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Origin and divergence of Afro-Indian Picrodendraceae: linking pollen morphology, dispersal modes, fossil records, molecular dating and paleogeography

Grímsson, Friðgeir ; Graham, Shirley A ; Coiro, Mario ; Jacobs, Bonnie F ; Xafis, Alexandros ; Neumann, Frank H ; Scott, Louis ; Sakala, Jakub ; Currano, Ellen D ; Zetter, Reinhard

Grana, 2019, Vol.58(4), pp.227-275 [Periódico revisado por pares]

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  • Título:
    Origin and divergence of Afro-Indian Picrodendraceae: linking pollen morphology, dispersal modes, fossil records, molecular dating and paleogeography
  • Autor: Grímsson, Friðgeir ; Graham, Shirley A ; Coiro, Mario ; Jacobs, Bonnie F ; Xafis, Alexandros ; Neumann, Frank H ; Scott, Louis ; Sakala, Jakub ; Currano, Ellen D ; Zetter, Reinhard
  • Assuntos: Androstachys ; Aristogeitonia ; Hyaenanche ; Oldfieldia ; Piranhea ; Stachyandra ; Tetracoccus ; Voatamalo ; Autochory ; Myrmecochory
  • É parte de: Grana, 2019, Vol.58(4), pp.227-275
  • Descrição: The pantropical Picrodendraceae produce mostly spheroidal to slightly oblate, echinate pollen grains equipped with narrow circular to elliptic pori that can be hard to identify to family level in both extant and fossil material using light microscopy only. Fossil pollen of the family have been described from the Paleogene of America, Antarctica, Australia, New Zealand, and Europe, but until now none have been reported from Afro-India. Extant pollen described here include representatives from all recent Picrodendraceae genera naturally occurring in Africa and/or Madagascar and south India and selected closely related tropical American taxa. Our analyses, using combined light microscopy and scanning electron microscopy, show that pollen of the Afro-Indian genera encompass three morphological types: Type 1, comprising only ; Type 2, including , and ; Type 3, comprising the remaining two genera, and . Based on the pollen morphology presented here it is evident that some previous light microscopic...
  • Idioma: Inglês

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