Taxonomically belonging to Cyanophyta, Cyanophyta, Nostoccales, Nostoc Caacea and Nostoc commune Vauch, Nostoc is a Colony of Nostoc. Common names are auricularia auricula, auricularia auricula, Lycium chinense, Echinococcus chinensis, Leigong excrement, Leigong fungus and Shanpi.

It grows on rocks, sand and gravel, sandy soil, grassland, ridges and banks near water in hills and plains, and is drought-resistant. When it is dry and crushed by hand, it can grow with water. It can fix nitrogen and resist cold, and can still survive above-30℃ in Antarctica. Widely distributed in China, it is a traditional non-staple food.

Extended data:

Physalis alkekengi is rich in protein, vitamins and minerals such as phosphorus, zinc and calcium. 100g of Nostoc commune contains the highest content of calcium and iron.

Protein content is relatively high and fat content is relatively low. It is rich in protein, vitamins and amino acids such as phosphorus, zinc and calcium, especially it contains 8 essential amino acids and 2 semi-essential amino acids: valine, isoleucine, leucine, threonine, methionine, lysine, phenylalanine, tryptophan, arginine and histidine.

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