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Leiothrix flagellaris is a small clonal plant that grows in sandy/rocky, nutrient poor soils in the rocky grasslands ("campos rupestres") of southeastern Brazil. In the rainy season most of their flower heads differentiate into small rosettes, produced by pseudovivipary, and connected to the mother-plant by flexible, elongated stalks that can reach up to 90cm. Most of these rosettes remain suspended over rocks or over the sparse herbaceous surrounding vegetation, while a few arch low enough to come into contact with the surrounding soil and take root. These suspended rosettes can reach diameters comparable to currently rooted and reproductively active rosettes produced during previous reproductive periods. As the rooted rosettes grow up, their potential to generate and disperse new pseudoviviparous rosettes increase rapidly. This unusual guerrilla strategy of L. flagellaris seems to congregate a suit of traits that promote a fast increase in photosynthetic area and improve recruitment, thereby helping to circumvent dispersal and establishment failures in its severe environment. Leiothrix flagellaris é uma pequena planta clonal que se desenvolve em solos arenosos/pedregosos e pobres em nutrientes dos campos rupestres do sudeste do Brasil. Durante a estação chuvosa, a maioria dos seus capítulos se transforma em rosetas geradas por pseudoviviparidade e que são ligadas à planta-mãe por hastes flexíveis que continuam seu crescimento e alcançam até cerca de 90cm. A maioria destas rosetas permanece suspensa sobre pedras ou sobre a rala vegetação herbácea local, enquanto que uma pequena fração toca o solo e se enraíza. Estas rosetas suspensas alcançam tamanhos comparáveis ao de rosetas enraizadas e produzidas nas estações reprodutivas precedentes e que já se reproduzem. À medida que as rosetas enraizadas crescem, seu potencial de gerar e dispersar novas rosetas pseudovivíparas aumenta rapidamente. A estratégia de crescimento guerilha de L. flagelaris parece reunir características que permitem rápido incremento da área fotossintética e elevam as chances de recrutamento, provavelmente reduzindo insucessos na dispersão e estabelecimento em seu severo ambiente

Clonal growth and dispersal potential of Leiothrix flagellaris Ruhland (Eriocaulaceae) in the rocky grasslands of Southeastern Brazil