Ochrolechia turneri (Sm.) Hasselrot

Svensk Bot. Tidskr., 39: 130, 1945. Basionym: Lichen turneri Sm. in Smith & Sowerby - Engl. Bot., 12: tab. 857, 1801.
Synonyms: Buellia farinosa Malme; Lecanora parella var. turneri (Sm.) Arnold; Lecanora turneri (Sm.) Ach.; Ochrolechia alboflavescens var. turneri (Sm.) Verseghy; Ochrolechia pallescens var. turneri (Sm.) Körb.; Ochrolechia parella var. turneri (Sm.) Arnold; Pertusaria leprarioides auct. p.max.p. non Erichsen
Distribution: N - VG (TSB 25973), Ven (Nascimbene & Caniglia 2000, 2003c), TAA (Nascimbene & al. 2007b), Emil (Fariselli & al. 2020), Lig. C - Tosc (Loppi & al. 1997, 1998b, Loppi & Frati 2006), Marc (Nimis & Tretiach 1999), Umb (Panfili 2000b, Ravera & al. 2006), Laz (Ravera 2002b), Abr (Nimis & Tretiach 1999), Mol (Caporale & al. 2008, Paoli & al. 2015), Sar (Loi & al. 2000, Zedda & al. 2001, Zedda 2002, Stofer 2006). S - Pugl (Nimis & Tretiach 1999), Bas (Potenza & al. 2014), Si (Schicchi & al. 1997, Ottonello & Isocrono 2004, Stofer 2006, Campisi & al. 2020).
Description: Thallus crustose, thin, usually continuous to cracked, rarely tuberculate, whitish-grey or grey, sometimes delimited by a thick, zoned, white to brownish-pink prothallus. Soralia small, <0.5 mm diam., often excavate and in lines, more rarely plane to convex, orbicular to irregular, usually discrete, sometimes confluent. Soralia granular, 40-60(-75) µm wide, white-grey to grey, sometimes with a brownish tinge, usually paler than thallus. Apothecia rare, lecanorine, 0.5-2 mm across, with a flesh-coloured, densely white-pruinose, first concave then flat disc surrounded by a salmon-pink discoid tissue, and by a thick, wrinkled, usually sorediate thalline margin. Asci 4-6-spored with thick, amyloid walls, Pertusaria-type. Ascospores 1-celled, hyaline, thin walled, 40-50 x 20-25 µm. Spot tests: soralia K-, C+ yellow, KC+ orange or pale yellow, P-, UV+ glaucous with an orange tinge; apothecial disc C+red. Chemistry: variolaric acid in the medulla, gyrophoric and lecanoric acid in the apothecia.
Note: on bark of isolated (mostly) deciduous trees in open, humid, montane to subalpine woodlands.
Growth form: Crustose
Substrata: bark
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)

Commonnes-rarity: (info)

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

pH of the substrata:


Solar irradiation:








Altitudinal distribution:


Predictive model
Herbarium samples

P.L. Nimis CC BY-SA 04
TSB 26349

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (30217)

Erichsen C.F.E. 1936. Pertusariaceae. - In: Dr. L. Rabenhorsts Kryptogamenflora von Deutschland, Österreich und der Schweiz. Bd. IX, Abt. 5, T. 1. Akad. Verlagsges., Leipzig, pp. 321-512, 513-728. - Public Domain

Leif Stridvall - Source: http://www.stridvall.se/la/galleries.php