30 genera,[22] prevalent in the Northern Hemisphere, and scattered in southern temperate zones[16]
Trees and shrubs with heavily scented resin. Taxodium is an aquatic tree genus with roots that form knees in some species. Many species provide timber that resists fungal and termite damage.[6][17]
1 genus,[25] scattered widely around Southeast Asia, northern Australia, and parts of India and Africa[26]
Unisexual trunked plants with leaf bases that periodically sprout new leaves. The raw plants are toxic for humans, but carefully prepared starches from some species are added to certain Asian dishes.[17][27]
1 genus,[29] in northern temperate regions, arid zones, and the Andes and other parts of South America[30]
Mostly unisexual shrubs and vines. Generally, photosynthesis occurs in the branches rather than the leaves. Many plants contain the medicinal compound ephedrine.[31][32]
Deciduous unisexual trees with fan-like leaves. Trees nearly identical to the modern Ginkgo are frequently found in the fossil record from the Mesozoic Era.[7]
Unisexual woody vines, and occasionally trees. At least two species are cultivated or gathered for food in Africa and Indonesia. Some plants provide fibre and wood.[17][37]
11 genera,[42] scattered widely in the Northern Hemisphere[43]
Evergreen and deciduous conifers, mostly trees and some shrubs, with heavily scented resin. Leaves are needle-shaped or linear. Pinus pinea is grown commercially for pine nuts. Many species are grown as ornamentals, especially for winter holidays.[8]
^Each family's formal name ends in the Latin suffix -aceae and is derived from the name of a genus that is or once was part of the family.[11]
^Some plants were named for naturalists (unless otherwise noted).
Citations
Some of POWO's data originally appeared in different databases. On the page for each family, these databases (if any) will appear under the "General information" tab.
Christenhusz, Maarten; Fay, Michael Francis; Chase, Mark Wayne (2017). Plants of the World: An Illustrated Encyclopedia of Vascular Plants. Chicago, Illinois: Kew Publishing and The University of Chicago Press. ISBN978-0-226-52292-0.
Coombes, Allen J. (2012). The A to Z of Plant Names: A Quick Reference Guide to 4000 Garden Plants. Portland, Oregon: Timber Press. ISBN978-1-60469-196-2.
IPNI (2022). "International Plant Names Index". London, Boston and Canberra: Royal Botanic Gardens, Kew; Harvard University Herbaria & Libraries; and the Australian National Botanic Gardens. Retrieved December 20, 2022.