Poeltinula hochstetteri (Körb.) E.J. Möller, Timdal, Haugan & Bendiksby
Fungal Syst. and Evol, 16: 224, 2025. Basionym: Catillaria hochstetteri Körb. - Parerga Lichenol.: 195, 1861.
Synonyms: Biatorina concreta auct. p.p. non (Ach.) Mudd; Buellia chlorospora (Nyl.) Hellb.; Buellia colludens Arnold; Buellia hochstetteri (Körb.) Mong.; Catillaria colludens (Arnold) Jatta; Catillaria concreta auct. p.p. non (Ach.) A. Massal.; Catocarpus applanatum (Fr.) Arnold; Catocarpus koerberi Stein; Lecidea applanata (Fr.) Leight.; Lecidea atroalba var. applanata Fr.; Lecidea atroalba var. chlorospora Nyl.; Lecidea colludens (Arnold) Nyl.; Lecidea hochstetteri var. colludens (Arnold) Vain.; Rhizocarpon applanatum (Fr.) Th. Fr.; Rhizocarpon concretum auct. p.p. non (Schaer.) Zahlbr. nec (Ach.) Elenkin; Rhizocarpon crenulatum H. Magn.; Rhizocarpon hochstetteri (Körb.) Vain.; Rhizocarpon massalongoi sensu Malme non (Körb.)
Description: Thallus crustose, episubstratic, grey-brown to red-brown, rimose to areolate, usually delimited by a black prothallus. Areoles flat to convex, 0.2-0.6(-1) mm wide, 0.1-0.3 mm thick. Medulla white, I-. Apothecia, lecideine, black, developing among the areoles, (0.4-)0.6-1(-1.3) mm across, with a flat to slightly convex disc and a distinct, usually persistent but finally sometimes excluded proper margin. Proper exciple of radiating, dark brown hyphae; epithecium green to blue-black, K-, N+ red; hymenium colourless, 95-150 µm high I+ blue; paraphysoids coherent both in water and in K, branched and anastomosing, 2.5-3 µm thick at mid-level, the apical cells to 3.5 µm, with a dark cap; hypothecium dark brown. Asci 8-spored, clavate, fissitunicate, with a well-developed tholus, lacking an ocular chamber, Rhizocarpon-type. Ascospores 1-septate, hyaline or sometimes pale grey-brown when overmature, (15-)21-25(-29) x (5-)8-14 µm, halonate. Photobiont chlorococcoid, the cells 10-15(-18) µm wide. Spot tests; medulla K- or rarely K+ yellow, C-, KC-, P- or rarely P+ orange. Chemistry: medulla with stictic acid, or without lichen substances.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: rather common
Montane belt: rather rare
Dry submediterranean belt: very rare
Humid submediterranean belt: absent
Padanian area: absent
pH of the substrata:
1 2 3 4 5
Solar irradiation:
1 2 3 4 5
Aridity:
1 2 3 4 5
Eutrophication:
1 2 3 4 5
Poleotolerance:
0 1 2 3
Altitudinal distribution:
1 2 3 4 5 6
Rarity
absent
extremely rare
very rare
rare
rather rare
rather common
common
very common
extremely common
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Occurrence data
Predictive map

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (8327)
2001/12/01

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (8327)
2001/12/01

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_R/Textes_R/Rhizocarpon_hochstetteri.htm
France, 4/3/2015 - Mont Cenis - Vanoise - Haute-Savoie

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_R/Textes_R/Rhizocarpon_hochstetteri.htm
France, 4/3/2015 - Mont Cenis - Vanoise - Haute-Savoie

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_R/Textes_R/Rhizocarpon_hochstetteri.htm
France, 4/3/2015 - Mont Cenis - Vanoise - Haute-Savoie

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_R/Textes_R/Rhizocarpon_hochstetteri.htm
France, 4/3/2015 - Mont Cenis - Vanoise - Haute-Savoie

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_R/Textes_R/Rhizocarpon_hochstetteri.htm
France, 4/3/2015 - Mont Cenis - Vanoise - Haute-Savoie

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_R/Textes_R/Rhizocarpon_hochstetteri.htm
France, 4/3/2015 - Mont Cenis - Vanoise - Haute-Savoie

Marta González Garcia - Centro de Estudios Micologicos Asturianos
Spain, La Farrapona (Saliencia-Somiedo), 30-V-2024, en rocas ácidas junto a Circinaria cupreogrisea, Rhizocarpon geographicum y Acarospora veronensis, a 1.700 m de altitud.

Marta González Garcia - Centro de Estudios Micologicos Asturianos
Spain, La Farrapona (Saliencia-Somiedo), 30-V-2024, en rocas ácidas junto a Circinaria cupreogrisea, Rhizocarpon geographicum y Acarospora veronensis, a 1.700 m de altitud.

Marta González Garcia - Centro de Estudios Micologicos Asturianos
Spain, La Farrapona (Saliencia-Somiedo), 30-V-2024, en rocas ácidas junto a Circinaria cupreogrisea, Rhizocarpon geographicum y Acarospora veronensis, a 1.700 m de altitud.

Marta González Garcia - Centro de Estudios Micologicos Asturianos
Spain, La Farrapona (Saliencia-Somiedo), 30-V-2024, en rocas ácidas junto a Circinaria cupreogrisea, Rhizocarpon geographicum y Acarospora veronensis, a 1.700 m de altitud.

