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SUMMARY
Evidence is presented to show that infection of young bracken fronds of mature plants with Cryptomycina Pteridis may be caused by ascospores as well as by conidia as demonstrated in an earlier study. The symptoms of disease following inoculation with ascospores are similar to the localized lesions resulting from inoculation with conidia. The production of conidial cirrhi is alike in the two cases. Microscopic study reveals the same rapid invasion of the host tissues and similarity in the invading mycelium and in the appearance of the host cells.
The role of ascospores in the life history of the parasite is discussed.