Where is the latest origin of Laver?

Porphyra yezoensis, porphyra yezoensis and porphyra yezoensis.

Where is the origin of Laver?

The producing areas of porphyra yezoensis in China are distributed in coastal areas. Porphyra haitanensis is mainly cultured in Fujian and southern Zhejiang, while porphyra yezoensis is mainly cultivated in the north. Xiapu County, the hometown of porphyra yezoensis, is one of the oldest counties in Fujian, and it is also the earliest area in southern China to cultivate kelp and porphyra. As early as the Yuan Dynasty, Xiapu people have a record of cultivating porphyra yezoensis and have the national geographical indication of "Xiapu Laver".

Is porphyra a plant?

Porphyra is not a plant. Porphyra yezoensis is often mistaken for a plant because it is capable of photosynthesis, but biologists generally believe that it is not a real plant because it has no real duct tissue (xylem and phloem), unlike aquatic plants. In addition, there are several kinds of cyanide bacteria related to seaweed, large seaweed mostly grow in cold areas, artificially cultivated species are porphyra yezoensis and porphyra haitanensis.

Common species of porphyra

1. Porphyra haitanensis: porphyra haitanensis is a kind of artificially cultivated seaweed endemic to China. The algal body is dark purple-green and brownish, lanceolate, sub-ovate or long-ovate, the base is heart-shaped, round or cuneate, and the edge is slightly wrinkled or absent. Sparsely serrated. Porphyra haitanensis in China has a long history, which was first named after Haitan Island, the main island of Pingtan County, Fujian Province. It was listed as a tribute as early as the third year of Taiping and rejuvenation of the country in the Song Dynasty. At present, it is often planted along the coast of Fujian and southern Zhejiang.

2. Porphyra yezoensis: the algae of porphyra yezoensis are bright purplish red or slightly turquoise, ovate or long ovate, generally more than 12cm high, the base is round or heart-shaped, the edge is wrinkled, and the cells are neatly arranged, smooth and unserrated. The pigment body is star-shaped, located in the center, and the basal cells extend into egg-shaped or long rod-shaped, monoecious, leaf-like bodies can form single spores for vegetative reproduction. It is a common species along the north coast of China and is the main cultivated algae to the north of the Yangtze River. it is rich in protein, polysaccharides and vitamins, which can be used for food or medicine.

3. Porphyra yezoensis: porphyra yezoensis belongs to porphyra yezoaceae. The algal body is purplish red, round or kidney-shaped, flaky, membranous, 6-10 cm wide, 3-15 cm high, base heart-shaped, margin obviously serrated, androgynous. It usually grows on the rocks in the middle and most wonderful parts of the belt, with a peak growth period from December to April of the following year.

4. Porphyra yezoensis: porphyra yezoensis belongs to porphyra yezoaceae. The algal body is purplish red or purplish red, flaky, membranous, 15-100 cm long and 2-10 cm wide, with a round or heart-shaped base, less wrinkles, margin serrated, androgynous, usually growing on the middle and most exciting parts of the belt rocks.

5. Porphyra: porphyra yezoensis belongs to porphyra yezoaceae. The algae are ovoid, lanceolate or irregularly round, 20 cm high, 30 cm high, 60 cm wide, 10 cm wide and more than 30 cm wide. Base cuneate, rounded or heart-shaped, margin more or less wrinkled, smooth without serrate. The algae is relatively thin, only 20-33 microns thick.