Multi-loci phylogeny and morphological evidence support the recognition of Januaria (Spermacoceae, Rubiaceae), a new monospecific genus endemic to the North of Minas Gerais (Brazil)
Abstract Januaria is described as a new monospecific genus of Rubiaceae, based on material from Januária, northern Minas Gerais, Brazil. The new taxon is endemic to Brazil, occurring in a vegetation type that is known locally as “carrasco”, in the southern limit of the Caatinga biome. Morphological...
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Academia Brasileira de Ciências
2023-05-01
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| Series: | Anais da Academia Brasileira de Ciências |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652023000100805&lng=en&tlng=en |
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| author | MARIELA NUÑEZ-FLORENTIN JAVIER E. FLORENTÍN ROBERTO M. SALAS STEVEN DESSEIN STEVEN B. JANSSENS |
| author_facet | MARIELA NUÑEZ-FLORENTIN JAVIER E. FLORENTÍN ROBERTO M. SALAS STEVEN DESSEIN STEVEN B. JANSSENS |
| author_sort | MARIELA NUÑEZ-FLORENTIN |
| collection | DOAJ |
| description | Abstract Januaria is described as a new monospecific genus of Rubiaceae, based on material from Januária, northern Minas Gerais, Brazil. The new taxon is endemic to Brazil, occurring in a vegetation type that is known locally as “carrasco”, in the southern limit of the Caatinga biome. Morphological (including palynological and SEM analyses) and molecular phylogenetic analyses based on nuclear (ETS, ITS) and plastid (atpB-rbcL, peth, rps16, trnL-trnF) sequence data were performed in the Spermacoce clade (tribe Spermacoceae). The molecular position and morphological features (a unique fruit dehiscence type, and pollen exine with simple reticulum) support Januaria as a new genus, with Mitracarpus as sister group, from which it differs principally in calyx morphology, corolla shape, and fruit dehiscence. Additionally, a further comparison with other morphologically similar genera is presented. We provide a formal description of Januaria, together with a distribution map and comments on its conservation. In addition, a discussion about the Brazilian endemics of the Spermacoce clade is given, also with a key to all the genera of this group present in the country. |
| first_indexed | 2024-03-13T11:05:33Z |
| format | Article |
| id | doaj.art-83e823764a9247bcb3d865b103e6b4fa |
| institution | Directory Open Access Journal |
| issn | 1678-2690 |
| language | English |
| last_indexed | 2024-03-13T11:05:33Z |
| publishDate | 2023-05-01 |
| publisher | Academia Brasileira de Ciências |
| record_format | Article |
| series | Anais da Academia Brasileira de Ciências |
| spelling | doaj.art-83e823764a9247bcb3d865b103e6b4fa2023-05-16T07:34:45ZengAcademia Brasileira de CiênciasAnais da Academia Brasileira de Ciências1678-26902023-05-0195110.1590/0001-3765202320211601Multi-loci phylogeny and morphological evidence support the recognition of Januaria (Spermacoceae, Rubiaceae), a new monospecific genus endemic to the North of Minas Gerais (Brazil)MARIELA NUÑEZ-FLORENTINhttps://orcid.org/0000-0001-8852-0470JAVIER E. FLORENTÍNhttps://orcid.org/0000-0001-9338-4776ROBERTO M. SALAShttps://orcid.org/0000-0001-7799-9017STEVEN DESSEINhttps://orcid.org/0000-0002-3179-4005STEVEN B. JANSSENShttps://orcid.org/0000-0003-1246-9474Abstract Januaria is described as a new monospecific genus of Rubiaceae, based on material from Januária, northern Minas Gerais, Brazil. The new taxon is endemic to Brazil, occurring in a vegetation type that is known locally as “carrasco”, in the southern limit of the Caatinga biome. Morphological (including palynological and SEM analyses) and molecular phylogenetic analyses based on nuclear (ETS, ITS) and plastid (atpB-rbcL, peth, rps16, trnL-trnF) sequence data were performed in the Spermacoce clade (tribe Spermacoceae). The molecular position and morphological features (a unique fruit dehiscence type, and pollen exine with simple reticulum) support Januaria as a new genus, with Mitracarpus as sister group, from which it differs principally in calyx morphology, corolla shape, and fruit dehiscence. Additionally, a further comparison with other morphologically similar genera is presented. We provide a formal description of Januaria, together with a distribution map and comments on its conservation. In addition, a discussion about the Brazilian endemics of the Spermacoce clade is given, also with a key to all the genera of this group present in the country.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652023000100805&lng=en&tlng=enCaatingafruitBrazilian Atlantic dry forestJanuaria lombardii |
| spellingShingle | MARIELA NUÑEZ-FLORENTIN JAVIER E. FLORENTÍN ROBERTO M. SALAS STEVEN DESSEIN STEVEN B. JANSSENS Multi-loci phylogeny and morphological evidence support the recognition of Januaria (Spermacoceae, Rubiaceae), a new monospecific genus endemic to the North of Minas Gerais (Brazil) Anais da Academia Brasileira de Ciências Caatinga fruit Brazilian Atlantic dry forest Januaria lombardii |
| title | Multi-loci phylogeny and morphological evidence support the recognition of Januaria (Spermacoceae, Rubiaceae), a new monospecific genus endemic to the North of Minas Gerais (Brazil) |
| title_full | Multi-loci phylogeny and morphological evidence support the recognition of Januaria (Spermacoceae, Rubiaceae), a new monospecific genus endemic to the North of Minas Gerais (Brazil) |
| title_fullStr | Multi-loci phylogeny and morphological evidence support the recognition of Januaria (Spermacoceae, Rubiaceae), a new monospecific genus endemic to the North of Minas Gerais (Brazil) |
| title_full_unstemmed | Multi-loci phylogeny and morphological evidence support the recognition of Januaria (Spermacoceae, Rubiaceae), a new monospecific genus endemic to the North of Minas Gerais (Brazil) |
| title_short | Multi-loci phylogeny and morphological evidence support the recognition of Januaria (Spermacoceae, Rubiaceae), a new monospecific genus endemic to the North of Minas Gerais (Brazil) |
| title_sort | multi loci phylogeny and morphological evidence support the recognition of januaria spermacoceae rubiaceae a new monospecific genus endemic to the north of minas gerais brazil |
| topic | Caatinga fruit Brazilian Atlantic dry forest Januaria lombardii |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652023000100805&lng=en&tlng=en |
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