ITALIC 8.0

Catillaria nubila (Norman) M.Svenss., S.Ekman & M.Westb.

Taxon, https://doi.org/10.1002/tax.70069: 11, 2025. . Basionym: Biatorina nubila Norman 804. 1870 - Öfvers. Kongl. Vetensk.-Akad. Förh. 27: 804, 1870

Synonyms: Catillaria chalybeia var. chloropoliza (Nyl.) H.Kilias ; Catillaria chalybeia var. velebitica Servít; Diplotomma nubilum (Norman) Szatala; Lecidea chloropoliza (Nyl.) Zahlbr.

Distribution:

Description: Thallus crustose, episubstratic, grey-green to dark grey-brown, 0.3-0.4 mm thick, rimose-areolate. Apothecia lecideine, 0.3-0.7 mm across, adnate or weakly constricted at base, with a black, slightly convex to flat disc, and a black proper margin. Proper exciple dark brown to brown-black, often colourless on the outer trim in lower part, without green pigments, N-; epithecium brown, without green pigments, N-; hymenium completely colourless, 40-60 µm high; paraphyses mostly simple, lax, 1.5-2 µm thick at mid-level, the apical cells capitate, to 5 µm wide, with a dark cap; hypothecium dark brown, K-. Asci 8-spored, cylindrical-clavate, with a K/I+ blue outer coat and a K/I+ uniformly blue apical dome, Catillaria-type. Ascospores 1-septate, hyaline, oblong-ovoid to oblong-ellipsoid 8-12 x 2.5-3.5 µm. Pycnidia usually abundant, black, the wall dark brown. Conidia bacilliform, 3-4 x 1-1.3 µm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: thallus without lichen substances.

Note: a recently-resurrected silicicolous species of the C. chalybeia-complex, closely related to C. baliola (both species without a blue-green pigment in the apothecia), but with a rimose-areolate thallus and a black apothecial margin, probably less hygrophytic than the former species. For further details see Svensson & al. (2025). To be looked for in Italy.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Poorly known taxon in need of further study

pH of the substrata:

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Solar irradiation:

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Aridity:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Predictive model

Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder

SE-Europe; N-Cyprus; SE of Girne; Beşparmak Mountains; Buffavento Castle (and surroundings); as C. chalybeia

Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder

SE-Europe; N-Cyprus; SE of Girne; Beşparmak Mountains; Buffavento Castle (and surroundings); as Catillaria chalybeia

Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder

SE-Europe; N-Cyprus; SE of Girne; Beşparmak Mountains; Buffavento Castle (and surroundings); as Catillaria chalybeia