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The sole genus, with 28 species, of the pantropical gymnosperm family Gnetaceae, of which 26 species are woody climbers with gouty nodes, and 2 are trees. They are dioecious, and often cauliflorous. The seeds are naked, borne on racemes, and edible in many species, although some have irritant, hairy tissues.

Subjects: Plant Sciences and Forestry.

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