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Gnetum is a
genus of gymnosperms, the sole
genus in the
family Gnetaceae within the Gnetophyta. They are
tropical evergreen trees,
shrubs and lianas....
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consists of some 70
species across the
three relict genera:
Gnetum (family
Gnetaceae),
Welwitschia (family Welwitschiaceae), and
Ephedra (family Ephedraceae)...
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Welwitschiales Family Welwitschiaceae:
Welwitschia Order Gnetales Family Gnetaceae:
Gnetum Order Ephedrales Family Ephedraceae:
Ephedra Subclass Pinidae...
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Ephedraceae Ephedra Gnetaceae Gnetum Welwitschiaceae Welwitschia...
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determination include the
cycad families Cycadaceae and Zamiaceae, Ginkgoaceae,
Gnetaceae and Podocarpaceae.
Whilst XY ****
determination is the most familiar, since...
- July 2023. Hooker,
Joseph Dalton (1863). "On Welwitschia, a new
Genus of
Gnetaceae".
Transactions of the
Linnean Society of London. 24 (1): 1–48. doi:10...
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Botanical Gardens, Kew. 2023.
Retrieved 13 June 2023. Markgraf, F. (1948). "
Gnetaceae".
Flora Malesiana. 4 (1): 336–347 – via
Naturalis Institutional Repository...
- Friedman,
William E. (1996). "Double
Fertilization in
Gnetum gnemon (
Gnetaceae): Its
Bearing on the
Evolution of ****ual
Reproduction within the Gnetales...
-
Ephedraceae Ephedra Gnetaceae Gnetum Welwitschiaceae Welwitschia...
- four orders;
Cycadeaceae (cycads)
Pinaceae (conifers)
Taxaceae (taxads)
Gnetaceae In contrast,
Bentham and
Hooker (1880)
included only
three orders in the...
