Two new species and one new variety of Mimosa sect. Habbasia (Leguminosae: Mimosoideae) from Central Brazil

Dutra, Valquíria Ferreira; Garcia, Flávia C. P.

doi:10.1007/s12225-012-9427-8

Cited by 10 publications

(7 citation statements)

References 7 publications

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“…Mimosa neonitens also shares similarities with M. myrioglandulosa Dutra & Garcia (2012), and the areas of occurrence for both species are relatively close, even though not coincident. Mimosa myrioglandulosa differs from M. neonitens by the lack of filiform setae on stems, its sessile (i.e.…”

Section: Taxonomic Treatmentmentioning

confidence: 91%

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Less is more. Adjusting the taxonomy of the polytypic Mimosa setosa (Leguminosae, Mimosoid)

2017

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Mimosa setosa, as currently circumscribed, is a polytypic species comprising four subspecies and eight varieties. Recent phylogenetic analyses showed that these infraspecific taxa do not form a monophyletic group. A morphological analysis of a complete set of specimens gathered from several herbaria, including types and recent collections, combined with the application of the Phylogenetic Species Concept lead to recognition of taxa currently placed under M. setosa as six different species with no infraspecific taxa recognised. Congruence among phylogenetic data, geography and use of the specific rank as the least inclusive unity for description allows for better comparison of biological diversity and an improved circumscription of taxa in the M. setosa complex. Key words: Brazil, campo rupestre, cerrado, Fabaceae, Phylogenetic Species Concept. ResumoMimosa setosa, em sua circunscrição atual, é uma espécie politípica que inclui quatro subespécies e oito variedades. Estudos filogenéticos recentes indicam que esses táxons infraespecíficos não formam um grupo monofilético. A análise morfológica de um conjunto de espécimes obtidos em diversos herbários, incluindo tipos e coletas recentes, associada à aplicação do Conceito Filogenético de espécie permite desmembrar M. setosa em seis diferentes espécies sem táxons infraespecíficos. Congruência entre dados filogenéticos, geografia e adoção do nível de espécie como a unidade mínima para descrição de táxons permite uma melhor comparação da diversidade biológica e uma circunscrição mais adequada dos táxons envolvidos no complexo M. setosa. Palavras-chave: Brasil, campo rupestre, cerrado, Fabaceae, Conceito Filogenético de espécie. (Barneby 1991;Villiers 2002). In the Americas, Brazil is a key area for studies in the genus, since 358 species are found in the country, 265 of which are endemic (BFG 2015). Although morphologically variable, the genus can be broadly defined by the presence of a craspedium-like fruit (Barneby 1991) and, within the diplo-or haplostemonous mimosoids, by the almost ubiquitous lack of extrafloral nectaries, which are present only in a small group of 15 species (Barneby 1991;Simon et al. 2011). Less is more. Adjusting the taxonomy of the polytypicThe taxonomy of Mimosa is based on the monumental work of Barneby (1991), the first and single most comprehensive revision produced after the treatments of Bentham (1841Bentham ( , 1842Bentham ( , 1845Bentham ( , 1846Bentham ( , 1875Bentham ( , 1876 (1842) is among the many polytypic species recognized by Barneby (1991). Because of the lack of specimens with fruits, this species was initially ascribed by Bentham (1845) to Mimosa ser. Pachycarpae Benth., which is characterized by the presence of unjointed craspedia. However, the species currently belongs to M. ser. Setosae Barneby (1991), which was created mainly to accommodate species from M. ser. Pachycarpae that in fact have typical craspedial fruits.Mimosa setosa comprises four subspecies, three of them with varieties, which are largely differen...

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Section: Taxonomic Treatmentmentioning

confidence: 91%

“…Mimosa myrioglandulosa differs from M. neonitens by the lack of filiform setae on stems, its sessile (i.e. not stipitate) glandular setae and, primarily, by its un-jointed craspedial fruit, which was erroneously described as a "sacelo" by Dutra & Garcia (2012).…”

Section: Taxonomic Treatmentmentioning

confidence: 99%

Less is more. Adjusting the taxonomy of the polytypic Mimosa setosa (Leguminosae, Mimosoid)

2017

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“…Piresianae by its indumentum of short glandular setae (Atahuachi & Hughes 2006). Other example is M. myrioglandulosa differing from M. maguirei by its stems with sessile glandular trichomes (Dutra & Garcia 2013b). Additional recently published species, in which indumentum is an important characteristic used to separate taxa, are: M. foreroana (Santos-Silva & Tozzi 2012); M. longistipula Garcia 2013a), andM.…”

Section: Introductionmentioning

confidence: 99%

A new glandular Mimosa species from Southern Brazil and insights about its glandular trichomes micromorphology

et al. 2019

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Mimosa baptistae is a new species presenting stalked glandular trichomes that give it a glutinous appearance, mainly with respect to the leaflets. Furthermore, it is an aculeate species, with multijugate leaves, white stamens, and fruits also covered by glandular trichomes. A herbaria survey and fieldwork only recorded this species as occurring on sandstone outcrops of the city Caçapava do Sul, Brazil. The species may be confused with other species of Mimosa sect. Batocaulon ser. Stipellares such as M. bifurca, M. sobralii and M. lepidota. However, features such as absence/presence of aculei, stamens color, habitat, and flower features are useful for distinguishing them from the new species. Here, we provide notes on morphology, geographic distribution, as well as anatomical detail of its glandular trichomes and content. Finally, we discussed the taxonomic significance of the micromorphology of glandular trichomes and their content in Mimosa ser. Stipellares as well as the potential applicability of such features to better understand the morphology of this series.

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“…At the same time, he was aware of some issues in his treatment, which he left to be solved by botanists with easy access to the plants in the field (Barneby 1991: 4). Accordingly, many novelties in Mimosa taxonomy, particularly new taxa, have been published by Latin American researchers (Grether 2000, Morales & Fortunato 2010, Simon et al 2010, Morales 2012, Savassi-Coutinho et al 2012, Morales et al 2013, 2015, Dutra & Garcia 2012, 2014, Borges et al 2014, Jordão et al 2014.…”

Section: Introductionmentioning

confidence: 99%

<div class="page" title="Page 1"><div class="layoutArea"><div class="column">Four they are! Broadening the description of Mimosa flabellifolia (Leguminosae Mimosoideae), a rare species from the Brazilian Cerrado</div></div></div>

Borges

Antar

2016

Phytotaxa

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During a recent floristic survey in the Jalapão region, located in the state of Tocatins, Brazil, the second collection of Mimosa flabellifolia, a species known only from the type material, was made. Since the type collection presents only fruits, we herein broaden the description of the species to include floral features. Knowledge about flower morphology, in particular the number of organs, confirms the placement of M. flabellifolia in the tetramerous M. ser. Paucifoliatae. Illustrations, notes and a discussion on issues related to Mimosa taxonomy and conservation in the Jalapão region are presented.

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Two new species and one new variety of Mimosa sect. Habbasia (Leguminosae: Mimosoideae) from Central Brazil

Cited by 10 publications

References 7 publications

Less is more. Adjusting the taxonomy of the polytypic Mimosa setosa (Leguminosae, Mimosoid)

Less is more. Adjusting the taxonomy of the polytypic Mimosa setosa (Leguminosae, Mimosoid)

A new glandular Mimosa species from Southern Brazil and insights about its glandular trichomes micromorphology

<div class="page" title="Page 1"><div class="layoutArea"><div class="column">Four they are! Broadening the description of Mimosa flabellifolia (Leguminosae Mimosoideae), a rare species from the Brazilian Cerrado</div></div></div>

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