FIG 3.

Schematic illustration of distribution of mating types in mature ascomata of morels. (A) Three recognized types: I (both mating types equally distributed and present in the hymenium and stipe), II (the dominant type, MAT1-1 or MAT1-2 acting female, and opposite as male, with both mating types present in the hymenium while either of them is present in the stipe), and III (only one MAT idiomorph present in the ascomata, no mating, and ascospores not formed). (B) Distribution of mating types in the hymenium of the type II morels.