Diploschistes gypsaceus (Ach.) Zahlbr.

Hedwigia, 31: 35, 1892. Basionym: Urceolaria gypsacea Ach. - Lichenogr. Univ.: 338, 1810.
Synonyms: Diploschistes cretaceus (Ach.) Lettau; Diploschistes ochrophanes Lettau; Diploschistes scruposus subsp. cretaceus (Ach.) Clauzade & Cl. Roux; Diploschistes scruposus subsp. ochrophanes (Lettau) Clauzade & Cl. Roux; Gyalecta cretacea Ach.
Distribution: N - VG (Tretiach & al. 2007b), Frl (Tretiach & Hafellner 2000), Ven, TAA (Nascimbene 2008b), Lomb, Piem, Emil (Fariselli & al. 2020), Lig. C - Tosc, Marc (Nimis & Tretiach 1999), Umb (Genovesi & Ravera 2001, Ravera & al. 2006), Laz (Genovesi & al. 2011), Abr (Gheza & al. 2021), Mol (Ravera & Genovesi 2012, Genovesi & Ravera 2014), Sar (Rizzi & al. 2011). S - Camp (Aprile & al. 2003b, Nimis & Tretiach 2004, Garofalo & al. 2010), Bas, Cal (Puntillo 1996), Si (Grillo 1998, Grillo & Caniglia 2004, Grillo & al. 2007b, Brackel 2008b, Ottonello & al. 2011, Cataldo & Minissale 2013, 2015).
Description: Thallus crustose, episubstratic, rimose-areolate, covered in a chalk-white to white-grey pruina giving the thallus a farinose appearance, consisting of 0.8-2 mm wide and 1-3 mm thick, flat to convex, irregularly angular areoles. Apothecia lecanorine, semi-immersed in the thallus, 2-5 mm across, with an initially concave and urceolate, then flat, usually pruinose disc, and a thick thalline margin. Proper exciple blackish brown, up to 65 µm wide laterally, pseudoparenchymatous; epithecium poorly differentiated, colourless to brownish; hymenium colourless, 120-190 µm tall, non amyloid; paraphyses simple, flexuose, 1-2 µm thick, the apical cells not swollen; hypothecium colourless, c. 15 µm thick. Asci 4-spored, narrowly clavate to subcylindrical, the wall evenly thickened when mature, the somewhat abrupt apical thickening with a thin, internal apical beak, lacking any apical apparatus, the contents I+ orange-red, the walls I-, not fissitunicate. Ascospores muriform, with 4-7 transverse and 1-2 longitudinal septa, at first hyaline then turning brown, broadly ellipsoid, 25-40 x 10-17 µm,. Photobiont chlorococcoid. Spot tests: thallus K-, C+ red, KC- P-, UV- Chemistry: lecanoric acid.
Note: a widespread temperate to southern boreal-montane lichen found in rock fissures, on vertical or underhanging surfaces of calcareous rocks, often in woodlands, with a wide altitudinal range.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
In underhangs rarely wetted by rain

Commonnes-rarity: (info)

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


pH of the substrata:

(info)

1

2

3

4

5

Solar irradiation:

(info)

1

2

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4

5

Aridity:

(info)

1

2

3

4

5

Eutrophication:

(info)

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4

5

Poleotolerance:

(info)

0

1

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3

Altitudinal distribution:

(info)

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5





P.L. Nimis CC BY-SA 04
TSB 38832



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (23311)
2001/12/13


Paolo Fontanesi, Reggio Emilia; Owner: Paolo Fontanesi, Reggio Emilia


Paolo Fontanesi, Reggio Emilia; Owner: Paolo Fontanesi, Reggio Emilia


Paolo Fontanesi, Reggio Emilia; Owner: Paolo Fontanesi, Reggio Emilia



Felix Schumm – CC BY-SA 4.0
[1913], Germany, Baden-Württemberg, Kreis Göppingen, Kloster Adelberg, sonnige Klostermauer ca. 10 cm über Boden, 450 m. Leg. et det. Schumm 25.09.1971.



Felix Schumm – CC BY-SA 4.0
[1913], Germany, Baden-Württemberg, Kreis Göppingen, Kloster Adelberg, sonnige Klostermauer ca. 10 cm über Boden, 450 m. Leg. et det. Schumm 25.09.1971.



Felix Schumm – CC BY-SA 4.0
[1913], Germany, Baden-Württemberg, Kreis Göppingen, Kloster Adelberg, sonnige Klostermauer ca. 10 cm über Boden, 450 m. Leg. et det. Schumm 25.09.1971.



Felix Schumm CC BY-SA 4.0
[1913], Germany, Baden-Württemberg, Kreis Göppingen, Kloster Adelberg, sonnige Klostermauer ca. 10 cm über Boden, 450 m. Leg. et det. Schumm 25.09.1971.



