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SUMMARY
Exidia glandulosa, E. recisa, and Auricularia auricula were sampled for 191 days in the field at Manhattan, Kansas, by use of the Kramer-Collins Spore Sampler. During this period, sporulation of these fungi occurred on 97, 71, and 74 days, respectively. Duration of sporulation was related to sizes of fructification and substrate. Studies of Calocera cornea, Ductifera pululahuana, and Dacrymyces palmatus under controlled conditions indicated that sporulation was closely correlated to fructification and substrate size and rate of drying. Auricularia auricula did not sporulate at 2 C in an environmental chamber, but did when the temperature was increased to 20 C. A single study of E. glandulosa and A. auricula carried out with the Dodecapus hourly total spore collector in a greenhouse, showed spore discharge to average 6,500 and 4,900 spores/hr/cm2, respectively.