Pertusaria apennina Bagl.

in Massalongo, Misc. Lichenol.: 25, 1856.
Synonyms:
Distribution: N - Lig (Lazzarin 2000b). C - Sar.
Description: Thallus crustose, episubstratic, continuous to deeply rimose-areolate, rather thick, brownish white to cream-coloured. Apothecia perithecioid, completely immersed in scattered, basally not restricted, 1-3 mm wide and to 2 mm high, semiglobose fertile warts, opening through a punctiform, black ostiole (1-8 ostioles per wart). Epithecium dark brown to black-brown, K-; hymenium colourless; paraphyses lax, branched and richly anastomosing; hypothecium colourless to pale yellow. Asci 2-spored, broadly cylindrical, the apex with a broad ocular chamber, the outer sheath K/I+ blue, otherwise K/I-, Pertusaria-type. Ascospores 1-celled, hyaline, ellipsoid, 150-250 x 55-85 µm, with a thick, 2-layered, smooth wall. Photobiont chlorococcoid. Spot tests: thallus K+ yellow soon turning deep red (red crystals), C-, KC-, P+ yellow-orange. Chemistry: thallus with norstictic acid.
Note: a mild-temperate saxicolous lichen which on the whole is very poorly known, reported from Liguria and Sardinia.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)
Poorly known taxon in need of further study

Commonnes-rarity: (info)

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

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

Harrie Sipman Samothrace (Sipman & Raus 59441);


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


Harrie Sipman
Samothrace (Sipman & Raus 59441);