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Keys
  • Vascular plant groups
  • Club mosses
  • Ferns
  • Vegetative key to families
  • Gymnosperms
  • Flowering plants
  • Genera
  • Families

Polygonaceae

Stipules ocreous, i.e. sheathing the stem Polygonaceae
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Perianth segments 5, ± equal
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Flowers unisexual. Calyx succulent or membranous at fruiting stage Muehlenbeckia
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Flowers mostly bisexual. Calyx enlarged but not otherwise changed at fruiting stage