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Gnetophyte)
The Gnetae are plants in the Division Gnetophyta. The Gnetophytes are often classified as gymnosperms, which are now thought to be a paraphyletic group of seed plants (spermatophytes). The Gnetophytes are different from other gymnosperms in having vessels as the flowering plants (Angiosperms or Magnoliophytes) do, and it is increasingly thought that Gnetophytes may be the group of spermatophytes most closely related to the flowering plants.
The Gnetophytes are divided into three groups:
- Gnetales
- Welwitschiales
- Ephedrales
The Gnetales consist of a single genus, Gnetum, which are mostly woody climbers in tropical forests. However, the most well-known member of this group, Gnetum gnemon, is a tree. The seeds produced are used to produce a crispy snack known as 'Keropok Belinjau' in Malaysia and Indonesia. The Malay name for this plant is 'belinjau'.
The Welwitschiales comprise only one species, Welwitschia mirabilis. It grows only in the deserts of Namibia. The plant is strange in having only two large strap-like leaves for all its life. These grow continuously from the base, and are usually tattered at the ends by flapping in the winds.
The Ephedrales consist of a single genus Ephedra, and are known as the jointfirs because they have long slender branches which bear tiny scale-like leaves at their nodes. Ephedra is reputed to have medicinal properties.
pl:Gniotowe
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