Lepra slesvicensis (Erichsen) Hafellner

in Hafellner & Türk, Stapfia, 104: 172, 2016. Basionym: Pertusaria slesvicensis Erichsen - Feddes Rep., 35: 391, 1934.
Synonyms: Pertusaria amara f. slesvicensis (Erichsen) Almb.; Pertusaria slesvicensis Erichsen
Distribution: C - Tosc (Brunialti & Frati 2010, Craighero 2010, Frati & Brunialti 2023), Laz (Ravera 2001, 2002, Massari & Ravera 2002, Craighero 2010), Mol (Caporale & al. 2008), Sar (Zedda 1995, 2002, Loi & al. 2000, Zedda & Sipman 2001, Zedda & al. 2001, Craighero 2010, Cossu 2013). S - Camp (Brunialti & al. 2010, 2013, Craighero 2010, Ravera & Brunialti 2013), Pugl (Craighero 2010), Bas (Craighero 2010), Cal (Puntillo 1996, Incerti & Nimis 2006, Craighero 2010).
Description: Thallus crustose, episubstratic, continuous to fissured, whitish, pale grey or greenish grey, rarely weakly zoned at margin, delimited by a white prothallus, esorediate. Apothecia rather common, immersed in strongly convex and basally constricted, 0.5-3 mm wide and up to 2(-3) mm high fertile warts, 1(-3) per wart, with a brownish, often white-pruinose disc, and a slightly prominent thalline margin. Epithecium brown, K-; hymenium colourless; paraphyses slender, 1-1.5 µm thick; hypothecium colourless. Asci 1-spored, broadly cylindrical, the apex without a distinct ocular chamber, the outer sheath K/I+ blue, otherwise K/I–, with an inner extensible layer, Pertusaria-type. Ascospores 1-celled, hyaline, ellipsoid, 220-350 x 50-75 µm, the wall 2-5 µm thick. Pycnidia immersed, black. conidia short-bacilliform, 4-5 x 0.6-1 µm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-; top of fertile warts and medulla K-, C-, KC+ fleeting violet, P+ reddish, UV-; medulla with a strongly bitter taste. Chemistry: picrolichenic acid.
Note: an epiphytic lichen related to L. amara, but regularly fruiting, and most frequent in eu-Mediterranean areas, with a mainly Tyrrhenian distribution in Italy (Craighero 2010). A DNA study could better clarify its status. It is included in the Italian red list of epiphytic lichens as “Data Deficient” (Nascimbene & al. 2013c).
Growth form: Crustose
Substrata: bark
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

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

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
Herbarium samples
Index Fungorum GBIF

Manuel Gil
Spain, Canary Islands, Tenerife
on Erica canariensis



P.L. Nimis CC BY-SA 4.0
TSB 17658



P.L. Nimis CC BY-SA 4.0
TSB 13443


Manuel Gil
Spain, Canary Islands, Tenerife


Manuel Gil
Spain, Canary Islands, Tenerife


Manuel Gil
Spain, Canary Islands, Tenerife
on Erica canariensis


Manuel Gil
Spain, Canary Islands, Tenerife
on Erica canariensis


Manuel Gil
Spain, Canary Islands, Tenerife
on Erica canariensis


Manuel Gil
Spain, Canary Islands, Tenerife
on Erica canariensis


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