Rosales

Cloudberry from "Pictures for North Flora " C. A. M. Lindman, 1917 - 1926

The rose -like ( Rosales ) form an order within the angiosperms ( Magnoliopsida ).

Description

Since the present scope of the order comes through strong molecular genetic studies about, this order is morphologically very diverse.

There are in the order Rosales woody plants: trees and shrubs, a - perennial to perennial herbaceous plants. But there is no water plants and no parasites in that order. The leaves are often divided. There are always Stipules present.

The flowers are usually fünfzählig, often androgynous and radial symmetry. Originally a flower cup ( hypanthium ) is available, but this is absent in some families. The stamens are originally five, but especially in the Rosaceae by secondary polyandry in variety available. The number of carpels per flower is very variable: from very many to a single anything is possible. There are animal -pollinated and wind-pollinated taxa. It is more than a little endosperm present.

System

The Rosales are within the euro Siden I, the sister group of ( fagales Cucurbitales ). It includes the following families:

  • Barbeyaceae
  • Hemp plants ( Cannabaceae )
  • Dirachmaceae
  • Oil pasture plants ( Elaeagnaceae )
  • Mulberry family ( Moraceae )
  • Buckthorn family ( Rhamnaceae )
  • Rose family ( Rosaceae )
  • Elm Family ( Ulmaceae )
  • Nettle family ( Urticaceae )

After evaluation of morphological and molecular genetic analyzes are obtained for the new order of the Rosales family relationships (see also Angiosperm Phylogeny Group and Sytsma et al. 2002). It was found that the six or seven families and 2600 species of the earlier order Urticales be included within the order Rosales and the family boundaries have shifted somewhat.

This results in the following cladogram:

Rosaceae

Barbeyaceae

Dirachmaceae

Rhamnaceae

Elaeagnaceae

Ulmaceae

Cannabaceae

Moraceae

Urticaceae

Swell

  • The order of Rosales in APWebsite. (English )
  • Kenneth J. Sytsma, Jeffery Morawetz, J. Chris Pires, Molly Nepokroeff, Elena Conti, Michelle Zjhra, Jocelyn C. Hall, Mark W. Chase: Urticalean rosids: circumscription, Rosid ancestry, and phylogenetics based on rbcL, trnL -F, and ndhF sequences. In: American Journal of Botany. Volume 89, No. 9, 2002, pp. 1531-1546, doi: 10.3732/ajb.89.9.1531.
  • 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, Rosales. Pp. 888-891.
Jan Svatopluk Presl Digital Object Identifier
693173
de