Copper money grass, scientific name: Lentinus edodes grass, small leaves, 0.5 ~ 2.5 cm long, palmately lobed, fragrant with celery when rubbed, which is called "penny grass" by the people and has similar effects. The plant height is 5 ~ 15 cm, and the top of the stem is brown. Submerged leaves have a long-handled round shield shape, 2 ~ 4 cm in diameter, wavy edges, grass green and bisexual flowers; Umbellies, small white and pink flowers, schizocarpy; The flowering period is from June to August. Stems are slender and take root at nodes. Leaves rounded or peltate, abaxially densely T-hairy, entire; Corolla bell-shaped yellow, flowering in April, bearing fruit in July, and capsule nearly spherical. It is an excellent ground cover plant with strong ability of sowing, branching and propagation. Copper money grass is strong, easy to plant, fast to reproduce and amphibious. The stems are well developed, and the roots and leaves come out from the internodes. The leaves are round, shield-shaped, with long stalks and wavy edges, and small yellow-green flowers bloom in summer and autumn. Its stem nodes are obvious, and each node has a leaf, which can be extended all the time. Its underground transverse stem grows at an amazing speed, and it spreads wherever it goes. It is a beautiful and easy-to-grow aquatic plant.

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