Sökning: "växtsystematik"

Visar resultat 1 - 5 av 37 avhandlingar innehållade ordet växtsystematik.

  1. 1. De rosis Svecanis tentamen primum, quod cons. exp. Fac. Med. Ups. proponunt Adamus Afzelius, ... et Carolus Stenhammar, ... O. Gothus. in auditorio Gust. maj. die. 14. Junii. 1804

    Författare :Adam Afzelius; Carl Stenhammar; Uppsala universitet; []
    Nyckelord :Roses; Rosor; Sverige; Växtsystematik;

    Sammanfattning : .... LÄS MER

  2. 2. Genera plantarum Guineensium revisa et aucta, quorum partem primam consensu exp. Fac. Med. Ups. proponunt Adamus Afzelius, ... et Nicol. Wilhelmus Elgenstierna, ... Sudermannus. in auditorio Gust. maj. die 9 Junii 1804

    Författare :Adam Afzelius; Niclas Wilhelm Elgenstierna; Adam Afzelius; Uppsala universitet; []
    Nyckelord :Plants; Plants; Växter; Guinea; Växtsystematik;

    Sammanfattning : .... LÄS MER

  3. 3. Systematics and biogeography of the South African Metalasia clade (Asteraceae-Gnaphalieae)

    Författare :Annika Bengtson; Per Ola Karis; Anthony Verboom; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Plant Systematics; växtsystematik;

    Sammanfattning : The Metalasia clade (Asteraceae–Gnaphalieae) consisting of the genera Metalasia, Atrichantha, Calotesta, Dolichothrix, Hydroidea, Lachnospermum, Phaenocoma, and Planea is endemic to South Africa with a main distribution within the Cape Floristic Region (CFR), a region known for its remarkable botanical diversity.The monophyly of the Metalasia clade, the relationships of its genera, and the circumscription of these as well as their position within the tribe Gnaphalieae is investigated using molecular data. LÄS MER

  4. 4. Pollen and pollination in Ephedra (Gnetales)

    Författare :Kristina Bolinder; Catarina Rydin; Johan Ehrlén; Michael S Zavada; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; aerodynamics; evolution; moonlight; pollination; pollen morphology; ultrastructure; Plant Systematics; växtsystematik;

    Sammanfattning : Ephedra (Gnetales) is a gymnosperm genus with a long evolutionary history; the first dispersed pollen grains with affinity to the group are known already from the Permian. This thesis focuses on the evolutionary history of the group and different aspects of its pollination mechanisms. LÄS MER

  5. 5. Pollination in Ephedra (Gnetales)

    Författare :Kristina Bolinder; Catarina Rydin; Jürg Schönenberger; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; växtsystematik; Plant Systematics;

    Sammanfattning : Pollination, i.e., the transport of male gametophytes to female gametophytes, can occur with biotic or abiotic vectors and is necessary for fertilization and completion of the lifecycle in all seed plants. LÄS MER