Verrucaria tectorum (A. Massal.) Körb.

Verrucaria tectorum (A. Massal.) Körb.

Syn.: Lithocia tectorum A. Massal., Verrucaria viridula (Schrad.) Ach. f. tectorum (A. Massal.) J.R. Laundon

Lichenised.

Substrate: calciferous rocks

Altitudinal range: from the mesomediterranean belt (potential vegetation: evergreen broad-leaved forests dominated by Quercus ilex) to the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)

Note: mainly on man-made substrata, including mortar walls. frequently confused with V. macrostoma f. furfuracea, which is sorediate and not isidiate, and has a thicker thallus (see Roux et coll. 2014).

Austria: Kärnten; Steiermark; Switzerland: Graubünden; France: Alpes-de-Haute-Provence; Alpes-Maritimes; Drôme; Vaucluse; Italy: Friuli; Veneto; Lombardia; Piemonte; Liguria; Slovenia: Alpine and Pre-Alpine Slovenia;

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