Sökning: "Else Marie Friis"

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1. 1. The Gnetales: fossils and phylogenies

   Författare :Catarina Rydin; Else Marie Friis; Mari Källersjö; Ulf Swensson; Susana Magallón; Stockholms universitet; []
   Nyckelord :seed plants; Gnetales; Ephedra; fossils; DNA; phylogeny; morphology;

   Sammanfattning : The phylogeny of seed plants has been debated for more than a hundred years and is still not fully understood. Morphological analyses have consistently resulted in a phylogeny in which cycads are the earliest diverging seed plants, and Gnetales and angiosperms are sisters. Molecular data has, however, rarely supported this result. LÄS MER