Physconia detersa (Nyl.) Poelt

Nova Hedwigia, 12: 123, 1966. Basionym: Parmelia pulverulenta var. detersa Nyl. - Syn. Meth. Lich., 1: 420, 1860.
Synonyms: Hagenia detersa (Nyl.) Bagl.; Physcia detersa (Nyl.) Nyl.; Physcia grisea f. subnitens (Vain.) Räsänen; Physcia grisea var. detersa (Nyl.) Lynge; Physcia lanuginosa var. pannarioides Räsänen; Physcia leucoleiptes auct. p.p. non (Tuck.) Lettau; Physcia leucoleiptes var. detersa (Nyl.) Nádv.
Distribution: N - Ven, TAA (Nascimbene 2005b, Nascimbene & al. 2007b), Lomb (Zocchi & al. 1997), Piem (Isocrono & al. 2004, Matteucci & al. 2010), VA (Piervittori & Isocrono 1999), Emil (Fariselli & al. 2020), Lig (Brunialti & Giordani 2003, Watson 2014). C - Tosc (Loppi & al. 1994, 1995, 1997, Benesperi 2000a), Marc, Umb (Panfili 2000, 2007, Ravera & al. 2006), Laz (Zucconi & al. 2013), Abr (Recchia & Villa 1996 (Nimis & Tretiach 1999, Gheza & al. 2021), Mol (Caporale & al. 2008), Sar (Zedda 1995, 2002, Rizzi & al. 2011, Di Nuzzo & al. 2022). S - Bas (Potenza & al. 2014).
Description: Thallus foliose, heteromerous, dorsiventral, rather loosely adnate, forming orbicular or rarely irregular, up to 6(-8) cm wide rosettes. Lobes linear-elongate, discrete to somewhat irregularly rounded and partly imbricate, 1-2(-3) mm broad, flat to slightly concave. Upper surface grey-brown or brown, bluish pruinose at least at lobe-tips, with primarily marginal, linear-elongate, bluish grey soralia bearing granulose, pseudocorticate and isidioid soredia. Lower surface tan-brown (almost never white) in marginal parts, dark brown or black in central parts, with black, squarrosely branched rhizines. Upper cortex scleroplectenchymatous; medulla white; lower cortex irregularly prosoplectenchymatous. Apothecia rare, lecanorine, up to 3 mm across, with a dark disc and a usually sorediate thalline margin. Asci 8-spored, elongate-clavate, very thin-walled, with a K/I+ blue, tall tholus penetrated by a faintly amyloid apical cushion, the wall K/I-, surrounded by a K/I+ blue outer layer, Lecanora-type. Ascospores 1-septate, brown, ellipsoid, 26-32(-35) x 13-18(-20) µm, not thickened at apex, Physconia-type. Pycnidia black, immersed. Conidia 4-6 x c. l µm. Spot tests: cortex, medulla and soralia K-, C-, KC-, P-. Chemistry: without lichen substances.
Note: on mossy rocks along steep slopes, and on trunks of deciduous trees in the montane belt; some Italian records could refer to P. perisidiosa, which is more common in Italy.
Growth form: Foliose, narrow lobed
Substrata: bark
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)

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
Herbarium samples

Leif Stridvall - Source: http://www.stridvall.se/la/galleries.php



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (27326)
2003/03/17



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (27326)
2003/03/17
soralium



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (11849)
2003/03/12



Felix Schumm – CC BY-SA 4.0
[9051], USA, Maine, Washington Co., Friedhof zwischen Steuben und Milbridge, 44°31.365’ N, 67°53.755’ W, 40 m. Leg et det. F. Schumm, 05.09.2001.



Felix Schumm – CC BY-SA 4.0
[9051], USA, Maine, Washington Co., Friedhof zwischen Steuben und Milbridge, 44°31.365’ N, 67°53.755’ W, 40 m. Leg et det. F. Schumm, 05.09.2001.



Felix Schumm – CC BY-SA 4.0
[9051], USA, Maine, Washington Co., Friedhof zwischen Steuben und Milbridge, 44°31.365’ N, 67°53.755’ W, 40 m. Leg et det. F. Schumm, 05.09.2001.



Felix Schumm – CC BY-SA 4.0
[9051], USA, Maine, Washington Co., Friedhof zwischen Steuben und Milbridge, 44°31.365’ N, 67°53.755’ W, 40 m. Leg et det. F. Schumm, 05.09.2001.



