Morphometric Investigation of a Species Complex in <i>Mimosa</i> Section <i>Batocaulon</i> Series <i>Cordistipulae</i> (Leguminosae, Caesalpinioideae)
<i>Mimosa</i> series <i>Cordistipulae</i> was created by Barneby in 1991, embracing species diagnosed by their small subshrubby habit and the presence of gland-tipped setae and trimerous flowers. Most species are endemic to Northeastern Brazil, and some possess characters dee...
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2025-01-01
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| author | Janaína G. A. Nascimento Luciano P. Queiroz Marlon C. Machado Cássio van den Berg |
| author_facet | Janaína G. A. Nascimento Luciano P. Queiroz Marlon C. Machado Cássio van den Berg |
| author_sort | Janaína G. A. Nascimento |
| collection | DOAJ |
| description | <i>Mimosa</i> series <i>Cordistipulae</i> was created by Barneby in 1991, embracing species diagnosed by their small subshrubby habit and the presence of gland-tipped setae and trimerous flowers. Most species are endemic to Northeastern Brazil, and some possess characters deemed diagnostic which nonetheless overlap, making species identification difficult. Our study aimed to test species circumscriptions and sets of characters that could be applied to unequivocally distinguish the species. Twelve populations (225 individuals) were collected at nine localities, encompassing the Brazilian vegetation types <i>Caatinga</i>, <i>Campos Rupestres</i> and <i>Restinga</i>. Linear measurements of 38 floral and vegetative characters were measured and analyzed using Canonical Variate Analysis and cluster analysis. The first two canonical axes explained 41.4% and 18.9% of the variation and separated two populations of the group recently described as a new species. Vegetative characters are more informative for species delimitation than flower characters, and most groups are distinguished primarily by the number of pinnae pairs, number of leaflets per pinna and length of the leaf rachis. The species displaying the highest morphological similarity are <i>M. misera</i>, <i>M. leptantha</i> and <i>M. minarum</i>. The traditional morphometric approach was capable of objectively dealing with a type of variation that would be difficult to interpret by purely examining herbarium specimens. |
| format | Article |
| id | doaj-art-a786603eff8649d29767b43bf99ea1ff |
| institution | Kabale University |
| issn | 2223-7747 |
| language | English |
| publishDate | 2025-01-01 |
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| spelling | doaj-art-a786603eff8649d29767b43bf99ea1ff2025-01-24T13:46:42ZengMDPI AGPlants2223-77472025-01-0114219410.3390/plants14020194Morphometric Investigation of a Species Complex in <i>Mimosa</i> Section <i>Batocaulon</i> Series <i>Cordistipulae</i> (Leguminosae, Caesalpinioideae)Janaína G. A. Nascimento0Luciano P. Queiroz1Marlon C. Machado2Cássio van den Berg3Departamento de Ciências Biológicas, Universidade Estadual de Feira de Santana, Av. Transnordestina s.n., Feira de Santana 44036-900, Bahia, BrazilDepartamento de Ciências Biológicas, Universidade Estadual de Feira de Santana, Av. Transnordestina s.n., Feira de Santana 44036-900, Bahia, BrazilDepartamento de Ciências Biológicas, Universidade Estadual de Feira de Santana, Av. Transnordestina s.n., Feira de Santana 44036-900, Bahia, BrazilDepartamento de Ciências Biológicas, Universidade Estadual de Feira de Santana, Av. Transnordestina s.n., Feira de Santana 44036-900, Bahia, Brazil<i>Mimosa</i> series <i>Cordistipulae</i> was created by Barneby in 1991, embracing species diagnosed by their small subshrubby habit and the presence of gland-tipped setae and trimerous flowers. Most species are endemic to Northeastern Brazil, and some possess characters deemed diagnostic which nonetheless overlap, making species identification difficult. Our study aimed to test species circumscriptions and sets of characters that could be applied to unequivocally distinguish the species. Twelve populations (225 individuals) were collected at nine localities, encompassing the Brazilian vegetation types <i>Caatinga</i>, <i>Campos Rupestres</i> and <i>Restinga</i>. Linear measurements of 38 floral and vegetative characters were measured and analyzed using Canonical Variate Analysis and cluster analysis. The first two canonical axes explained 41.4% and 18.9% of the variation and separated two populations of the group recently described as a new species. Vegetative characters are more informative for species delimitation than flower characters, and most groups are distinguished primarily by the number of pinnae pairs, number of leaflets per pinna and length of the leaf rachis. The species displaying the highest morphological similarity are <i>M. misera</i>, <i>M. leptantha</i> and <i>M. minarum</i>. The traditional morphometric approach was capable of objectively dealing with a type of variation that would be difficult to interpret by purely examining herbarium specimens.https://www.mdpi.com/2223-7747/14/2/194canonical variate analysiscluster analysismultivariate analysisspecies delimitation |
| spellingShingle | Janaína G. A. Nascimento Luciano P. Queiroz Marlon C. Machado Cássio van den Berg Morphometric Investigation of a Species Complex in <i>Mimosa</i> Section <i>Batocaulon</i> Series <i>Cordistipulae</i> (Leguminosae, Caesalpinioideae) Plants canonical variate analysis cluster analysis multivariate analysis species delimitation |
| title | Morphometric Investigation of a Species Complex in <i>Mimosa</i> Section <i>Batocaulon</i> Series <i>Cordistipulae</i> (Leguminosae, Caesalpinioideae) |
| title_full | Morphometric Investigation of a Species Complex in <i>Mimosa</i> Section <i>Batocaulon</i> Series <i>Cordistipulae</i> (Leguminosae, Caesalpinioideae) |
| title_fullStr | Morphometric Investigation of a Species Complex in <i>Mimosa</i> Section <i>Batocaulon</i> Series <i>Cordistipulae</i> (Leguminosae, Caesalpinioideae) |
| title_full_unstemmed | Morphometric Investigation of a Species Complex in <i>Mimosa</i> Section <i>Batocaulon</i> Series <i>Cordistipulae</i> (Leguminosae, Caesalpinioideae) |
| title_short | Morphometric Investigation of a Species Complex in <i>Mimosa</i> Section <i>Batocaulon</i> Series <i>Cordistipulae</i> (Leguminosae, Caesalpinioideae) |
| title_sort | morphometric investigation of a species complex in i mimosa i section i batocaulon i series i cordistipulae i leguminosae caesalpinioideae |
| topic | canonical variate analysis cluster analysis multivariate analysis species delimitation |
| url | https://www.mdpi.com/2223-7747/14/2/194 |
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