Pleurotus ostreatus is a perennial swamp herb of Alismataceae, which is native to southeast China. The bulb of arrowhead is edible, rich in nutrition and high in value, and can be used for cooking, frying and starch making. Pleurotus ostreatus is a natural vegetable and can also be planted artificially. Pleurotus ostreatus is rich in vitamins, minerals, potassium, calcium, dietary fiber and protein.
Ci is also called arrowhead mushroom and arrowhead. Although it has the word "mushroom" in its name, it is not an edible fungus, but a freshwater plant in Sagittarius, which grows in shallow lakes, ponds and streams. Zi Qi is native to China, cultivated in northern and southern provinces, and widely distributed in tropical and temperate Asia, with about 20 varieties, which have been widely distributed all over the world.
morphological character
Perennial aquatic or swamp herbs. Rhizomes transverse, stout, terminal swelling or not. The leaves are arrow-shaped, and the length and width of leaves vary greatly. Usually, the top lobe is shorter than the side lobe, and the ratio is about 1: 1.2- 1.5. Sometimes the sidelobe is long, the top lobe shrinks with the sidelobe, or it doesn't; Petiole base gradually widens, sheath-like, margin membranous, with transverse veins, or inconspicuous. Scapes erect, erect, with a height of (15-)20-70 cm or more, usually stout. Inflorescence racemose or conical, 5-20 cm long.
Flower unisexuality; Perianth reflexed, outer perianth elliptic or broadly ovoid, 3-5 mm long and 2.5-3.5 mm wide; Inner tepals are white or light yellow, 6 6- 10/0mm long and 5-7mm wide, and the base contracts. Female flowers usually have 1-3 whorls. Pedicels are short and thick, carpels are mostly flat on both sides, and styles are inclined from the ventral side.
Male flowers are multi-whorled, pedicels are oblique, 0.5- 1.5 cm long, stamens are numerous, anthers are yellow, length 1- 1.5(-2) mm, filaments are different in length, about 0.5-3 mm, usually the outer whorls are short and gradually grow inward. Achene is squashed on both sides, about 4 mm long and 3 mm wide, obovate, winged, with irregular dorsal wings; The fruit beak is short and inclined from the ventral side. The seeds are brown. Flowering and fruiting period, May-65438+1October.