Scientific name: Sagittaria sagittifolia Aliases: Cixi, Swallowtail, White Chestnut Family is: Alismataceae, Sagittaria Category: Perennial emergent plants Morphological characteristics: Up to 12cm, underground rhizomes, bulbs at the apex, thin film scales on surface of bulbs. Longer end buds on the ends. The leaves are borne at the base and the water emerges into a truncated shape. The leaves are arrow-shaped, and the petiole is long and hollow. The submerged leaves are linear, the stems are erect, more than solitary, and the upper part is born with three rounds of panicle-like panicles. The florets are unisexual or homogeneous, white, and not easy to bear. Flowering from July to September. There are 25 species in this genus and about 5 to 6 species in China. Origin distribution: Originating in China, the provinces of north and south have been cultivated and are widely distributed in tropical and temperate regions of Asia. There are also cultivated in Europe and the United States. Growth habits: It has strong adaptability. It can grow on shallow lands with various water surfaces on the land. However, it requires plenty of sunshine, mild climate, and relatively leeward environment. It requires fertile soil, but it grows on clay that is not too deep. Wind and rain easily cause the stems and stems to break off and the growth of bulbs is hindered Watch application: Sagittaria is unique in its leaf shape and strong in adaptability. It can be used as a greenery material for watersides and shores, or as a potted plant. Sacrifice mushroom has many aliases since ancient times, and the most common one is called "mushroom". Li Shizhen is included in the Compendium of Chinese Materia Medica. The Shiitake mushroom is born with 12 seeds, which means that the Shiitake mushroom has a total of 12 fruits; in fact, there are 15 Shigo mushrooms with more than one person, and no less than 6 people with less than one mushroom. . Sagittaria is an aquatic herb that is as large as an apricot and as small as a millet. Now the finest variety is the "white flesh mushroom" that was born in Guangdong. Its advantage is that it is rich in starch and it is suitable for long-term storage. It was once called "relief herb." Sagittarius is rich in starch, protein, fat, vitamins, calcium and phosphorus. Can detoxify cooling blood, stomach and cough. The mushroom has a long history of planting in Dashi Town and is a traditional native product of Dashi Town. Sagittaria is a perennial herb. It is cultivated once a year and must be rooted. Nutrients are accumulated at the end of the stolon, and the bulb is formed by hypertrophy. Bulbous flat garden-shaped, relatively solid meat, skin and meat are yellow-white, rich in starch, slightly bitter, unique flavor, is the best variety during the Spring Festival Festival. As the brand of Panyu Agriculture, Da Shi Shi Xuan has established a production base through the government's project support, and the cultivation level and product quality have been gradually improved, and the brand effect has been continuously expanding and sold at home and abroad. At present, Sagittaria is mainly distributed in Shaxi, Luoxi, Daxing and Dongxiang villages in Dashi Town. In recent years, the planting area has reached 1200 mu each year, and the average yield per mu is 1,600 kg. The total annual output is over 2,000 tons. Shishiji mushroom was planted in low-lying and fertile paddy fields. Because of the good cultivation conditions, the individual mushrooms were produced in large quantities and the quality was excellent. It is planted in early August each year and harvested from the end of December to the following February.