Salicaceae

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  Populus

  1a. Winter buds covered by more than one scale; aments drooping; flowers subtended by a cup-like disk, without basal glands, each staminate flower with 5–80 stamens
• Choose this genus
  Salix

  1b. Winter buds covered by 1 scale; aments erect to spreading [Figs. 887,893]; flowers not subtended by a disk, with 1–4 basal glands, each staminate flower with 1–8 stamens

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