Systematic and biological study of Ascobolaceae of Argentina XIX. Two new species of Ascobolus (Ascomycota)

Abstract

In the present contribution, two new species of Ascobolus are described: A. campanensis sp. nov. and A. bonaerensis sp. nov. Both species are heterothallic and belong to section
Dasyobolus. Ontogenetic studies showed a “cleistohymenial” ascocarp development which generally opens at late “telohymenial” phase. In darkness neither fructifications are formed nor esporulation occurs in A. bonaerensis; however in A. campanensis ascomata are formed with ascospores without perisporium, few paraphyses and hymenial mucilage that difficults ascocarp opening and ascospore discharge.