蓼花

liǎohuā
  1. (botany) knotweed flower; smartweed flower (the (usually pink) flower of various plants in the family Polygonaceae, especially in the genera Polygonum and Persicaria)
  2. knotweed flower; smartweed flower (the (usually pink) flower of various plants in the family Polygonaceae, especially in the genera Polygonum and Persicaria)

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