habitat, and on the analysis of the Herbarium collections. The present thesis is organized in two chapters, the first one refers to the discovery and description of a new and endemic species from the Atlantic Forest of Bahia. The second chapter corresponds to a taxonomic synopsis comprising 24 species and 11 varieties native to Brazil, identification keys, taxonomic comments and distribution data for each taxon.

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Section: Additional Specimens Examined (supporting

confidence: 83%

Estudo taxonômico de >i<Senna>/i< sect. >i<Chamaefistula>/i< ser. >i<Bacillares>/i< (Bentham) H.S.Irwin & Barneby (Leguminosae Juss. - Caesalpinioideae DC.) do Brasil

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“…In sect. Mimosa, other anatomical (Grohar et al, 2016;Grohar et al, 2018; and also morphometric and chromosomic data could help re-evaluate the supraspecific categories established only on morphological similarities (Barneby, 1991).…”

Section: Discussionmentioning

confidence: 99%

“…At a supraspecific level, the wax micromorphology by itself is not as relevant for the distinction between the sections Calothamnos and Mimosa as other anatomical (Grohar et al, 2016;Grohar et al, 2018; and also complex morphometric and cytogenetic analyses (Morales et al, 2018) could help reevaluate the supraspecific categories established only on morphological similarities (Barneby, 1991).…”

Section: Discussionmentioning

confidence: 99%

Micromorphology of epicuticular waxes in genus Mimosa (Fabaceae)

Grohar

Morales²,

Fortunato

et al. 2023

Darwiniana, nueva serie

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Epicuticular waxes crystallize on the foliar surface with different morphologies, which can be taxonomically relevant features in many taxa. Their morphological analysis was based on scanning electron microscopy (SEM) images on herbarium specimens of selected sections of Mimosa. The present work is the first detailed description and classification of the epidermal micromorphology in the genus Mimosa, focusing on section Calothamnos and Mimosa series Mimosa, subseries Dolentes and Brevipedes. We also describe different wax crystallization morphologies present in these taxa, identifying three different crystallization types: film, plates, and platelets. Novel epidermal micromorphologies have been described, such as papillae in M. lepidorepens. Results allow grouping taxa of the studied sections, contributing to clarifying their taxonomy. SEM images of epicuticular waxes and leaf surfaces could be a new tool for performing a new taxonomic treatment of section Mimosa subser. Dolentes and subser. Brevipedes, and section Calothamnos.

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Mimosa brevicalyx (Leguminosae-Caesalpinioideae): a new species based on molecular, anatomical, and morphological data

et al. 2021

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Venation Patterns in Mimosa subseries Dolentes and Brevipedes (Leguminosae) and their Taxonomical Inferences

Cited by 7 publications

References 20 publications

Estudo taxonômico de >i<Senna>/i< sect. >i<Chamaefistula>/i< ser. >i<Bacillares>/i< (Bentham) H.S.Irwin & Barneby (Leguminosae Juss. - Caesalpinioideae DC.) do Brasil

Estudo taxonômico de >i<Senna>/i< sect. >i<Chamaefistula>/i< ser. >i<Bacillares>/i< (Bentham) H.S.Irwin & Barneby (Leguminosae Juss. - Caesalpinioideae DC.) do Brasil

Micromorphology of epicuticular waxes in genus Mimosa (Fabaceae)

Mimosa brevicalyx (Leguminosae-Caesalpinioideae): a new species based on molecular, anatomical, and morphological data

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