A5004973743- Plant Diversity and Evolution
- Plant and animal studies
- Plant and Fungal Species Descriptions
- Botany, Ecology, and Taxonomy Studies
- Fern and Epiphyte Biology
- Botanical Research and Applications
- Science and Education Research
- Growth and nutrition in plants
- Phytochemistry Medicinal Plant Applications
- Education and Digital Technologies
- Plant Taxonomy and Phylogenetics
- Science and Science Education
- Botany and Plant Ecology Studies
Universidade Estadual Paulista (Unesp)
2014-2024
Flowers in Eriocaulaceae, a monocot family that is highly diversified Brazil, are generally trimerous, but dimerous flowers occur Paepalanthus and few other genera. The floral merism an evolutionary context, however, unclear. encompasses significant morphological variation leading to still unresolved infrageneric classification. Ontogenetic comparative studies of groups Eriocaulaceae lacking, albeit necessary establish evolution characters such as their role putative synapomorphies.We...
Abstract We here evaluate the conflicting recent splitter and lumper strategies concerning generic classification system of Eriocaulaceae, whether Paepalanthus s.str. its proposed segregate genera are morphologically recognizable. To this end, we examine evidence from inflorescence branching patterns, seed coat, phylogeny in detail, contrast circumscriptions with available data. also indicate possible consequences for herbarium curators, keepers users large databases, generalist...
Mapania belongs to Mapanioideae, a quite controversial subfamily in Cyperaceae due the existence of unusual characters both reproductive and vegetative organs. The genus is represented by seven species Northern Brazil but taxonomic valuable information related leaf organs still unknown. present study aimed anatomical description (either basal leaves or cataphylls involucral bracts) three representative Brazilian Mapania. Samples cataphylls, bracts were sectioned stained for observations...
Floral developmental studies are crucial for understanding the evolution of floral structures and sexual systems in angiosperms. Within monocot order Poales, both subfamilies Eriocaulaceae have unisexual flowers bearing unusual nectaries. Few previous investigated development subfamily Eriocauloideae, which includes large, diverse widespread genus Eriocaulon. To understand variation androecium, gynoecium nectaries Eriocaulaceae, we analysed vasculature Eriocaulon compared it with that...
Paepalanthus echinoides, a new species of sect. Conodiscus, is described and illustrated. This endemic to central Brazil, growing in sandy humid soils. It easily distinguished by its dimerous flowers, small leaves arranged rosette, the capillaceous numerous scapes, capitula, adpressed, dark brown spathes. We present comparisons with P. sphaerocephalus exiguus, other two Conodiscus. also provide distribution map photographs, as well comments on morphological variation, anatomy habitat,...
• This is the first study on floral morphology and anatomy of Mesanthemum . The type petal fusion may be related to space constraints. M. radicans distinguishes by presence three vascular bundles in petals. Short outer stamens a step towards their loss Paepalanthoideae. Petal glands carpellodes show diagnostic features for Eriocaulaceae. genus Eriocaulaceae endemic Africa whose petals are free at base fused from middle region up apex. Detailed studies its scarce based only exsiccates, while...
Paepalanthus modestus, a new species of Eriocaulaceae with dimerous flowers, is described and illustrated. The placed in P. [unranked] Dimeri based on floral vegetative characters. A detailed comparison harleyi oxyphyllus given. hemispherical mature capitula, the relatively short involucral bracts slightly surpassing disc, vestiture leaves, scapes, parts distinguish modestus. Large populations occur rocky soils municipalities Alto Paraíso de Goiás Teresina Goiás, Brazil. Some these were...
Cyperaceae are a cosmopolitan Monocot family comprising about 5,700 species divided into two subfamilies: Cyperoideae and Mapanioideae. Within Mapanioideae, Mapania is the largest genus, with 90 species. Anatomical studies on Mapanioideae of great importance but still scarce. Here, anatomy roots, rhizomes scapes five Amazonian studied. The have types which differ anatomically: thick serving mainly for fixing, thin ones, nutrient absorption. Rhizomes show uniform anatomical pattern,...
We describe and illustrate Paepalanthus campanulatus, a new species of Eriocaulaceae from the Chapada dos Veadeiros National Park (Goiás, Brazil). The is known single population with many individuals growing under rocks in small caves, sometimes upside down attached to top cave. mainly distinguished by its usually tiny, unbranched stem bearing fasciculate inflorescence composed mostly glabrous, campanulate capitula surrounded whitish hyaline involucral bracts. Due very restricted...
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