Pyrenopsis sanguinea Anzi

Atti Soc. Ital. Sc. Nat., 9: 241, 1866.
Synonyms: Psorotichia sanguinea (Anzi) Jatta
Distribution: N - TAA (UPS-L-166875, Nascimbene & al. 2022), Lomb (Schultz 2014).
Description: Thallus crustose, slightly gelatinous when wet, homoiomerous and paraplectenchymatous throughout, reddish to dark reddish brown, red-brown when wet, granulose or granulose-areolate. Areoles more or less rounded in outline, to 1 mm wide, more or less convex, the upper surface distinctly granulose. Apothecia pycnoascocarps, at first semi-immersed, then sessile, perithecioid, 0.25-0.4 mm across, with an initially pore-like, but soon open and flat, dark red-brown disc, and a distinct, persistent, granulose thalline margin. Proper exciple colourless, very thin, often poorly evident; epithecium faintly yellowish brown; hymenium colourless, 70-75 µm high, I+ blue; paraphyses simple or sparingly branched in upper part; subhymenium colourless. Asci 8-spored, subcylindrical, the outer wall I+ blue, without apical amyloid structures. Ascospores 1-celled, hyaline, broadly ellipsoid, (5-)6-8(-11) x 5-6 µm. Pycnidia semi-immersed in thalline warts, pyriform. Conidia ellipsoid, c. 3 x 1-1.5 µm. Photobiont cyanobacterial, chroococcoid (Gloeocapsa), the cells single or clustered, surrounded by reddish-violet gelatinous sheaths, 10-20 µm wide (incl. sheaths). Spot tests: all negative. Chemistry: without lichen substances.
Note: on sunny surfaces of basic siliceous rocks along seepage tracks. This taxon was synonymised by Hafellner & Türk (2001) with Cryptothele rhodosticta, a species whose occurrence in the Alps is dubious (see Jørgensen 2007). According to Schultz (2014), on the contrary, it is a well-distinct species.
Growth form: Crustose
Substrata: rocks
Photobiont: cyanobacteria, coccaceous (e.g. Gloeocapsa)
Reproductive strategy: mainly sexual
On otherwise dry surfaces with short periods of water seepage after rain
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: 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