Pyrenopsis subareolata Nyl.

Lich. Scand., 1: 27, 1861.
Synonyms: Cryptothele rhodosticta auct. non (Taylor) Henssen; Pyrenopsis fuscatula Nyl.; Pyrenopsis rhodosticta auct. non (Taylor) Müll. Arg.; Pyrenopsis rocaltensis Couderc
Distribution: N - TAA, Lomb, VA. C - Tosc.
Description: Thallus crustose-areolate, slightly gelatinous when wet, homoiomerous and paraplectenchymatous throughout, dark reddish brown to brownish black, red-brown when wet, to 0.1 mm thick, continuous to areolate, the areoles up to 0.8 mm wide, flat to slightly convex, usually smooth (but sometimes granulose at margins). Apothecia pycnoascocarps, immersed, 1(-2-3) per areole, perithecioid, 0.2-0.4 mm across, with a pore-like disc and a distinct thalline margin. Epithecium colourless to brownish; hymenium colourless, 85-100 µm high, I+ blue-green turning red-brown; paraphyses simple or sparingly branched in upper part. Asci 8-spored, subcylindrical, the outer wall I+ blue, without apical amyloid structures. Ascospores 1-celled, hyaline, broadly ellipsoid, 9-15(-18) x 6-9(-11) µm. Pycnidia immersed, 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, 7-10 µm wide (incl. sheaths). Spot tests: all negative. Chemistry: without lichen substances.
Note: on siliceous rocks with a prolonged water seepage after rain. See also Nimis (1993: 589), Orange (2003), and Jørgensen (2007: 51).
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: very rare
Oromediterranean belt: extremely rare
Montane belt: extremely 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


Curtis Randall Björk - CC BY-SA 4.0
Vancouver Island, Albert Head, Canada. Saxicolous, aerohaline rocks



Curtis Randall Björk - CC BY-SA 4.0
Vancouver Island, Albert Head, Canada. Saxicolous, aerohaline rocks



Curtis Randall Björk - CC BY-SA 4.0
Vancouver Island, Albert Head, Canada. Saxicolous, aerohaline rocks



Pier Luigi Nimis - Department of Life Sciences, University of Trieste - CC BY-SA 4.0
TSB 10406



Pier Luigi Nimis - Department of Life Sciences, University of Trieste - CC BY-SA 4.0
TSB 10406



Pier Luigi Nimis - Department of Life Sciences, University of Trieste - CC BY-SA 4.0
TSB 10406



Pier Luigi Nimis - Department of Life Sciences, University of Trieste - CC BY-SA 4.0
TSB 10406



Pier Luigi Nimis - Department of Life Sciences, University of Trieste - CC BY-SA 4.0
TSB 10406