Marta González Garcia - Centro de Estudios Micologicos Asturianos
Spain, La Farrapona (Saliencia-Somiedo), 30-V-2024, en rocas ácidas junto a Circinaria cupreogrisea, Rhizocarpon geographicum y Acarospora veronensis, a 1.700 m de altitud.

Marta González Garcia - Centro de Estudios Micologicos Asturianos
Spain, La Farrapona (Saliencia-Somiedo), 30-V-2024, en rocas ácidas junto a Circinaria cupreogrisea, Rhizocarpon geographicum y Acarospora veronensis, a 1.700 m de altitud.

Felix Schumm - CC BY-SA 4.0
[1448], Österreich, Großglockner Hochalpenstraße, Silikatuntergrund,
ca. 1800 m. Leg. F. Schumm, 05.08.1969, det. Oscar Klement,
01.05.1970. - Sporen 8/ ascus, 1-septate, 20-22 x 11-12 μm, hymenium
92-100 μm high, excipulum black, carbonized, lacking algae.

Felix Schumm - CC BY-SA 4.0
[1448], Österreich, Großglockner Hochalpenstraße, Silikatuntergrund,
ca. 1800 m. Leg. F. Schumm, 05.08.1969, det. Oscar Klement,
01.05.1970. - Sporen 8/ ascus, 1-septate, 20-22 x 11-12 μm, hymenium
92-100 μm high, excipulum black, carbonized, lacking algae.

Felix Schumm - CC BY-SA 4.0
[10559], Österreich, Niedere Tauern, Donnersbacher Alpen, Morsbachhütte,
Weg zur hinteren Morsbachalm, an Gneisblock, ca. 1400 m.Leg.
et det. Erich Putzler. 06.08.1954.

Felix Schumm - CC BY-SA 4.0
[10559], Österreich, Niedere Tauern, Donnersbacher Alpen, Morsbachhütte,
Weg zur hinteren Morsbachalm, an Gneisblock, ca. 1400 m.Leg.
et det. Erich Putzler. 06.08.1954.

Felix Schumm - CC BY-SA 4.0
[10559], Österreich, Niedere Tauern, Donnersbacher Alpen, Morsbachhütte,
Weg zur hinteren Morsbachalm, an Gneisblock, ca. 1400 m.Leg.
et det. Erich Putzler. 06.08.1954.

Felix Schumm - CC BY-SA 4.0
[10559], Österreich, Niedere Tauern, Donnersbacher Alpen, Morsbachhütte,
Weg zur hinteren Morsbachalm, an Gneisblock, ca. 1400 m.Leg.
et det. Erich Putzler. 06.08.1954.

Felix Schumm - CC BY-SA 4.0
[10559], Österreich, Niedere Tauern, Donnersbacher Alpen, Morsbachhütte,
Weg zur hinteren Morsbachalm, an Gneisblock, ca. 1400 m.Leg.
et det. Erich Putzler. 06.08.1954.

Felix Schumm - CC BY-SA 4.0
[10559], Österreich, Niedere Tauern, Donnersbacher Alpen, Morsbachhütte,
Weg zur hinteren Morsbachalm, an Gneisblock, ca. 1400 m.Leg.
et det. Erich Putzler. 06.08.1954.

Felix Schumm - CC BY-SA 4.0
[10559], Österreich, Niedere Tauern, Donnersbacher Alpen, Morsbachhütte,
Weg zur hinteren Morsbachalm, an Gneisblock, ca. 1400 m.Leg.
et det. Erich Putzler. 06.08.1954.

Felix Schumm - CC BY-SA 4.0
[10559], Österreich, Niedere Tauern, Donnersbacher Alpen, Morsbachhütte,
Weg zur hinteren Morsbachalm, an Gneisblock, ca. 1400 m.Leg.
et det. Erich Putzler. 06.08.1954.

Felix Schumm - CC BY-SA 4.0
[10559], Österreich, Niedere Tauern, Donnersbacher Alpen, Morsbachhütte,
Weg zur hinteren Morsbachalm, an Gneisblock, ca. 1400 m.Leg.
et det. Erich Putzler. 06.08.1954.

Photo by E. Timdal. Source: Möller E.J., Timdal E., Haugan R., Bendiksby M. 2025. Integrative taxonomy and genus delimitation in the Rhizocarpaceae (lichenized Ascomycota). Fungal Syst. Evol., 16: 215-231. – CC BY-NC-ND
A–C. Rhizocarpon
hochstetteri, Norway, O-L-227846. Scale bars: A = 100 μm; B, C = 10 μm
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: rather common
Montane belt: rather rare
Dry submediterranean belt: very rare
Humid submediterranean belt: absent
Padanian area: absent
pH of the substrata:
| 1 | 2 | 3 | 4 | 5 |
Solar irradiation:
| 1 | 2 | 3 | 4 | 5 |
Aridity:
| 1 | 2 | 3 | 4 | 5 |
Eutrophication:
| 1 | 2 | 3 | 4 | 5 |
Poleotolerance:
| 0 | 1 | 2 | 3 |
Altitudinal distribution:
| 1 | 2 | 3 | 4 | 5 | 6 |
Rarity
absent
extremely rare
very rare
rare
rather rare
rather common
common
very common
extremely common
Loading data...
Occurrence data
Predictive map

