Potamogeton crispus, also known as shrimp algae, shrimp grass and wheat yellow grass. Potatoes. Potatoes. Monocotyledon plants. Latin name: Potamogeton crispus. Submerged perennial herbs. Born in ponds, lakes, streams, mostly static ponds or ditches, the water body is mostly slightly acidic to neutral. The stems are oblate and branched. The leaves are lanceolate, the apex is obtuse and rounded, and the leaf margin is wavy and serrated. Leaves stipitate, leafless. Inflorescence spicate. It germinates in autumn, grows in winter and spring, blooms and bears fruit in April-May, and gradually declines after June in summer, and scales (winter buds) are formed at the same time to survive the uncomfortable environment. Winter buds are hard, with teeth on the edges, and are shaped like pinecones. When the water temperature is suitable, they begin to germinate and grow. Leaf strips, sessile. The flowering and fruiting period is from April to July. It can be used as green manure and purified water.