Purple duckweed (also known as purple bamboo plum, purple leaf grass, purple golden grass, etc.) is a perennial herbaceous plant of the Commelina family. The plant height is 20-30 cm, and the leaves are lanceolate and slightly slightly Curly, purple-red, finely tomentose. The stems are purple-brown, upright at first, and become semi-vine after elongation, taking on a prostrate shape. It blooms in spring and summer, and the flowers are pink in color. They bloom in large quantities under conditions of sufficient sunshine.