Cetraria madreporiformis (Ach.) Müll. Arg.
Flora, 53: 325, 1870. Basionym: Dufourea madreporiformis Ach. - Lichenogr. Univ.: 525, 1810.
Synonyms: Allocetraria madreporiformis (Ach.) Kärnefelt & A. Thell; Dactylina madreporiformis (Ach.) Tuck.; Evernia madreporiformis (Ach.) Fr.
Description: Thallus fruticose, greenish to yellowish green, sometimes turning brown in sun-forms, sparsely isotomic-dichotomously branching from near the base, forming tufts. Branches soft, slightly foveolate, ascending to erect, rarely prostrate in forms of wind-swept ridges, subterete or slightly irregular, up to 4 cm tall, 1-2 mm thick. Cortex paraplectenchymatous; medulla white, lax, arachnoid throughout. Apothecia extremely rare (not seen in Italian material), zeorine, subterminal, with a pale brown disc. Asci 8-spored, narrowly clavate, with a small axial body and a distinct, K/I+ blue ring-structure in the rather large tholus, approaching the Lecanora-type. Ascospores 1-celled, thick-walled, broadly ellipsoid to subglobose, 6-10 x 4-8 µm. Pycnidia dark, immersed to slightly projecting. Conidia thread-like, slightly curved, swollen at one end, 13-20 x 0.5-1 µm. Photobiont chlorococcoid. Spot tests: cortex K-, C-, KC+ yellowish, P-; medulla K-, C-, KC-, P-. Chemistry: cortex with usnic acid; medulla with lichesterinic acid.
Growth form: Fruticose
Substrata: soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly asexual, by thallus fragmentation
Commonnes-rarity: (info)
Alpine belt: rather rare
Subalpine belt: extremely rare
Montane belt: absent
Dry submediterranean belt: absent
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
Source: Elvebakk, A., Bjerke, J.W. & Nilsen, L. 2018. The lichen Allocetraria madreporiformis in high-arctic steppes on Svalbard: a result of out-of-Tibet migration? Graphis Scripta 30 (1): 1–11. Oslo. ISSN 2002-4495. - CC BY-4.0
Allocetraria madreporiformis. The specimen Elvebakk 01:145 photographed in the field.
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (9929)
2002/01/02
Curtis Randall Björk – CC BY-SA 4.0
Near the shore of Hope Bay, Nunavut, central Canadian Arctic, Northwest Territories, Canada
20.07.2014
Juri Nascimbene – CC BY-SA 4.0; Owner: Department of ùLife Sciences, University of Trieste
Mt. Majella, Abruzzo, Italy
P.L. Nimis CC BY-SA 4.0
TSB 41410
P.L. Nimis CC BY-SA 04
TSB 43799
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (9929)
2002/01/02
P.L. Nimis CC BY-SA 04
TSB 43799
P.L. Nimis CC BY-SA 04
TSB 36912
P.L. Nimis CC BY-SA 04
TSB 36913
P.L. Nimis CC BY-SA 04
TSB 36913
P.L. Nimis CC BY-SA 04
TSB 43799
Felix Schumm - CC BY 4.0
[VZ1728], URSS. Caucasus Magnus. Ad latera occidentalia montis
Elbrus, loco Krugozor dicto, 3000-3100 m. Supra plantas destructas in
rupibus. Leg. A. Vezda, 21.6.1980. EX A. VEZDA LICHENES SELECTI
EXSICCATI NR. 1728.
Felix Schumm - CC BY 4.0
[VZ1728], URSS. Caucasus Magnus. Ad latera occidentalia montis
Elbrus, loco Krugozor dicto, 3000-3100 m. Supra plantas destructas in
rupibus. Leg. A. Vezda, 21.6.1980. EX A. VEZDA LICHENES SELECTI
EXSICCATI NR. 1728.
Felix Schumm - CC BY 4.0
[VZ2148], URSS. Asia centralis, Kirghizia: montes Titan-shan, iugum
Kirghiziski khrebet, invalle fluminis Ala-Archa, 27 km ad australem ab
oppido Franze, 2000-2200 m. Ad terram humosam in rupidus. Leg. V.
Vašák 28.4.1986, det. A. Vezda. EX A. VEZDA LICHENES SELECTI
EXSICCATI NR. 2148.
Felix Schumm - CC BY 4.0
[VZ2148], URSS. Asia centralis, Kirghizia: montes Titan-shan, iugum
Kirghiziski khrebet, invalle fluminis Ala-Archa, 27 km ad australem ab
oppido Franze, 2000-2200 m. Ad terram humosam in rupidus. Leg. V.
Vašák 28.4.1986, det. A. Vezda. EX A. VEZDA LICHENES SELECTI
EXSICCATI NR. 2148.
Growth form: Fruticose
Substrata: soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly asexual, by thallus fragmentation
Commonnes-rarity: (info)
Alpine belt: rather rare
Subalpine belt: extremely rare
Montane belt: absent
Dry submediterranean belt: absent
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
Source: Elvebakk, A., Bjerke, J.W. & Nilsen, L. 2018. The lichen Allocetraria madreporiformis in high-arctic steppes on Svalbard: a result of out-of-Tibet migration? Graphis Scripta 30 (1): 1–11. Oslo. ISSN 2002-4495. - CC BY-4.0
Allocetraria madreporiformis. The specimen Elvebakk 01:145 photographed in the field.
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (9929)
2002/01/02
Curtis Randall Björk – CC BY-SA 4.0
Near the shore of Hope Bay, Nunavut, central Canadian Arctic, Northwest Territories, Canada
20.07.2014
Juri Nascimbene – CC BY-SA 4.0; Owner: Department of ùLife Sciences, University of Trieste
Mt. Majella, Abruzzo, Italy
P.L. Nimis CC BY-SA 4.0
TSB 41410
P.L. Nimis CC BY-SA 04
TSB 43799
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (9929)
2002/01/02
P.L. Nimis CC BY-SA 04
TSB 43799
P.L. Nimis CC BY-SA 04
TSB 36912
P.L. Nimis CC BY-SA 04
TSB 36913
P.L. Nimis CC BY-SA 04
TSB 36913
P.L. Nimis CC BY-SA 04
TSB 43799
Felix Schumm - CC BY 4.0
[VZ1728], URSS. Caucasus Magnus. Ad latera occidentalia montis Elbrus, loco Krugozor dicto, 3000-3100 m. Supra plantas destructas in rupibus. Leg. A. Vezda, 21.6.1980. EX A. VEZDA LICHENES SELECTI EXSICCATI NR. 1728.
Felix Schumm - CC BY 4.0
[VZ1728], URSS. Caucasus Magnus. Ad latera occidentalia montis Elbrus, loco Krugozor dicto, 3000-3100 m. Supra plantas destructas in rupibus. Leg. A. Vezda, 21.6.1980. EX A. VEZDA LICHENES SELECTI EXSICCATI NR. 1728.
Felix Schumm - CC BY 4.0
[VZ2148], URSS. Asia centralis, Kirghizia: montes Titan-shan, iugum Kirghiziski khrebet, invalle fluminis Ala-Archa, 27 km ad australem ab oppido Franze, 2000-2200 m. Ad terram humosam in rupidus. Leg. V. Vašák 28.4.1986, det. A. Vezda. EX A. VEZDA LICHENES SELECTI EXSICCATI NR. 2148.
