Ochrolechia tartarea (L.) A. Massal.

Ric. Auton. Lich. Crost.: 30, 1852. Basionym: Lichen tartareus L. - Sp. Pl.: 1141, 1753.
Synonyms: Lecanora tartarea (L.) Ach.; Lecanora tartarea f. crassissima Nyl.; Ochrolechia androgyna var. saxorum (Oeder) Verseghy non auct.; Ochrolechia pulvinata Verseghy; Ochrolechia tartarea f. crassissima (Nyl.) Cout.; Ochrolechia tartarea var. pycnidiifera Verseghy; Parmelia tartarea (L.) Ach.; Pertusaria gyrocheila Nyl.
Distribution: N - Ven, TAA, Lomb, Piem (Isocrono & al. 2004), VA (Piervittori & Isocrono 1999), Emil (Fariselli & al. 2020), Lig. C - Tosc, Marc, Laz, Abr, Sar (Monte 1993, Nöske 2000, Kukwa 2011, Neuwirth 2018). S - Camp (Ricciardi & al. 2000), Pugl, Bas (Potenza 2006), Cal (Puntillo 1996, Stofer 2006), Si (Ottonello & Romano 1997, Ottonello & al. 2011).
Description: Thallus crustose, episubstratic, often very thick (1-4 mm), white to grey, soft, often powdery-tartareous, continuous or with irregular warts forming an uneven crust, sometimes delimited by a paler, zoned prothallus. Apothecia lecanorine, at first immersed and with a punctiform disc, later sessile, rounded or irregular, 2-5(-8) mm across, with a pale brown to orange-pink, concave to flat, often scabrose and pruinose disc, and a thick, wavy, sometimes proliferating thalline margin. Epithecium brownish, with granules dissolving in K; hymenium colourless; paraphyses thin, densely branched and anastomosing; hypothecium colourless. Asci 8-spored, with thick, amyloid walls, Pertusaria-type. Ascospores 1-celled, hyaline, broadly ellipsoid, (35-)40-70 x 20-40 μm. Photobiont chlorococcoid. Spot tests: thallus K- or K+ pale yellow, C+ orange-red, KC+ red, P-, UV-; apothecial disc C+ and KC+ red.. Chemistry: medulla and apothecial disc with gyrophoric acid (major), and lecanoric acid (traces); thallus with additional androgyna B unknown 3 substance and 2 fatty acids (androgyna B unknowns 1-2 sensu sensu Tønsberg 1992).
Note: on siliceous rocks and on thin soil layers in humid situations, mostly in upland areas. In the past the species was frequently confused with other taxa.
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)

Commonnes-rarity: (info)

Alpine belt: very rare
Subalpine belt: rare
Oromediterranean belt: extremely rare
Montane belt: very rare
Submediterranean belt: extremely rare
Padanian area: absent
Humid submediterranean belt: 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
Herbarium samples


P.L. Nimis CC BY-SA 4.0
TSB 10480


Nere Sorrentino
Spain, South Atlantic coasts of Galicia
02.06.2020


Nere Sorrentino
Spain, South Atlantic coasts of Galicia
02.06.2020


Nere Sorrentino
Spain, South Atlantic coasts of Galicia
02.06.2020


Nere Sorrentino
Spain, South Atlantic coasts of Galicia
02.06.2020


Zahlbruckner A. 1926. Lichenes (Flechten). In: Engler A. (ed.): Die natürlichen Pflanzenfamilien. 2nd ed., vol 8, W. Engelmann, Leipzig, 270 pp.


Zahlbruckner A. 1926. Lichenes (Flechten). In: Engler A. (ed.): Die natürlichen Pflanzenfamilien. 2nd ed., vol 8, W. Engelmann, Leipzig, 270 pp.