Fagales

The Fagales are an order of flowering plants, including some of the best-known trees. The order name is derived from genus Fagus, beeches. They belong among the rosid group of dicotyledons. The families and genera currently included are as follows:

Fagales
Fagus sylvatica
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Clade: Fabids
Order: Fagales
Engl.[1]
Families
Synonyms
  • Betulales Martius
  • Carpinales Döll
  • Casuarinales Berchtold & J. Presl
  • Casuarinanae Reveal & Doweld
  • Corylales Dumortier
  • Faganae Takhtajan
  • Juglandales Berchtold & J. Presl
  • Juglandanae Reveal
  • Juglandineae Thorne & Reveal
  • Myricales Martius
  • Myricineae Thorne & Reveal
  • Nothofagales Doweld
  • Quercales Burnett
  • Rhoipteleales Reveal

The older Cronquist system only included four families (Betulaceae, Corylaceae, Fagaceae, Ticodendraceae; Corylaceae now being included within Betulaceae); this arrangement is followed by, for example, the World Checklist of selected plant families.[2] The other families were split into three different orders, placed among the Hamamelidae. The Casuarinales comprised the single family Casuarinaceae, the Juglandales comprised the Juglandaceae and Rhoipteleaceae, and the Myricales comprised the remaining forms (plus Balanops). The change is due to studies suggesting the Myricales, so defined, are paraphyletic to the other two groups.

Systematics

Modern molecular phylogenetics suggest the following relationships:[1]

 
 

Cucurbitales (outgroup)

 
Fagales
 

Nothofagaceae

 
 
 

Fagaceae

 
 
 
 

Myricaceae

 
 

Juglandaceae

 
 
 
 
 

Ticodendraceae

 
 

Betulaceae

 
 
 

Casuarinaceae

 
 
 
 
 
 

References
  1. Angiosperm Phylogeny Group (2009). "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III". Botanical Journal of the Linnean Society. 161 (2): 105–121. doi:10.1111/j.1095-8339.2009.00996.x. Archived from the original (PDF) on 2017-05-25. Retrieved 2013-07-06.
  2. "Royal Botanic Gardens, Kew: Databases and Publications". Archived from the original on 3 February 2004. Retrieved 16 October 2018.
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