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See list of 2 genera in this family

Reference: Crow and Hellquist (1983).

  • 1a. Perianth 3-merous; flowers with 3 stamens and 3 carpels; leaves alternate, the blades of the emersed ones foliaceous
  • 1b. Perianth 4-merous; flowers with 4 or 8 stamens and 4 carpels; leaves opposite or alternate or both on the same plant, the blades of the emersed ones commonly reduced and bract-like

 Show photos of:   Each photo represents one genus in this family.