Non- or doubtfully lichenised. Poorly known taxon.
Substrate: bark
Altitudinal distribution: submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus)
Note: a probably non-lichenised, rarely recorded species resembling J. subcoerulescens, but the hyaline muriform ascospores (30-36 × 9-12 µm) with an acuminate lower end; the type is on bark of Pinus from extra-Alpine Central Europe; the only record from the Alps (Austria) needs confirmation.