Ericales

Ericales
Scientific classification
Kingdom:Plantae
Division:Magnoliophyta
Class:Magnoliopsida
Order:Ericales Dumort. (1829)
Families

See text

The Ericales are a large and diverse order of dicotyledons. The order is represented with many various life forms, starting from trees and bushes, to lianas and herbaceous plants. Together with ordinary autophytic plants, the Ericales include chlorophyll-deficient mycotrophic plants (e. g. Sarcodes sanguinea) and carnivorous plants (e. g. genus Sarracenia).

Many species have five petals, often grown together.

Mycorrhiza is an interesting property, frequently associated with the Ericales. Indeed, the symbiosis with root fungi is quite common among the order representatives, and there are even three kinds of it which can be found exclusively among Ericales (namely, ericoid, arbutoid and monotropoid mycorrhiza). In additional, some families among the order are notable for their exceptional ability to accumulate aluminium (Jansen et al., 2004).

Ericales are a cosmopolitic order. Areas of distribution of families vary largely - while some are restricted to tropics, others exist mainly in arctic or temperate regions. The entire order contains over 8000 species, of which the Ericaceae account for 2000-4000 species (by various estimates).

Economical importance

Doubtlessly, the most important plant in the order is the tea (Camellia sinensis) from the Theaceae family. The order also includes some edible fruits, namely kiwi fruit (Actinidia deliciosa), persimmon (genus Diospyros) and some tropical fruits. Many Ericales species are cultivated for their showy flowers.

Classification

The following families are typical of newer classifications:

These make up a basal group of asterids. Under the older Cronquist system, the Ericales included a smaller group of plants, which were placed among the Dileniidae:

References

  • B. C. J. du Mortier (1829). Analyse des Familles de Plantes : avec l'indication des principaux genres qui s'y rattachent, 28. Imprimerie de J. Casterman, Tournay.
  • S. Jansen, T. Watanabe, P. Caris, K. Geuten, F. Lens, N. Pyck, E. Smets (2004). The Distribution and Phylogeny of Aluminium Accumulating Plants in the Ericales. Plant Biology (Stuttgart) 6, 498-505. Thieme, Stuttgart. (Available online: DOI (http://dx.doi.org/10.1055/s-2004-820980) | Abstract (http://www.thieme-connect.com/ejournals/abstract/plantbiology/doi/10.1055/s-2004-820980))
  • W. S. Judd, C. S. Campbell, E. A. Kellogg, P. F. Stevens, M. J. Donoghue (2002). Plant Systematics: A Phylogenetic Approach, 2nd edition. pp. 425-436 (Ericales). Sinauer Associates, Sunderland, Massachusets. ISBN 0878934030.
  • E. Smets, N. Pyck (Feb 2003). Ericales (Rhododendron). In: Nature Encyclopedia of Life Sciences. Nature Publishing Group, London. (Available online: ELS Site (http://www.els.net))da:Lyng-ordenen (Ericales)

de:Heidekrautartige es:Ericales fr:Ericales he:אברשאים nl:Ericales no:Ericales fi:Ericales

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