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Key to Salicornia

Chenopodiaceae

Salicornia

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(c) Horn, Jay
1 Perennial from a horizontal rhizome; central flower (of each group of 3) slightly or not at all longer than the 2 lateral flowers; [subgenus Amerocornia]
1 Annual from a taproot; central flower (of each group of 3) considerably longer than the 2 lateral flowers; [subgenus Salicornia]
  2 Scale-leaves below the spikes mucronate; spikes mostly 4.5-6 mm in diameter
  2 Scale-leaves below the spike obtuse to slightly acute; spikes mostly 1.5-4.5 mm in diameter