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Which three genera belong to the gnetophytes?
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Gymnosperm
Pine cone and exposed seeds of the pinyon pine (Pinus edulis). Pinyon pines are gymnosperms and bear their edible seeds, known as pine nuts, in protective cones instead of fruit.
The division Gnetophyta is a group of gymnospermous vascular plants represented by three living genera:1
- Ephedra: A genus consisting of approximately 65 species of shrubs, small trees, or vinelike plants found in dry and cool regions.123
- Gnetum: A genus containing about 30 species, most of which are lianas native to tropical rainforests.123
- Welwitschia: A genus represented by a single, highly unusual species, Welwitschia mirabilis, which is restricted to the Namib Desert.123