Cyrtidula quercus (A. Massal.) Minks

Rev. Mycol., 13: 61, 1891. Basionym: Arthopyrenia quercus A. Massal. - Ric. Auton. Lich. Crost.: 169, 1852.
Synonyms: Dermatina quercus (A. Massal.) Zahlbr.; Mycoporum miserrimum Nyl.; Mycoporum quercus (A. Massal.) Müll. Arg.
Distribution: N - VG, Ven (Lazzarin 2000b), Lomb. C - Tosc, Umb (Ravera 2000, Ravera & al. 2006).
Description: Thallus indistinct, doubtfully lichenized, mostly endosubstratic. Perithecia black, 0.1-0.4 x 0.1-0.2 mm, mostly irregular in ouline, isolated or aggregated into irregularly shaped, maximum 6-locular stromata. Involucrellum dark brown to black, K-, of compact hyphae intermixed with bark cells, not continuous below the exciple; hymenial gel I-; pseudoparaphyses branched but not anastomosing, short-celled, submoniliform. Asci 8-spored, globose or broadly pear-shaped, bitunicate, with an I- tholus, 25-31 x 19-22 µm. Ascospores with (3-)4(-5)-transverse septa and 1-4 transverse cells with a longitudinal septum, hyaline, ellipsoid. Photobiont probably absent, thallus sometimes loosely associated with Trentepohlia. Chemistry: without lichen substances.
Note: on young twigs of trees, mainly oaks, but also on Alnus and other species, mostly in the submediterranean belt.
Growth form: Fungus
Substrata: bark
Reproductive strategy: mainly sexual
Pioneer species

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: absent
Submediterranean belt: rare
Padanian area: absent
Humid submediterranean belt: rare
Humid mediterranean belt: absent
Dry mediterranean belt: absent

pH of the substrata:


Solar irradiation:








Altitudinal distribution:


Predictive model
Herbarium samples - CC BY-NC