The major tree genera are listed below by taxonomic family.

Flowering plants

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For classification of flowering plants, see APG II system.

Eudicots

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American sweetgum (Liquidambar styraciflua, Altingiaceae)

About 210 eudicot families include trees.[1][2]

Cryptocarya glaucescens (Lauraceae) in Royal National Park, Australia
European Beeches (Fagaceae) in the Sonian Forest, Belgium
Phellodendron amurense (Rutaceae)
Yellow maple (Sapindaceae) in fall
Common Teak (Tectona grandis, Verbenaceae) in Kolkata, India

Monocotyledons

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Coconut palm tree

About 10 Monocotyledon families include trees.[1][2]

Magnoliids

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Flowering magnolias

17 magnoliid families include trees.[1][2]

Conifers

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In the foreground Arolla Pines, in the background Norway Spruce

7 families, all of which include trees.[3]

Podocarpus totara (Podocarpaceae) in New Zealand

Ginkgos

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Only one species.

Cycads

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Both families of cycads include trees.[3]

Ferns

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Tree ferns are not true trees - their "trunks" are not composed of true secondary growth, but instead of roots and rhizomes[4].

See also

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References

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  1. 1 2 3 "Angiosperm Phylogeny Website". Missouri Botanical Garden.
  2. 1 2 3 Heywood, V.H., Brummitt, R.K., Culham, A. & Seberg, O. 2007: Flowering Plant Families of the World. Royal Botanic Gardens, Kew.
  3. 1 2 "The Gymnosperm Database".
  4. "Tree ferns". RHS Gardening. Retrieved 19 December 2025.