Amborella

Amborella trichopoda

Amborella trichopoda is the only species in the monotypic genus Amborella and the mono- generic family Amborellaceae. She is also the only species of the order of Amborellales, which represents the order of the basal angiosperms ( Magnoliopsida ).

  • 3.1 Notes and references

Description

Vegetative characteristics

Amborella trichopoda is a small evergreen shrub or tree-like woody plant. As a major feature within the angiosperms, it has no tracheae. Oil cells also lacking. On the branches the leaves are arranged opposite one another and spiral up two lines. The simple leaves have smooth, lobed or serrated leaf margins. Stipules absent.

Generative features

Amborella trichopoda is dioecious getrenntgeschlechtig ( dioecious ). In zymösen inflorescences some flowers are summarized. With the small (less than 5 mm), acyclic (ie not in petal circles indented ) flowers the perianth is undifferentiated. Each flower contains five to eight in female, in male eleven spirally arranged bracts ( tepals ). In the male flowers 10 to 14 fertile stamens are included, the leaf-like look. The pollen grains are sulcat. In the female flowers one to a few staminodes may be present and there are five to eight free, upper permanent fruit leaves that secrete a sticky liquid. There is in each flower a gradual transition from deciduous leaf-like bracts to kronblattartigen bloom cladding, stamens and carpels.

There shall be collecting fruits that are composed of at Ripe red expectant seeded stone fruits.

The chromosome number is 2n = 26

Occurrence

Amborella trichopoda is found only in New Caledonia. It thrives only in the understory of moist, shady mountain forests.

Swell

  • The order of Amborellales in APWebsite. (Section Description and systematics)
  • Description of the family of Amborellaceae at DELTA. (Section Description and systematics)
  • Www.amborella.org/ (Section Description and systematics)
  • Andreas Bresinsky, Christian Körner, Joachim W. Kadereit, Gunther Neuhaus, Uwe Sonnewald: Strasburger. Textbook of Botany. Founded by E. Strasburger. 36th edition. Spektrum Akademischer Verlag, Heidelberg 2008, ISBN 978-3-8274-1455-7, p 847
Henri Ernest Baillon Vessel element Compound fruit Drupe Digital Object Identifier Eduard Strasburger
55335
de