Psorotichia murorum A. Massal.
Framm. Lichenogr.: 15, 1855.
Synonyms: Collemopsis murorum (A. Massal.) Stizenb.; Psorotichia arenaticola Eggerth
Description: Thallus crustose, areolate, homoiomerous, pseudoparenchymatous throughout, the hyphae 3-8 µm thick. Areoles 0.25-0.8(-1.2) mm wide, up to 0.3(-0.5) mm thick, contiguous, brownish black, epruinose, with an uneven, weakly granulose surface, attached by rhizohyphae. Apothecia lecanorine, at first immersed, then adnate to sessile, 2-6(-8) per areole, 0.1-0.4(-0.6) mm across, with an initially punctiform, then expanded, concave to flat, reddish brown to brown-black disc surrounded by a thick, smooth thalline margin. Proper exciple poorly differentiated, up to 10 µm wide laterally, formed by irregularly anastomosing hyphae; epithecium orange-brown, 10-15 µm high; hymenium colourless, (85-)100-120 µm high, K/I+ blue; paraphyses branched and anastomosing, with cylindrical cells, only slightly constricted at septa, 2-3 µm thick; hypothecium colourless, 30-50 µm high. Asci 8-spored, subclavate, with a very thin wall disintegrating or opening by apical ruptures, with an only indistinct amyloid cap, Lichina-type, Psorotichia subtype, 55-70 x 12-17 µm. Ascospores 1-celled, hyaline, ellipsoid, (9-)10-18(-20) x (5-)7-9(-10) µm. Photobiont cyanobacterial, chroococcoid, of a few cells measuring 6-12 x 3-7 µm, surrounded by a gelatinous sheath which is yellowish brown near the thallus surface. Spot tests: all negative. Chemistry: without lichen substances.
Growth form: Crustose
Substrata: rocks
Photobiont: cyanobacteria, filamentous (e.g. Nostoc, Scytonema)
Reproductive strategy: mainly sexual
On otherwise dry surfaces with short periods of water seepage after rain
Poorly known taxon in need of further study
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: absent
Montane belt: extremely rare
Dry submediterranean belt: rare
Humid submediterranean belt: very rare
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
Collezione lichenologica Abramo Massalongo del Museo di Storia Naturale G. Ligabue di Venezia - Autori: Seggi, Linda; Trabucco, Raffaella Proprietà: Fondazione Musei Civici di Venezia - CC BY-NC
Italy, Veneto, ad saxa et muros in Prov. Veronensi 1855
Felix Schumm - CC BY-SA 4.0
[ABL53572A], Taiwan, Taipei County, 25 km N of Taipei, seashore, on
volcanic rock, outcrop near Sanji. 25°17’21’’ N, 121°30’41’’ E, 0-5 m.
Leg. A. Aptroot (no 53572A), 22.10.2001, det.A. Aptroot, 2002, conf.
M. Schultz, 2007.
Felix Schumm - CC BY-SA 4.0
[ABL53572A], Taiwan, Taipei County, 25 km N of Taipei, seashore, on
volcanic rock, outcrop near Sanji. 25°17’21’’ N, 121°30’41’’ E, 0-5 m.
Leg. A. Aptroot (no 53572A), 22.10.2001, det.A. Aptroot, 2002, conf.
M. Schultz, 2007.
Source: Prieto M., Wedin M., Schultz M. 2024. Phylogeny, evolution and a re-classification of the Lichinomycetes. Studies in Mycology, 109: 595-655. - CC BY-NC-ND
Psorotichia murorum, granulose crustose thallus with indistinct areoles and grouped apothecia (Massalongo Lich. Ital. 300, M, isolectotype). Scale = 1 mm.
Felix Schumm - CC BY-SA 4.0
[ABL53572A], Taiwan, Taipei County, 25 km N of Taipei, seashore, on
volcanic rock, outcrop near Sanji. 25°17’21’’ N, 121°30’41’’ E, 0-5 m.
Leg. A. Aptroot (no 53572A), 22.10.2001, det.A. Aptroot, 2002, conf.
