The eudicotyledons are a group of flowering plants , which includes a large part of the dicotyledons (= dicotyledons). According to the systematics of the Angiosperm Phylogeny Group , they are not a separate taxon and in terms of size they essentially correspond to the earlier class of three-furrow pollen dicotyledons .
The eudicotyledons have like the basal orders of the bedecktsamer two cotyledons . However, they lack their essential oils in idioblasts . The organs of the flower are in whorls . The pollen grains have three germinal furrows (are tricolpat) or are derived forms.
They themselves are divided into two large groups, the rosids and asterids, at the base of which there are some orders. Within the eudicotyledons these are:
The other eudicotyledons are often summarized in the so-called nuclear eudicotyledons, for example in APG III from 2009, but no longer in APG IV 2016, which is why they are no longer listed as a group here. The kernel eudicotyledons are characterized largely by five-fold flower covers, while the previous orders are quite variable here. They have tricolor pollen grains and contain ellagic acid .
The other groups of eudicotyledons are:
The eudicotyledon cladogram looks like this:
- Andreas Bresinsky , Christian Körner , Joachim W. Kadereit , Gunther Neuhaus , Uwe Sonnewald : Textbook of Botany . Founded by Eduard Strasburger . 36th edition. Spektrum Akademischer Verlag, Heidelberg 2008, ISBN 978-3-8274-1455-7 , p. 869 ff .
- The Angiosperm Phylogeny Group : An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG IV . Botanical Journal of the Linnean Society, 2016, Volume 181, pp. 1-20. doi : 10.1111 / boj.12385
- Angiosperm Phylogeny Group : An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III. In: Botanical Journal of the Linnean Society. Volume 161, No. 2, 2009, pp. 105-121, DOI: 10.1111 / j.1095-8339.2009.00996.x .