Two new species of Mikania Willd. (Asteraceae: Eupatorieae) from Minas Gerais State, Brazil
ABSTRACT Mikania is a pantropical genus of Asteraceae with ca. 450 species distributed mainly in South America. Although most of its species occur in forested phytophysiognomies, significant richness is found in the mountaintop grasslands known as campos rupestres in Brazil. Recent botanical explora...
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Sociedade Botânica do Brasil
2022-05-01
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| Series: | Acta Botânica Brasílica |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062022000100123&lng=en&tlng=en |
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| author | Caetano Troncoso Oliveira Guilherme Medeiros Antar Paulo Minatel Gonella José Rubens Pirani |
| author_facet | Caetano Troncoso Oliveira Guilherme Medeiros Antar Paulo Minatel Gonella José Rubens Pirani |
| author_sort | Caetano Troncoso Oliveira |
| collection | DOAJ |
| description | ABSTRACT Mikania is a pantropical genus of Asteraceae with ca. 450 species distributed mainly in South America. Although most of its species occur in forested phytophysiognomies, significant richness is found in the mountaintop grasslands known as campos rupestres in Brazil. Recent botanical exploration of campos rupestres areas outside their core distribution, namely Serra do Padre Ângelo, Pico da Aliança, and Sete Salões State Park, all located in the eastern part of the state of Minas Gerais and within the Atlantic Forest phytogeographic domain, led to the description of several new plant species. After fieldwork and study of herbarium specimens, we recognize two new species of Mikania endemic to Pico da Aliança and Serra do Padre Ângelo. Mikania semirii is related to Mikania phaeoclados and differs by leaf indumentum, subinvolucral bract shape and size and position on the peduncle. Mikania funkiae is related to Mikania glauca and Mikania obtusata, and differs by the petiole length, leaf shape, texture, and margins. We provide full descriptions, illustrations, distribution maps, composite color figures, preliminary conservation status assessments, and comments on the taxonomy and ecology of these two species. These findings highlight the continued importance of floristic and taxonomic work on the rich eastern Brazilian flora. |
| first_indexed | 2024-12-12T07:12:03Z |
| format | Article |
| id | doaj.art-27f7f12fa00d4b6fad93434a3737a79b |
| institution | Directory Open Access Journal |
| issn | 1677-941X |
| language | English |
| last_indexed | 2024-12-12T07:12:03Z |
| publishDate | 2022-05-01 |
| publisher | Sociedade Botânica do Brasil |
| record_format | Article |
| series | Acta Botânica Brasílica |
| spelling | doaj.art-27f7f12fa00d4b6fad93434a3737a79b2022-12-22T00:33:36ZengSociedade Botânica do BrasilActa Botânica Brasílica1677-941X2022-05-013610.1590/0102-33062021abb0329Two new species of Mikania Willd. (Asteraceae: Eupatorieae) from Minas Gerais State, BrazilCaetano Troncoso Oliveirahttps://orcid.org/0000-0003-1186-6291Guilherme Medeiros Antarhttps://orcid.org/0000-0001-8109-4544Paulo Minatel Gonellahttps://orcid.org/0000-0001-8332-5326José Rubens Piranihttps://orcid.org/0000-0001-7984-4457ABSTRACT Mikania is a pantropical genus of Asteraceae with ca. 450 species distributed mainly in South America. Although most of its species occur in forested phytophysiognomies, significant richness is found in the mountaintop grasslands known as campos rupestres in Brazil. Recent botanical exploration of campos rupestres areas outside their core distribution, namely Serra do Padre Ângelo, Pico da Aliança, and Sete Salões State Park, all located in the eastern part of the state of Minas Gerais and within the Atlantic Forest phytogeographic domain, led to the description of several new plant species. After fieldwork and study of herbarium specimens, we recognize two new species of Mikania endemic to Pico da Aliança and Serra do Padre Ângelo. Mikania semirii is related to Mikania phaeoclados and differs by leaf indumentum, subinvolucral bract shape and size and position on the peduncle. Mikania funkiae is related to Mikania glauca and Mikania obtusata, and differs by the petiole length, leaf shape, texture, and margins. We provide full descriptions, illustrations, distribution maps, composite color figures, preliminary conservation status assessments, and comments on the taxonomy and ecology of these two species. These findings highlight the continued importance of floristic and taxonomic work on the rich eastern Brazilian flora.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062022000100123&lng=en&tlng=enAsteraceaeCampos rupestresCompositaecritically endangeredMikaniaMikaniinaeNeotropical florataxonomy |
| spellingShingle | Caetano Troncoso Oliveira Guilherme Medeiros Antar Paulo Minatel Gonella José Rubens Pirani Two new species of Mikania Willd. (Asteraceae: Eupatorieae) from Minas Gerais State, Brazil Acta Botânica Brasílica Asteraceae Campos rupestres Compositae critically endangered Mikania Mikaniinae Neotropical flora taxonomy |
| title | Two new species of Mikania Willd. (Asteraceae: Eupatorieae) from Minas Gerais State, Brazil |
| title_full | Two new species of Mikania Willd. (Asteraceae: Eupatorieae) from Minas Gerais State, Brazil |
| title_fullStr | Two new species of Mikania Willd. (Asteraceae: Eupatorieae) from Minas Gerais State, Brazil |
| title_full_unstemmed | Two new species of Mikania Willd. (Asteraceae: Eupatorieae) from Minas Gerais State, Brazil |
| title_short | Two new species of Mikania Willd. (Asteraceae: Eupatorieae) from Minas Gerais State, Brazil |
| title_sort | two new species of mikania willd asteraceae eupatorieae from minas gerais state brazil |
| topic | Asteraceae Campos rupestres Compositae critically endangered Mikania Mikaniinae Neotropical flora taxonomy |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062022000100123&lng=en&tlng=en |
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