#placentation  arrangement of the ovules in the placenta and of the placentas in the ovary
  supertype:  #reproductive_structure  the parts of a plant involved in its reproduction
  subtype:  #apical_placentation  where one or few ovules develop at the top of a simple or compound ovary
  subtype:  #axile_placentation__axileplacentation  ovules are borne at or around the center of a compound ovary on an axis formed from joined septa
  subtype:  #basal_placentation__basalplacentation  where one or few ovules develop at the base of a simple or compound ovary
  subtype:  #free_central_placentation  where ovules develop on a central column in a compound ovary lacking septa or with septa at base only
  subtype:  #lamellate_placentation__lamellateplacentation  with ovules on thin extensions of the placentae into a compound ovary
  subtype:  #marginal_placentation__ventral_placentation__ventralplacentation  with ovules borne on the wall along the ventral suture of a simple ovary
  subtype:  #parietal_placentation  where ovules develop on the wall or slight outgrowths of the wall forming broken partitions within a compound ovary

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