Taxonomy, palynology, and seed morphology of Paepalanthus decumbens, a new species of Eriocaulaceae from Minas Gerais, Brazil
Background and aims – Paepalanthus is the largest genus of Neotropical Eriocaulaceae and the largest genus of Brazilian monocots. Much of its taxonomic and morphological diversity remains unknown. A new species is described, with details on pollen and seed morphology.Methods – The morphological desc...
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| Format: | Article |
| Language: | English |
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Meise Botanic Garden
2018-08-01
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| Series: | Plant Ecology and Evolution |
| Subjects: | |
| Online Access: | https://plecevo.eu/article/24548/download/pdf/ |
| _version_ | 1797641876620181504 |
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| author | Marcelo Trovó Lopes de Oliveira Wellerson Picanço Vânia Gonçalves-Esteves |
| author_facet | Marcelo Trovó Lopes de Oliveira Wellerson Picanço Vânia Gonçalves-Esteves |
| author_sort | Marcelo Trovó Lopes de Oliveira |
| collection | DOAJ |
| description | Background and aims – Paepalanthus is the largest genus of Neotropical Eriocaulaceae and the largest genus of Brazilian monocots. Much of its taxonomic and morphological diversity remains unknown. A new species is described, with details on pollen and seed morphology.Methods – The morphological description of the vegetative and floral characters was made using a stereoscopic microscope with camera. Pollen and seed samples from the new species and from two related taxa were studied under light microscopy and scanning electron microscopy.Key results – Paepalanthus decumbens is described and illustrated, including details of pollen grains and seeds. The species is restricted to a small area in the campos rupestres of Serra de São José (Minas Gerais, Brazil), and therefore should be considered as critically endangered. The decumbent stem, falciform leaves with long trichomes along the margins, the numerous and sericeous scapes of roughly the same size of the leaves, and the dark castaneous involucral bracts are useful features for the recognition of the new species. Paepalanthus decumbens is placed in P. subsect. Polyactis and compared with P. microphyllus and P. stannardii, which have their pollen grains and seeds also herein described for the first time. |
| first_indexed | 2024-03-11T13:51:57Z |
| format | Article |
| id | doaj.art-2541639ae0f746ce98f4a0a3ca4ead2e |
| institution | Directory Open Access Journal |
| issn | 2032-3921 |
| language | English |
| last_indexed | 2024-03-11T13:51:57Z |
| publishDate | 2018-08-01 |
| publisher | Meise Botanic Garden |
| record_format | Article |
| series | Plant Ecology and Evolution |
| spelling | doaj.art-2541639ae0f746ce98f4a0a3ca4ead2e2023-11-02T08:29:22ZengMeise Botanic GardenPlant Ecology and Evolution2032-39212018-08-01151225226110.5091/plecevo.2018.142124548Taxonomy, palynology, and seed morphology of Paepalanthus decumbens, a new species of Eriocaulaceae from Minas Gerais, BrazilMarcelo Trovó Lopes de Oliveira0Wellerson Picanço1Vânia Gonçalves-Esteves2Universidade Federal do Rio de JaneiroDepartamento de Botânica, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de JaneiroDepartamento de Botânica, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de JaneiroBackground and aims – Paepalanthus is the largest genus of Neotropical Eriocaulaceae and the largest genus of Brazilian monocots. Much of its taxonomic and morphological diversity remains unknown. A new species is described, with details on pollen and seed morphology.Methods – The morphological description of the vegetative and floral characters was made using a stereoscopic microscope with camera. Pollen and seed samples from the new species and from two related taxa were studied under light microscopy and scanning electron microscopy.Key results – Paepalanthus decumbens is described and illustrated, including details of pollen grains and seeds. The species is restricted to a small area in the campos rupestres of Serra de São José (Minas Gerais, Brazil), and therefore should be considered as critically endangered. The decumbent stem, falciform leaves with long trichomes along the margins, the numerous and sericeous scapes of roughly the same size of the leaves, and the dark castaneous involucral bracts are useful features for the recognition of the new species. Paepalanthus decumbens is placed in P. subsect. Polyactis and compared with P. microphyllus and P. stannardii, which have their pollen grains and seeds also herein described for the first time.https://plecevo.eu/article/24548/download/pdf/flower morphologyMinas GeraisPoalespollen gr |
| spellingShingle | Marcelo Trovó Lopes de Oliveira Wellerson Picanço Vânia Gonçalves-Esteves Taxonomy, palynology, and seed morphology of Paepalanthus decumbens, a new species of Eriocaulaceae from Minas Gerais, Brazil Plant Ecology and Evolution flower morphology Minas Gerais Poales pollen gr |
| title | Taxonomy, palynology, and seed morphology of Paepalanthus decumbens, a new species of Eriocaulaceae from Minas Gerais, Brazil |
| title_full | Taxonomy, palynology, and seed morphology of Paepalanthus decumbens, a new species of Eriocaulaceae from Minas Gerais, Brazil |
| title_fullStr | Taxonomy, palynology, and seed morphology of Paepalanthus decumbens, a new species of Eriocaulaceae from Minas Gerais, Brazil |
| title_full_unstemmed | Taxonomy, palynology, and seed morphology of Paepalanthus decumbens, a new species of Eriocaulaceae from Minas Gerais, Brazil |
| title_short | Taxonomy, palynology, and seed morphology of Paepalanthus decumbens, a new species of Eriocaulaceae from Minas Gerais, Brazil |
| title_sort | taxonomy palynology and seed morphology of paepalanthus decumbens a new species of eriocaulaceae from minas gerais brazil |
| topic | flower morphology Minas Gerais Poales pollen gr |
| url | https://plecevo.eu/article/24548/download/pdf/ |
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