Aster-like
The division of living beings into systematics is a continuous subject of research. Different systematic classifications exist side by side and one after the other. The taxon treated here has become obsolete due to new research or is not part of the group systematics presented in the German-language Wikipedia.
The aster-like (Asteridae) form in some systematics an extensive subclass of the three-furrow pollen dicotyledonous (Rosopsida). They largely correspond to the asterids .
description
The petals are fused with them ( sympetalie ). Associated with this, there are other derived characteristics, such as tetracyclic flowers (there are four and not five petal circles); because it only a episepalen, so over the sepals standing stamen circle are; Polyandry never occurs; the carpels are mostly reduced to two, the ovule is tenuinucellate and has an integument ( unitegmisch ). These are tendencies for the formation of bogus flowers ( Pseudanthien ) zygomorphen flowers, adhesions of the anthers and permanent ovary .
Systematics
The aster-like can be divided into the following 14 orders :
basal groups
- Dogwood-like (Cornales)
- Heather-like (Ericales)
Euasterids I
- no inclusion in an order:
- Boraginaceae (Boraginaceae), Icacinaceae , Oncothecaceae , Vahliaceae
- Garryales
- Enzianartige (Gentianales)
- Mint family (Lamiales)
- Nightshade (Solanales)
Euasterids II
- no inclusion in an order:
- Holly (aquifoliales)
- Umbelliferae (Apiales)
- Astern-like (Asterales)
- Cardigans (Dipsacales)
swell
- Botany Online, Asteridae
- Peter Sitte , Elmar Weiler , Joachim W. Kadereit , Andreas Bresinsky , Christian Körner : Textbook of botany for universities . Founded by Eduard Strasburger . 35th edition. Spektrum Akademischer Verlag, Heidelberg 2002, ISBN 3-8274-1010-X , p. 845 .