Psilolechia lucida (Ach.) M. Choisy

Bull. Mens. Soc. Linn. Lyon, 18: 142, 1949. Basionym: Lichen lucidus Ach. - Lichenogr. Suec. Prodr.: 39, 1799.
Synonyms: Biatora lucida (Ach.) Fr.; Lecidea lucida (Ach.) Ach.; Lepra chlorina sensu A. Massal.
Distribution: N - Frl (Tretiach 2004), Ven, TAA (Caniglia & al. 2002, Nascimbene 2006c, Nascimbene & al. 2022), Lomb, Piem (Morisi & Sereno 1995, Piervittori & al. 1996b, Isocrono & Falletti 1999, Isocrono & al. 2003, Morisi 2005, Isocrono & Piervittori 2008, Hafellner 2023), VA (Borlandelli & al. 1996, Piervittori & Isocrono 1997, 1999), Emil (Tretiach & al. 2008, Fariselli & al. 2020). C - Tosc (Benesperi & al. 2007), Sar. S - Cal (Puntillo 2011, Brackel & Puntillo 2016).
Description: Thallus leprose-granular, episubstratic, ecorticate, continuous to cracked, effuse, sulphur yellow to yellow-green in shade-forms, entirely consisting of mainly farinose, more or less globose, 10-35(-60) µm wide goniocysts surrounded by irregularly arranged hyphae, and interspersed with numerous, large, colourless crystals insoluble in K, visible in squash preparations. Apothecia rare, biatorine, convex to subglobose, immersed in the thallus, 0.1-0.3 mm across, sometimes confluent, tuberculate and up to 0.8 mm across, with a yellow-green to pale or lemon yellow or yellow-orange to olivaceous or brownish yellow disc, without a distinct margin. Proper exciple very poorly developed; epithecium intensely yellow-green, with small yellow crystals not dissolving in K, K-, N-; hymenium colourless, 25-35 µm high, I+ blue; paraphyses simple or forked, the apices hardly swollen; hypothecium colourless. Asci 8-spored, cylindrical-clavate, the apical dome K/I+ pale blue, with a dark blue apical tube diverging towards the apex, the wall with a K/I+ dark blue outer layer. Ascospores 1-celled, hyaline, oblong-ovoid, 4-5(-7) x 1-2(-2.5) µm. Photobiont chlorococcoid, the cells rounded, up to 10 µm wide. Spot tests: thallus and apothecia K-, P-, KC-, P-, UV+ dull orange. Chemistry: rhizocarpic acid (major) and an unidentified pigment (trace).
Note: on surfaces of siliceous rocks protected from rain in humid areas, but also on a wide range of substrata (soil, exposed roots, bases of ancient trees), with a correspondingly wide altitudinal range; in Italy it is restricted to natural habitats and is most frequent in the Alps and the in the most humid parts of the Mediterranean belt.
Growth form: Leprose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)
Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)
In underhangs rarely wetted by rain

Commonnes-rarity: (info)

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

Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Spain; Canary Islands: La Gomera.



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (15489)
2001/12/15



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (15489)
2001/12/15


Andres Saag; Owner: University of Tartu



P.L.Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (37027)
2008.02.23



P.L.Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (37027)
2008.02.25



Juri Nascimbene - CC BY-SA 4.0
Stelvio National Park, Reg. Trentino-Alto Adige Prov. Trento, Italy.
07.2005



Felix Schumm – CC BY-SA 4.0
[11566], Portugal, Madeira, Rabaçal, Levadaweg zum Wasserfall Cascata do Risco, auf Wurzeln, 1080 m, ca. 32°45' N, 17°08' W. Leg. Schumm 29.12.2003, det. Schumm



Felix Schumm – CC BY-SA 4.0
[11566], Portugal, Madeira, Rabaçal, Levadaweg zum Wasserfall Cascata do Risco, auf Wurzeln, 1080 m, ca. 32°45' N, 17°08' W. Leg. Schumm 29.12.2003, det. Schumm



Felix Schumm – CC BY-SA 4.0
[11566], Portugal, Madeira, Rabaçal, Levadaweg zum Wasserfall Cascata do Risco, auf Wurzeln, 1080 m, ca. 32°45' N, 17°08' W. Leg. Schumm 29.12.2003, det. Schumm



Felix Schumm – CC BY-SA 4.0
[11566], Portugal, Madeira, Rabaçal, Levadaweg zum Wasserfall Cascata do Risco, auf Wurzeln, 1080 m, ca. 32°45' N, 17°08' W. Leg. Schumm 29.12.2003, det. Schumm



Felix Schumm – CC BY-SA 4.0
[11566], Portugal, Madeira, Rabaçal, Levadaweg zum Wasserfall Cascata do Risco, auf Wurzeln, 1080 m, ca. 32°45' N, 17°08' W. Leg. Schumm 29.12.2003, det. Schumm