M. Schultz, 2007.
Felix Schumm - CC BY-SA 4.0
[ABL53572A], Taiwan, Taipei County, 25 km N of Taipei, seashore, on
volcanic rock, outcrop near Sanji. 25°17’21’’ N, 121°30’41’’ E, 0-5 m.
Leg. A. Aptroot (no 53572A), 22.10.2001, det.A. Aptroot, 2002, conf.
M. Schultz, 2007.
Felix Schumm - CC BY-SA 4.0
[ABL53572A], Taiwan, Taipei County, 25 km N of Taipei, seashore, on
volcanic rock, outcrop near Sanji. 25°17’21’’ N, 121°30’41’’ E, 0-5 m.
Leg. A. Aptroot (no 53572A), 22.10.2001, det.A. Aptroot, 2002, conf.
M. Schultz, 2007.
Felix Schumm - CC BY-SA 4.0
[ABL53572A], Taiwan, Taipei County, 25 km N of Taipei, seashore, on
volcanic rock, outcrop near Sanji. 25°17’21’’ N, 121°30’41’’ E, 0-5 m.
Leg. A. Aptroot (no 53572A), 22.10.2001, det.A. Aptroot, 2002, conf.
M. Schultz, 2007.
Growth form: Crustose
Substrata: rocks
Photobiont: cyanobacteria, filamentous (e.g. Nostoc, Scytonema)
Reproductive strategy: mainly sexual
On otherwise dry surfaces with short periods of water seepage after rain
Poorly known taxon in need of further study
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: absent
Montane belt: extremely rare
Dry submediterranean belt: rare
Humid submediterranean belt: very rare
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
Collezione lichenologica Abramo Massalongo del Museo di Storia Naturale G. Ligabue di Venezia - Autori: Seggi, Linda; Trabucco, Raffaella Proprietà: Fondazione Musei Civici di Venezia - CC BY-NC
Italy, Veneto, ad saxa et muros in Prov. Veronensi 1855
Felix Schumm - CC BY-SA 4.0
[ABL53572A], Taiwan, Taipei County, 25 km N of Taipei, seashore, on volcanic rock, outcrop near Sanji. 25°17’21’’ N, 121°30’41’’ E, 0-5 m. Leg. A. Aptroot (no 53572A), 22.10.2001, det.A. Aptroot, 2002, conf. M. Schultz, 2007.
Felix Schumm - CC BY-SA 4.0
[ABL53572A], Taiwan, Taipei County, 25 km N of Taipei, seashore, on volcanic rock, outcrop near Sanji. 25°17’21’’ N, 121°30’41’’ E, 0-5 m. Leg. A. Aptroot (no 53572A), 22.10.2001, det.A. Aptroot, 2002, conf. M. Schultz, 2007.
Source: Prieto M., Wedin M., Schultz M. 2024. Phylogeny, evolution and a re-classification of the Lichinomycetes. Studies in Mycology, 109: 595-655. - CC BY-NC-ND
Psorotichia murorum, granulose crustose thallus with indistinct areoles and grouped apothecia (Massalongo Lich. Ital. 300, M, isolectotype). Scale = 1 mm.
Felix Schumm - CC BY-SA 4.0
[ABL53572A], Taiwan, Taipei County, 25 km N of Taipei, seashore, on volcanic rock, outcrop near Sanji. 25°17’21’’ N, 121°30’41’’ E, 0-5 m. Leg. A. Aptroot (no 53572A), 22.10.2001, det.A. Aptroot, 2002, conf. M. Schultz, 2007.
Felix Schumm - CC BY-SA 4.0
[ABL53572A], Taiwan, Taipei County, 25 km N of Taipei, seashore, on volcanic rock, outcrop near Sanji. 25°17’21’’ N, 121°30’41’’ E, 0-5 m. Leg. A. Aptroot (no 53572A), 22.10.2001, det.A. Aptroot, 2002, conf. M. Schultz, 2007.
Felix Schumm - CC BY-SA 4.0
[ABL53572A], Taiwan, Taipei County, 25 km N of Taipei, seashore, on volcanic rock, outcrop near Sanji. 25°17’21’’ N, 121°30’41’’ E, 0-5 m. Leg. A. Aptroot (no 53572A), 22.10.2001, det.A. Aptroot, 2002, conf. M. Schultz, 2007.
