Nutritional and Other Aspects of Fruit-body Production in Pure Cultures of Collybia velutipes (Curt.) Fr.

Fruit-body production of Collybia velutipes on a synthetic medium consisting of minerals, asparagine, sucrose, and vitamin B1 has been studied. Compared with others tested this medium favoured fructification rather than mycelium growth. Primordia arose on culturea between pH 5⋅2 and 7⋅2 approximately. Relatively low initial concentration of asparagine, high initial concentration of sucrose, and increases in volume (without essential increase of the air interface) of media resulted in enhanced dry weights of sporophore crops. These factors variously affected mycelium yields and the times of primordium production. Details of growth, sporophore production, maximum yield, and changes in the medium are given.