Ocorrência dos gêneros Hieracium, Picrosia e Sonchus, Tribo Cichorieae no estado de São Paulo
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Data
2022-06-17
Tipo de documento
Monografia
Título da Revista
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Título de Volume
Área do conhecimento
Ciências Biológicas
Modalidade de acesso
Acesso fechado
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Autores
Silva, Ana Beatriz de Freitas
Orientador
Buturi, Fátima Otavina de Souza
Coorientador
Resumo
Família de rica diversidade, Asteraceae compreende cerca de 24.000 espécies distribuídas em 1.600 gêneros, agrupados em 12 subfamílias e 43 tribos. Cichorieae, embora seja uma tribo característica do Hemisfério Norte, possui 11 gêneros no Brasil, sendo que no estado de São Paulo foram amostrados oito gêneros e 13 espécies. Para o presente estudo foram selecionados os gêneros Hieracium, Picrosia e Sonchus, visando identificar e descrever as espécies para o estado de São Paulo, que comporão a monografia das Asteraceae para a Flora Fanerogâmica do Estado de São Paulo. A pesquisa foi realizada no laboratório do Núcleo de Pesquisa e Curadoria do Herbário SP, no Instituto de Botânica. Após consulta às coleções de Asteraceae disponíveis nos herbários, as exsicatas com amostras dos gêneros escolhidos e coletadas no estado foram selecionadas e devidamente analisadas. Além das
análises das exsicatas depositadas no Herbário SP, foram analisadas virtualmente imagens das exsicatas disponíveis em alguns herbários, como UEC, SPF e SPSF. Após as análises, e a seleção de caracteres diagnósticos, foi elaborada a chave de identificação, as descrições com as principais características morfológicas, informações taxonômicas, distribuição geográfica e pranchas com imagens das espécies. Foram reconhecidas quatro espécies da tribo no estado de São Paulo, sendo uma do gênero Hieracium (H. commersonii Monnier), uma de Picrosia (P. longifolia D.Don) e duas de Sonchus (S. asper (L.) Hill e S. oleraceus L.). Devido à ausência de suporte morfológico H. ignatianum foi considerado sinônimo de H.
commersonii. Para as espécies de Sonchus, o principal caráter diagnóstico é a morfologia das cipselas. Picrosia é um gênero pouco amostrado no estado de São Paulo e as coleções são extremamente antigas, sendo que as últimas coletas são da década de 40. De uma forma geral, os gêneros estudados estão pouco amostrados no estado, necessitando de novas coletas, abrangendo diversas áreas, além disso, devido a complexidade dos gêneros, são primordiais estudos moleculares e genéticos em conjunto com os estudos morfológicos para a identificação correta dos táxons presentes na tribo.
Family of rich diversity, Asteraceae comprises about 24.000 species distributed in 1.600 genera grouped into 12 subfamilies and 43 tribes. Cichorieae, although it is a tribe characteristic of the Northern Hemisphere, has 11 genera in Brazil, and in the state of São Paulo, eight genera and 13 species were sampled. For the present study, the genera Hieracium, Picrosia and Sonchus were selected, aiming to identify and describe the species for the state of São Paulo, which will compose the Asteraceae´s monograph for the Phanerogamic Flora of the State of São Paulo. The research was carried out in the laboratory of the Research and Curatorship Center of the SP Herbarium, at the Botany Institute. After consulting the collections of Asteraceae available in the herbaria, the exsiccates with samples of the genera chosen and collected in the state were selected and duly analyzed. In addition to the analysis of the exsiccates deposited in the SP Herbarium, images of the exsiccates available in some herbaria, such as UEC, SPF and SPSF were virtually analyzed. After the analysis, and selection of diagnostic characters, the identification key, the descriptions with the main morphological characteristics, the taxonomic information, the geographic distribution and the plates with images of the species were prepared. Four species of the tribe were recognized in the state of São Paulo, one of the genus Hieracium (H. commersonii Monnier), one of Picrosia (P. longifolia D.Don) and two of Sonchus (S. asper (L.) Hill and S. oleraceus L.). Due to the absence of morphological support, H. ignatianum was considered synonymous with H. commersonii. For Sonchus species, the main diagnostic character is the morphology of the cypsela. Picrosia is a genus little sampled in the state of São Paulo and the collections are extremely old, with the last collections dating from the 40s. In general, the genera studied are poorly sampled in the state, requiring new collections, covering several areas, in addition, due to the complexity of the genera, molecular and genetic studies associated withmorphological studies are essential for the correct identification of the taxa present in the tribe.
Family of rich diversity, Asteraceae comprises about 24.000 species distributed in 1.600 genera grouped into 12 subfamilies and 43 tribes. Cichorieae, although it is a tribe characteristic of the Northern Hemisphere, has 11 genera in Brazil, and in the state of São Paulo, eight genera and 13 species were sampled. For the present study, the genera Hieracium, Picrosia and Sonchus were selected, aiming to identify and describe the species for the state of São Paulo, which will compose the Asteraceae´s monograph for the Phanerogamic Flora of the State of São Paulo. The research was carried out in the laboratory of the Research and Curatorship Center of the SP Herbarium, at the Botany Institute. After consulting the collections of Asteraceae available in the herbaria, the exsiccates with samples of the genera chosen and collected in the state were selected and duly analyzed. In addition to the analysis of the exsiccates deposited in the SP Herbarium, images of the exsiccates available in some herbaria, such as UEC, SPF and SPSF were virtually analyzed. After the analysis, and selection of diagnostic characters, the identification key, the descriptions with the main morphological characteristics, the taxonomic information, the geographic distribution and the plates with images of the species were prepared. Four species of the tribe were recognized in the state of São Paulo, one of the genus Hieracium (H. commersonii Monnier), one of Picrosia (P. longifolia D.Don) and two of Sonchus (S. asper (L.) Hill and S. oleraceus L.). Due to the absence of morphological support, H. ignatianum was considered synonymous with H. commersonii. For Sonchus species, the main diagnostic character is the morphology of the cypsela. Picrosia is a genus little sampled in the state of São Paulo and the collections are extremely old, with the last collections dating from the 40s. In general, the genera studied are poorly sampled in the state, requiring new collections, covering several areas, in addition, due to the complexity of the genera, molecular and genetic studies associated withmorphological studies are essential for the correct identification of the taxa present in the tribe.
Palavras-chave
Cichorieae, Compositae, Diversidade, Flora de São Paulo