Ochrolechia xanthostoma (Sommerf.) K. Schmitz & Lumbsch

in Schmitz & al., Acta Bot. Fenn., 150: 160, 1994. Basionym: Porina xanthostoma Sommerf. - K. Svenska Vetensk.-Akad. Handl.: 115, 1824 (1823).
Synonyms: Aspicilia poriniformis (Nyl.) Arnold; Pertusaria poriniformis (Nyl.) Clauzade & Cl. Roux; Pertusaria xanthostoma (Sommerf.) Fr.
Distribution: N - Lomb (Jatta 1909-1911), Piem, Emil (Fariselli & al. 2020).
Description: Thallus crustose, episubstratic, white to pale grey, sometimes poorly visible, continuous and membranous to rimose or indistinctly areolate, sometimes farinose. Apothecia perithecioid, immersed in convex, 0.4-0.7(-1.5) mm wide, constricted thalline warts, 1-4(-6) per wart, 0.2-0.4 mm across, the disc punctiform, pale pinkish brown. Epithecium reddish brown, K-; hymenium and hypothecium colourless. Asci 4-spored, with thick, amyloid walls, Pertusaria-type. Ascospores 1-celled, hyaline but sometimes torning pale brown when overmature, ellipsoid, (35-)55-85 x (22-)30-40(-55) µm, with a smooth, 1-1.5 µm thick wall. Photobiont chlorococcoid. Spot tests: thallus K- C-, KC+ pink (especially around the apothcia), P-, UV+ white. Chemistry: alectoronic and α-collatolic acids.
Note: on bark, but also on plant debris, more rarely on siliceous rocks in upland areas. The Italian records are rather dubious (see also Nimis 1993: 520).
Growth form: Crustose
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

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


Felix Schumm CC BY-SA 4.0
[19218], New Zealand, South Island, Canterbury, