LICHALP

Arthopyrenia stenospora Körb.

Non- or doubtfully lichenised.

Substrate: bark

Altitudinal distribution: montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)

Note: a doubtfully lichenised species resembling A. analepta, with an hypophloeodic, reddish-brown, spreading thallus, minute, depressed, hemispherical ascomata, 8-spored asci, and 1-septate, almost bacilliform ascospores (c. 18-22 × 2.5-4 µm); on smooth bark of deciduous trees, widespread throughout Europe but rarely collected, most records being historical.