Three New Species of &lt;I&gt;Mimosa&lt;/I&gt; (Leguminosae) from Minas Gerais, Brazil

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

doi:10.1600/036364413x666651

Cited by 11 publications

(6 citation statements)

References 17 publications

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“…The Cerrado predominates in the eastern part of the area in the Espinhaç o Range, and the Caatinga occurs in the center and west of the area at elevations below 800 m between the Sã o Francisco River and the Espinhaç o Range. We also observed vegetation transition zones in the Parque Estadual Caminho dos Gerais, a protected area where Cerrado physiognomies [30] (mainly grassland) surrounded by Caatinga prevail (Figure 1). …”

Section: Study Areamentioning

confidence: 70%

Comparative Analysis of MODIS Time-Series Classification Using Support Vector Machines and Methods Based upon Distance and Similarity Measures in the Brazilian Cerrado-Caatinga Boundary

et al. 2015

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Abstract:We have mapped the primary native and exotic vegetation that occurs in the Cerrado-Caatinga transition zone in Central Brazil using MODIS-NDVI time series (product MOD09Q1) data over a two-year period (2011)(2012)(2013). Our methodology consists of the following steps: (a) the development of a three-dimensional cube composed of the NDVI-MODIS time series; (b) the removal of noise; (c) the selection of reference temporal curves and classification using similarity and distance measures; and (d) classification using support vector machines (SVMs). We evaluated different temporal classifications using similarity and distance measures of land use and land cover considering several combinations of attributes. Among the classification using distance and similarity measures, the best result employed the Euclidean distance with the NDVI-MODIS data by considering more than one reference temporal curve per class and adopting six mapping classes. In the majority of tests, the SVM classifications yielded better results than other methods. The best OPEN ACCESSRemote Sens. 2015, 7 12161 result among all the tested methods was obtained using the SVM classifier with a fourth-degree polynomial kernel; an overall accuracy of 80.75% and a Kappa coefficient of 0.76 were obtained. Our results demonstrate the potential of vegetation studies in semiarid ecosystems using time-series data.

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Section: Study Areamentioning

confidence: 70%

Comparative Analysis of MODIS Time-Series Classification Using Support Vector Machines and Methods Based upon Distance and Similarity Measures in the Brazilian Cerrado-Caatinga Boundary

et al. 2015

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“…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. urandiensis (Santos-Silva et al 2013).…”

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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“…2012;Savassi-Coutinho & al. 2012;Dutra & Garcia 2013;Santos-Silva & al. 2013;Schmidt Silveira, & al.…”

Section: Introductionmentioning

confidence: 99%

Typification and taxonomy in Mimosa subser. Obstrigosae (Fabaceae, mimosoid clade)

2018

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Three New Species of <I>Mimosa</I> (Leguminosae) from Minas Gerais, Brazil

Cited by 11 publications

References 17 publications

Comparative Analysis of MODIS Time-Series Classification Using Support Vector Machines and Methods Based upon Distance and Similarity Measures in the Brazilian Cerrado-Caatinga Boundary

Comparative Analysis of MODIS Time-Series Classification Using Support Vector Machines and Methods Based upon Distance and Similarity Measures in the Brazilian Cerrado-Caatinga Boundary

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

Typification and taxonomy in Mimosa subser. Obstrigosae (Fabaceae, mimosoid clade)

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