Felix Schumm – CC BY-SA 4.0
[11566], Portugal, Madeira, Rabaçal, Levadaweg zum Wasserfall Cascata do Risco, auf Wurzeln, 1080 m, ca. 32°45' N, 17°08' W. Leg. Schumm 29.12.2003, det. Schumm



Felix Schumm – CC BY-SA 4.0
[11566], Portugal, Madeira, Rabaçal, Levadaweg zum Wasserfall Cascata do Risco, auf Wurzeln, 1080 m, ca. 32°45' N, 17°08' W. Leg. Schumm 29.12.2003, det. Schumm



Felix Schumm – CC BY-SA 4.0
[11566], Portugal, Madeira, Rabaçal, Levadaweg zum Wasserfall Cascata do Risco, auf Wurzeln, 1080 m, ca. 32°45' N, 17°08' W. Leg. Schumm 29.12.2003, det. Schumm



Felix Schumm – CC BY-SA 4.0
[11566], Portugal, Madeira, Rabaçal, Levadaweg zum Wasserfall Cascata do Risco, auf Wurzeln, 1080 m, ca. 32°45' N, 17°08' W. Leg. Schumm 29.12.2003, det. Schumm



Felix Schumm – CC BY-SA 4.0
[11566], Portugal, Madeira, Rabaçal, Levadaweg zum Wasserfall Cascata do Risco, auf Wurzeln, 1080 m, ca. 32°45' N, 17°08' W. Leg. Schumm 29.12.2003, det. Schumm



Felix Schumm – CC BY-SA 4.0
[11566], Portugal, Madeira, Rabaçal, Levadaweg zum Wasserfall Cascata do Risco, auf Wurzeln, 1080 m, ca. 32°45' N, 17°08' W. Leg. Schumm 29.12.2003, det. Schumm



Felix Schumm – CC BY-SA 4.0
[11566], Portugal, Madeira, Rabaçal, Levadaweg zum Wasserfall Cascata do Risco, auf Wurzeln, 1080 m, ca. 32°45' N, 17°08' W. Leg. Schumm 29.12.2003, det. Schumm



Felix Schumm – CC BY-SA 4.0
[11566], Portugal, Madeira, Rabaçal, Levadaweg zum Wasserfall Cascata do Risco, auf Wurzeln, 1080 m, ca. 32°45' N, 17°08' W. Leg. Schumm 29.12.2003, det. Schumm



Felix Schumm – CC BY-SA 4.0
[11566], Portugal, Madeira, Rabaçal, Levadaweg zum Wasserfall Cascata do Risco, auf Wurzeln, 1080 m, ca. 32°45' N, 17°08' W. Leg. Schumm 29.12.2003, det. Schumm
HPTLC in den Laufmitteln A, B’ und C nach Säurebehandlung bei Tageslicht und 366 nm UV-Langwelle und vor Säurebehandlung in 366 nm UV-Langwelle. 1: Start, 4: Position von Norstictinsäure, 7: Position von Atranorin rh: Rhizocarpsäure



Pier Luigi Nimis - CC BY-SA 4.0; Owner: Department of Life Sciences, University of Trieste
TSB 37624



P.L. Nimis CC BY-SA 4.0
TSB 37624



P.L. Nimis CC BY-SA 4.0
TSB 37624



P.L. Nimis CC BY-SA 4.0
TSB 37624



P.L. Nimis CC BY-SA 4.0
TSB 37624



P.L. Nimis CC BY-SA 4.0
TSB 37625


Walter Obermayer CC BY-SA 4.0 - Source: Lichens of Noricum - http://lichens-of-noricum.uni-graz.at/
with Chrysothryx chlorina


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


Walter Obermayer CC BY-SA 4.0 - Source: Lichens of Noricum - http://lichens-of-noricum.uni-graz.at/


Walter Obermayer CC BY-SA 4.0 - Source: Lichens of Noricum - http://lichens-of-noricum.uni-graz.at/


Walter Obermayer CC BY-SA 4.0 - Source: Lichens of Noricum - http://lichens-of-noricum.uni-graz.at/


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=349&lang=en
France, Commana


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=349&lang=en
France, Commana


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=349&lang=en
France, Commana


Alain Gerault - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=349&lang=en
France, Poullaouen


Alain Gerault - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=349&lang=en
France, Commana


Alain Gerault - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=349&lang=en
France, Commana


Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Central Europe; Germany; Hesse.


Walter Obermayer CC BY-SA 4.0 - Source: Lichens of Noricum - http://lichens-of-noricum.uni-graz.at/
with Chrysothryx chlorina