Placidiopsis crassa (Anzi) Clauzade & Cl. Roux

Bull. Soc. Bot. Centre-Ouest, n. sér., nr. spéc. 7: 827, 1985. Basionym: Endocarpon crassum Anzi - Comm. Soc. Critt. Ital., 2, 1: 23, 1864.
Synonyms: Dermatocarpon crassum (Anzi) Zahlbr.; Endopyrenium crassum (Anzi) Müll. Arg.; Verrucaria crassa (Anzi) Jatta non A. Massal. nec Eschw.; Verrucaria crustulosa Nyl.
Distribution: N - Lomb, Lig.
Note: on periodically flooded siliceous rocks below the montane belt. According to Breuss (1996) the species does not belong to Placidiopsis; it is probably related to, if not identical with, Placopyrenium formosum Orange (see Orange 2009).
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Poorly known taxon in need of further study

Commonnes-rarity: (info)

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

© The Trustees of the Natural History Museum, London – CC BY-SA NC 4.0


Source: https://nhm2.uio.no/typephotos/lichens/arkiv/O-L-153485d.jpg
ITALY: in Valle del forno (Ceréna) rarissimum - ISOTYPE