Growth and fruiting of Coprinus lagopus in pure culture have been studied on a medium containing glucose, dl-α-alanine, mineral salts and thiamin, and the effects of changes in concentration of certain components of this medium and of various substitutions investigated. It is demonstrated that fruiting led to withdrawal of materials from the whole of the colony. No evidence was obtained of the existence of a minimal quantity of substrate for fruiting to take place. The distribution of mature sporophores on a colony was affected by an internal mechanism. A theory as to its possible nature is suggested.
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M.F. Madelin (1956) studied this question.