It is a perennial emergent aquatic herb. With rhizomes, the aboveground stems can produce 2-3 tillers. A tiller cluster is formed, the stems are erect and stout, and there are adventitious roots at the base. After the main stems and tillers enter reproductive growth, if there is smut fungus parasitic on the base of Zizania latifolia, they cannot grow normally, forming an oval or nearly round fleshy stem. Leaf blade is flat, long lanceolate, 30- 100 cm long and about 3 cm wide. The apex is awn-shaped, the base is slightly narrowed or narrowed, the upper and lower edges are generally rough, the lower surface is smooth, and the midrib is convex on the back. Leaf sheaths are long and thick, embracing each other to form a "false stem". In autumn and winter, the panicle is large, 30-60 cm long, multi-branched, rising or spreading. Caryophylls are cylindrical. Often cultivated as vegetables. Plants whose stems are not parasitized by fungi are called wild Zizania latifolia, which is also called male Zizania latifolia and Zizania latifolia. There are wild plants in Shanghai. Zizania latifolia can be used for greening arrangement in shallow water area of garden water.

Morphological characteristics of Allium fistulosum;

Allium fistulosum is a perennial aquatic perennial plant and waterscape plant, with a plant height of 1~2mi and a straight stem. The stem of Allium fistulosum is round and hollow in the middle. Because the stem is too long, it usually hangs slightly downwards. In natural environment, it grows in shallow water areas such as swamps, ditches, ponds and lakesides. It is distributed in Jiangsu, Shandong, Northeast China, Shanxi, Henan, Zhejiang, Anhui and other places in China, and it is very widely used in waterscape gardens. Creeping rhizomes have many fibrous roots, the stalks are tall and round, the color is green, there are 3~5 leaf tips at the base, the sheath is 40cm long, the top leaf tip has leaves, and the other leaf tips have no leaves. Linear leaf length of Allium fistulosum 1.5~ 1 1cm. 2~3 spikelets are clustered or solitary at the top of the stem, with a length of 1cm and a width of about 0.2cm. They are multi-flowered and bloom around July every year, with brown or purple-brown flowers. ? The garden use of Allium fistulosum is mainly planted at the water's edge to beautify the monotonous shore. Its tall plant type and dense long-term potential energy quickly cover the exposed soil and rocks, and at the same time effectively reduce the water quality nutrients, which has a great role in protecting the environment.