Search for dissertations about: "Systematic Botany"

Showing result 1 - 5 of 42 swedish dissertations containing the words Systematic Botany.

  2. 1. Morphological and Molecular Phylogenetic Studies in Neotropical Gentianaceae

    Author : Lena Struwe; Pamela S Soltis; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; systematisk botanik; Systematic Botany;

    Abstract : The Gentianaceae of the Neotropics are a diverse taxonomic group representing several evolutionary lineages. The phylogenetic relationships of neotropical gentians are discussed based on cladistic analyses of morphological, trnL intron, and ITS 1 sequence data. READ MORE

  4. 2. Phylogeny and biogeography of Gunnera

    Author : Livia Wanntorp; Lennart Andersson; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Växter; fylogeni; Tvåhjärtbladiga; Magnoliopsida; systematisk botanik; Systematic Botany;

    Abstract : The angiosperm genus Gunnera consists of 30-40 species mainly distributed in Africa, New Zealand, Tasmania, South America, the Malay Archipelago and Hawaii. Because of its distribution in almost all parts of the Southern Hemisphere and to its 90 millions year's history on Earth, Gunnera is especially interesting for its biogeography. READ MORE

  5. 3. Evolution of Lycopodiaceae (Lycopsida) : Relationships and Patterns of Diversification

    Author : Niklas Wikström; Anders Tehler; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; systematisk botanik; Systematic Botany;

    Abstract : A series of phylogenetic analyses using nucleotide sequence data resolves many aspects of the relationships in a group of land plants that until now have received comparatively little attention, the homosporous lycopsids or Lycopodiaceae. Although the group has evolved as an isolated lineage ever since the Late Devonian (more than 470 Myr ago), little is known about how modern species diversity relate to this ancient history. READ MORE

  6. 4. Phylogeny of Selaginellaceae

    Author : Petra Korall; Birgitta Bremer; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Plant physiology; Växtfysiologi; fysiologisk botanik; Physiological Botany;

    Abstract : The phylogeny of Selaginellaceae, a small, but historically important family of heterosporous lycopods, has been the focus of this thesis. The approximately 700 extant species are herbaceous and distributed all over the world, with most species in the tropics and subtropics. READ MORE

  7. 5. Systematics and phylogenetics of the Blepharispermum group (Asteraceae - Heliantheae)

    Author : Torsten Eriksson; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fylogeni;

    Abstract : This thesis treats the Blepharispermum group which comprises the three genera Athroisma DC., Blepharispermum Wight ex DC., and Leucoblepharis Arnott. The systematic position of the group within the Asteraceae is discussed, and a transfer is proposed from the tribe Inuleae, where it was placed earlier, to the Heliantheae. READ MORE