Asteridae

The aster -like ( unranked ) form a large subclass of three furrows pollen dicotyledons ( Rosopsida ) in some classifications. They are similar to the asteroids.

Description

The petals are fused with them ( Sympetalie ). This coupled occur even more derived features, such as tetracyclic flowers ( so there are four and not five petal circles present); because there is only one episepalen, so standing on the sepals stamen circle; Polyandry never occurs; the carpels are usually reduced to two, the ovule is tenuinucellat and has an integument ( unitegmisch ). These tendencies in the formation of pseudo- flowers ( Pseudanthien ), zygomorphic flowers, adhesions of the anthers and ovary.

System

The aster -like can be grouped into the following 14 systems:

Basal groups

  • Dogwood Family ( Cornales )
  • Heather -behaved ( Ericales )

I Euasterids

  • No inclusion in an order: Borage Family ( Boraginaceae ), Icacinaceae, Oncothecaceae, Vahliaceae

Euasterids II

Swell

  • Botany online, unranked
  • Peter Sitte, Elmar Weiler, Joachim W. Kadereit, Andreas Bresinsky, Christian Körner: textbook of botany for colleges. Founded by Eduard Strasburger. 35th edition. Spektrum Akademischer Verlag, Heidelberg 2002, ISBN 3-8274-1010- X, pp. 845
Organism Pseudanthium Ovary (botany) Garryales Gentianales Solanales
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