The growth patterns of mushrooms are difficult to view since they come and go so quickly, appearing and disappearing overnight as if by magic. Their apparent lack of seed is another feature that was likely observed by early peoples who encountered them, perhaps providing further mystery as to the origin of the strange organisms.
John Rush, Entheogens and the Development of Culture: The Anthropology and Neurobiology of Ecstatic Experience
culture, entheogen, hallucinogenic