Emerging phylogeographical patterns of plants and terrestrial vertebrates from Patagonia
Phylogeographical inferences, applied in a comparative framework across multiple species at a regional scale, provide the means for detecting regional and landscape-level patterns of biodiversity,… Expand
Phylogeography and palaeodistribution modelling in the Patagonian steppe: the case of Mulinum spinosum (Apiaceae)
Aim An integrative study of the endemic, yet ubiquitous, Patagonian shrub Mulinum spinosum (Apiaceae) was performed: (1) to assess the historical processes that influenced its geographical pattern… Expand
Inflorescence, spikelet, and floral development in Panicum maximum and Urochloa plantaginea (Poaceae).
Inflorescence development in Panicum maximum and Urochloa plantaginea was comparatively studied with scanning electron and light microscopy to test the transfer of P. maximum to Urochloa and to look… Expand
Diversification of inflorescence development in the PCK clade (Poaceae: Panicoideae: Paniceae).
- R. Reinheimer, F. Zuloaga, A. Vegetti, R. Pozner
- Biology, Medicine
- American journal of botany
- 1 March 2009
In grasses, inflorescence diversification and its correlation with species evolution are intriguing and not well understood. Part of this problem lies in our lack of comprehension about the… Expand
Structure and development of the style base in Abildgaardia, Bulbostylis, and Fimbristylis (Cyperaceae, Cyperoideae, Abildgaardieae)
Abstract The Abildgaardieae tribe within the family Cyperaceae comprises six or seven genera, among which Abildgaardia , Bulbostylis and Fimbristylis pose a challenge regarding their morphological… Expand
Approach to the early sporangial development in angiosperms considering meiosis control and cellular differentiation
- R. Pozner
- Plant Systematics and Evolution
- 1 December 2001
Abstract. Applying current data on cell differentia- tion and meiosis control to the early sporangial development in angiosperms, a strict relationship between cell lineage and its differentiation… Expand
El androsporangio, la androsporogenesis y la androgametogenesis de Cayaponia citrullifolia, C. bonariensis y Cucurbitelia duriaei (Cucurbitaceae)
- R. Pozner
Pozner, R. 1993. Androsporangium, androsporogenesis and androgametogenesis in Cayaponia citrullifolia, C. bonariensis and Cucurbitella duriaei (Cueurbitaeeae). Darwiniana 32: 109-123. This paper… Expand
Phylogeography and palaeodistribution modelling of Nassauvia subgenus Strongyloma (Asteraceae): exploring phylogeographical scenarios in the Patagonian steppe
The Patagonian steppe is an immense, cold, arid region, yet phylogeographically understudied. Nassauvia subgen. Strongyloma is a characteristic element of the steppe, exhibiting a continuum of… Expand
Allotetraploids in Patagonia with Affinities to Western North American Diploids: Did Dispersal or Genome Doubling Occur First?
Amphitropical disjunct distributions between western North America and western South America have intrigued botanists for over a century. Here, specific examples of migration and speciation are… Expand
Multiple origins of congested inflorescences in Cyperus s.s. (Cyperaceae): developmental and structural evidence.
PREMISE OF THE STUDY The understanding of homoplasic structures becomes more relevant when they are complex and define large angiosperm taxa. Inflorescence architecture usually fulfills both… Expand