Fagales
From Wikipedia, the free encyclopedia
| Fagales | |
|---|---|
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| Fagus sylvatica | |
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiospermae |
| (unranked): | Eudicots |
| Order: | Fagales Engler |
| Families | |
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See text. |
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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:
- Nothofagaceae - Southern beech family (Nothofagus, Fucospora, Brassospora, Lophozonia)
- Fagaceae - Beech family (Fagus, Quercus, Castanea, Castanopsis, Lithocarpus, Trigonobalanus, Colombobalanus)
- Juglandaceae - Walnut family (Juglans, Carya, Cyclocarya, Alfaroa, Engelhardia, Oreomunnea, Platycarya)
- Myricaceae - Bayberry family (Myrica, Canacomyrica, Morella, Comptonia)
- Rhoipteleaceae - Rhoiptelea family (Rhoiptelea)
- Ticodendraceae - Ticodendron family (Ticodendron)
- Betulaceae - Birch family (Betula, Alnus, Carpinus, Corylus, Ostrya, Ostryopsis)
- Casuarinaceae - She-oak family (Casuarina, Gymnostoma, Ceuthostoma, Allocasuarina)
Older texts such as the Kew checklist (see external link below) which followed the Cronquist system only included four families (Betulaceae, Corylaceae, Fagaceae, Ticodendraceae; Corylaceae now being included within Betulaceae). 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 that the Myricales, so defined, are paraphyletic to the other two groups.