Felix Schumm CC BY-SA 4.0
[1913], Germany, Baden-Württemberg, Kreis Göppingen, Kloster Adelberg, sonnige Klostermauer ca. 10 cm über Boden, 450 m. Leg. et det. Schumm 25.09.1971.



Felix Schumm CC BY-SA 4.0
[1913], Germany, Baden-Württemberg, Kreis Göppingen, Kloster Adelberg, sonnige Klostermauer ca. 10 cm über Boden, 450 m. Leg. et det. Schumm 25.09.1971.



Felix Schumm CC BY-SA 4.0
[1913], Germany, Baden-Württemberg, Kreis Göppingen, Kloster Adelberg, sonnige Klostermauer ca. 10 cm über Boden, 450 m. Leg. et det. Schumm 25.09.1971.



Felix Schumm CC BY-SA 4.0
[1913], Germany, Baden-Württemberg, Kreis Göppingen, Kloster Adelberg, sonnige Klostermauer ca. 10 cm über Boden, 450 m. Leg. et det. Schumm 25.09.1971.



Felix Schumm CC BY-SA 4.0
[1913], Germany, Baden-Württemberg, Kreis Göppingen, Kloster Adelberg, sonnige Klostermauer ca. 10 cm über Boden, 450 m. Leg. et det. Schumm 25.09.1971.



Felix Schumm CC BY-SA 4.0
[1913], Germany, Baden-Württemberg, Kreis Göppingen, Kloster Adelberg, sonnige Klostermauer ca. 10 cm über Boden, 450 m. Leg. et det. Schumm 25.09.1971.



Felix Schumm CC BY-SA 4.0
[1913], Germany, Baden-Württemberg, Kreis Göppingen, Kloster Adelberg, sonnige Klostermauer ca. 10 cm über Boden, 450 m. Leg. et det. Schumm 25.09.1971.



Felix Schumm CC BY-SA 4.0
[1913], Germany, Baden-Württemberg, Kreis Göppingen, Kloster Adelberg, sonnige Klostermauer ca. 10 cm über Boden, 450 m. Leg. et det. Schumm 25.09.1971.



Felix Schumm CC BY-SA 4.0
[1913], Germany, Baden-Württemberg, Kreis Göppingen, Kloster Adelberg, sonnige Klostermauer ca. 10 cm über Boden, 450 m. Leg. et det. Schumm 25.09.1971.



Felix Schumm CC BY-SA 4.0
[1913], Germany, Baden-Württemberg, Kreis Göppingen, Kloster Adelberg, sonnige Klostermauer ca. 10 cm über Boden, 450 m. Leg. et det. Schumm 25.09.1971.



Felix Schumm CC BY-SA 4.0
[1913], Germany, Baden-Württemberg, Kreis Göppingen, Kloster Adelberg, sonnige Klostermauer ca. 10 cm über Boden, 450 m. Leg. et det. Schumm 25.09.1971.



Felix Schumm CC BY-SA 4.0
[1913], Germany, Baden-Württemberg, Kreis Göppingen, Kloster Adelberg, sonnige Klostermauer ca. 10 cm über Boden, 450 m. Leg. et det. Schumm 25.09.1971.



Felix Schumm CC BY-SA 4.0
[1913], Germany, Baden-Württemberg, Kreis Göppingen, Kloster Adelberg, sonnige Klostermauer ca. 10 cm über Boden, 450 m. Leg. et det. Schumm 25.09.1971.



Felix Schumm CC BY-SA 4.0
[1913], Germany, Baden-Württemberg, Kreis Göppingen, Kloster Adelberg, sonnige Klostermauer ca. 10 cm über Boden, 450 m. Leg. et det. Schumm 25.09.1971.



Felix Schumm CC BY-SA 4.0
[1913], Germany, Baden-Württemberg, Kreis Göppingen, Kloster Adelberg, sonnige Klostermauer ca. 10 cm über Boden, 450 m. Leg. et det. Schumm 25.09.1971.


Leif Stridvall - Source: http://www.stridvall.se/lichens/gallery/
Courtesy: Anita Stridvall



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (17497)
2001/11/24



P.L. Nimis CC BY-SA 4.0
TSB 41215



P.L. Nimis CC BY-SA 4.0
TSB 41215



P.L. Nimis CC BY-SA 4.0
TSB 10854



P.L. Nimis CC BY-SA 4.0
TSB 10854



P.L. Nimis CC BY-SA 4.0
TSB 4925



P.L. Nimis CC BY-SA 04
TSB 38832


Paolo Fontanesi, Reggio Emilia; Owner: Paolo Fontanesi, Reggio Emilia