 In 1914 , Michael Levine was the first to report successfully cultivating C. micaceus from spores in the laboratory . In his experiments , fruit bodies appeared roughly 40 to 60 days after initially inoculating the growth media ( agar supplemented with soil , horse dung , or cornmeal ) with spores . Like other coprinoid species , C. micaceus undergoes synchronous meiosis . The chromosomes are readily discernible with light microscopy , and all of the meiotic stages are well @-@ defined . These features have made the species a useful tool in laboratory investigations of Basidiomycete cytogenetics . The chromosome number of C. micaceus is n = 12 . 
