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See list of 18 genera in this family
  • 1a. Leaves 6–12 at each node, with entire blades; flowers with a single stamen borne at the summit of the ovary; calyx a minute rim around the apex of the ovary
  • 1b. Leaves 1 or 2 at each node (but crowded in the apical portion in Callitriche) or all basal, entire or toothed (in whorls of 3–6 in Veronicastrum, but then with serrate blades); flowers with 1–5 stamens, these not borne at the summit of the ovary; calyx absent or present and borne near the base of the ovary

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