#class_Gnetopsida__Gnetopsida__Gnetophytina__subdivision_Gnetophytina__Gnetophyta  gymnospermous flowering plants; supposed link between conifers and angiosperms; in some systems classified as as class (Gnetopsida) and in others as a subdivision (Gnetophytina or Gnetophyta)
  supertype:  #class__clas  (biology) a taxonomic group containing one or more orders
  member of:  #class_Gymnospermae
  member:  #order_Gnetales__Gnetales  chiefly tropical or xerophytic woody plants; practically unknown as fossils but considered close to the ancestral line of angiosperms
     member:  #family_Gnetaceae__Gnetaceae  plants having small unisexual flowers and fleshy or winged fruit: in some classifications includes the genera Ephedra and Welwitschia as well as Gnetum
        member:  #genus_Gnetum  type genus of the Gnetaceae; small trees or shrubs usually with climbing jointed stems and terminal spikes of flowers with orange-red seeds clustered in rough cones
           member:  #gnetum__Gnetum_gnemon  small tropical tree with tiered branches and divaricate branchlets having broad glossy dark green leaves; exploited for its edible young leaves and seeds that provide a fine flour
     member:  #family_Ephedraceae__Ephedraceae  ephedras: in some classifications included in the Gnetaceae
        member:  #genus_Ephedra  type and sole genus of Ephedraceae: tropical and subtropical evergreen shrubby or creeping plants native to dry and inhospitable regions
           member:  #ephedra__joint_fir__jointfir  jointed and nearly leafless desert shrub having reduced scalelike leaves and reddish fleshy seeds
     member:  #family_Welwitschiaceae__Welwitschiaceae  in some classifications included in the Gnetaceae
        member:  #genus_Welwitschia__genus_Welwitchia  type and sole genus of Welwitschiaceae
           member:  #welwitschia__Welwitschia_mirabilis  curious plant of arid regions of southwestern Africa having a yard-high and yard-wide trunk like a turnip with a deep taproot and two large persistent woody straplike leaves growing from the base; living relic of a flora long disappeared; some may be 700-5000 years old

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