Two new hypocrealean ascomycetes on bryophytes from North America
Döbbeler, Peter; Davison, Paul G.; Buck, William R.
Two bryophilous species of the order Hypocreales (Ascomycetes) are introduced as new. Bryonectria aphanes (Bionectriaceae) has hyaline ascomata, four-spored asci, three-celled ascospores and numerous phialids and appressoria on the hyphae. It is recorded on the moss Platygyrium repens (Pylaisiadelphaceae, Hypnales) from Maine, U.S.A. Trichosphaerella goniospora (Niessliaceae) forms dark ascomata beset with setae deeply rooted in the peridial wall and eight two-celled ascospores. They disarticulate very early during sporogenesis resulting in 16 irregularly cubic part-spores. The species was collected on the liverwort Ptilidium pulcherrimum (Ptilidiaceae, Jungermanniales) in New Brunswick, Canada. The Niessliaceae belong to a hitherto unknown line within bryophilous fungi. On the other hand, bryophytes extend the spectrum of substrates for black hypocrealean fungi.