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The inflorescences of Portulacaceae have traditionally been considered capitula and their morphology and architecture have not been studied in detail. The purpose of this study was to expand the knowledge on the inflorescences within this family, comparing members of distinct lineages of Portulaca occurring in Brazil, to understand some systematic...
The inflorescences of Portulacaceae have traditionally been considered capitula and their morphology and architecture have not been studied in detail. The purpose of this study was to expand the knowledge on the inflorescences within this family, comparing members of distinct lineages of Portulaca occurring in Brazil, to understand some systematic...
The shortage of reliable primary taxonomic data limits the description of biological taxa and the understanding of biodiver-sity patterns and processes, complicating biogeographical, ecological, and evolutionary studies. This deficit creates a significant taxo-nomic impediment to biodiversity research and conservation planning. The taxonomic impedi...
The shortage of reliable primary taxonomic data limits the description of biological taxa and the understanding of biodiver-sity patterns and processes, complicating biogeographical, ecological, and evolutionary studies. This deficit creates a significant taxo-nomic impediment to biodiversity research and conservation planning. The taxonomic impedi...
Portulaca minensis is a poorly known species of Portulacaceae, considered exclusive to the campo rupestre vegetation in Minas Gerais, Brazil. It shares morphological features with members of the Cryptopetala clade, composed of P. mucronata, P. cryptopetala, and P. hirsutissima. The purpose of this paper is to expand the knowledge about the taxonomy...
A Botânica estuda e classifica os vegetais considerando as formas, estruturas e composição; seu conhecimento está intimamente associado ao cotidiano das pessoas. Contudo, sua presença quase sempre é ignorada, de modo que, na Educação Básica, é vista como um conteúdo muito teórico, descritiva e desestimulante. Por isso, é importante saber a opinião...
The urge to organise the world around us is an essential part of human nature. Naming and categorising enable us to store and access information ef ciently. The need to name and categorise extends to the natural world and, in particular, to living organisms. The science underpinning this area of knowledge is called Taxonomy, and is as old as humani...
Portulaca hirsutissima (Portulacaceae) is a succulent herb occurring in open fields, sandy or rocky soil of separate Brazilian areas. On the basis of the analyses of seeds and pollen grains macro- and micromorphology, a significative variation, which is related to the distribution pattern, was found. Two new species are here proposed, described and...