Felix Schumm – CC BY-SA 4.0
[9051], USA, Maine, Washington Co., Friedhof zwischen Steuben und Milbridge, 44°31.365’ N, 67°53.755’ W, 40 m. Leg et det. F. Schumm, 05.09.2001.



Felix Schumm – CC BY-SA 4.0
[9051], USA, Maine, Washington Co., Friedhof zwischen Steuben und Milbridge, 44°31.365’ N, 67°53.755’ W, 40 m. Leg et det. F. Schumm, 05.09.2001.



Felix Schumm – CC BY-SA 4.0
[9051], USA, Maine, Washington Co., Friedhof zwischen Steuben und Milbridge, 44°31.365’ N, 67°53.755’ W, 40 m. Leg et det. F. Schumm, 05.09.2001.



Felix Schumm – CC BY-SA 4.0
[9051], USA, Maine, Washington Co., Friedhof zwischen Steuben und Milbridge, 44°31.365’ N, 67°53.755’ W, 40 m. Leg et det. F. Schumm, 05.09.2001.



Felix Schumm – CC BY-SA 4.0
[9051], USA, Maine, Washington Co., Friedhof zwischen Steuben und Milbridge, 44°31.365’ N, 67°53.755’ W, 40 m. Leg et det. F. Schumm, 05.09.2001.



Felix Schumm – CC BY-SA 4.0
[9051], USA, Maine, Washington Co., Friedhof zwischen Steuben und Milbridge, 44°31.365’ N, 67°53.755’ W, 40 m. Leg et det. F. Schumm, 05.09.2001.



Felix Schumm – CC BY-SA 4.0
[5719], Canada, Ontario, Beechwood Rd., just north of Thorold Stone Road, Niagara Falls, UTM Grid Reference: 649400 4775075, Niagara Regional Municipality. On trunk of hardwood at edge of woods. With Physcia millegrana. Leg et det. S.R. Olszewski 18.04.1999 [No. 4856e].



Felix Schumm – CC BY-SA 4.0
[5719], Canada, Ontario, Beechwood Rd., just north of Thorold Stone Road, Niagara Falls, UTM Grid Reference: 649400 4775075, Niagara Regional Municipality. On trunk of hardwood at edge of woods. With Physcia millegrana. Leg et det. S.R. Olszewski 18.04.1999 [No. 4856e].



Felix Schumm – CC BY-SA 4.0
[5719], Canada, Ontario, Beechwood Rd., just north of Thorold Stone Road, Niagara Falls, UTM Grid Reference: 649400 4775075, Niagara Regional Municipality. On trunk of hardwood at edge of woods. With Physcia millegrana. Leg et det. S.R. Olszewski 18.04.1999 [No. 4856e].



Felix Schumm – CC BY-SA 4.0
[5719], Canada, Ontario, Beechwood Rd., just north of Thorold Stone Road, Niagara Falls, UTM Grid Reference: 649400 4775075, Niagara Regional Municipality. On trunk of hardwood at edge of woods. With Physcia millegrana. Leg et det. S.R. Olszewski 18.04.1999 [No. 4856e].



Felix Schumm – CC BY-SA 4.0
[5719], Canada, Ontario, Beechwood Rd., just north of Thorold Stone Road, Niagara Falls, UTM Grid Reference: 649400 4775075, Niagara Regional Municipality. On trunk of hardwood at edge of woods. With Physcia millegrana. Leg et det. S.R. Olszewski 18.04.1999 [No. 4856e].



Felix Schumm – CC BY-SA 4.0
[5719], Canada, Ontario, Beechwood Rd., just north of Thorold Stone Road, Niagara Falls, UTM Grid Reference: 649400 4775075, Niagara Regional Municipality. On trunk of hardwood at edge of woods. With Physcia millegrana. Leg et det. S.R. Olszewski 18.04.1999 [No. 4856e].



Felix Schumm – CC BY-SA 4.0
[5719], Canada, Ontario, Beechwood Rd., just north of Thorold Stone Road, Niagara Falls, UTM Grid Reference: 649400 4775075, Niagara Regional Municipality. On trunk of hardwood at edge of woods. With Physcia millegrana. Leg et det. S.R. Olszewski 18.04.1999 [No. 4856e].


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1026&lang=en
Sweden, Sigtuna


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1026&lang=en
Sweden, Sigtuna


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1026&lang=en
Sweden, Sigtuna


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1026&lang=en
Sweden, Sigtuna