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Key to Ehretiaceae

Ehretiaceae

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1 Dwarf shrubs < 1 dm tall; inflorescences congested; fruits dry, separating into 4 ovoid nutlets shorter than 5 mm long; leaves with upper surface bulging between the veins
1 Trees or shrubs; inflorescences branched and usually not congested, rarely few-flowered; fruits drupaceous at least when young, rarely schizocarpous (Bourreria), then each mericarpid longer 5 mm; leaves planar.
  2 Calyx valvate in bud; fruits 6-15 mm long, with 4 triangular pyrenes with an additional sterile chamber and abaxially distinctly lamellate
  2 Calyx imbricate in bud; fruits 3-8 mm long, with 2-4 pyrenes, abaxially usually not lamellate