If you guess this riddle correctly, you can deduce it directly according to the characteristics of the plant itself. The riddle "White flowers can be used as dyes" means that the white flowers of this plant can be used as dyes. According to the meaning of the riddle, it is easy to know that this plant is Sophora japonica, because Sophora japonica is white and can also be used as a dye, so the answer is Sophora japonica.
Sophora japonica, also known as Sophora japonica, is tall and has pinnate compound leaves similar to Robinia pseudoacacia. Flowers are white and can be used as dyes. Flowering in late summer, different from other tree species, is an important nectar source plant. Panicle terminal, usually pyramidal, up to 30 cm long.
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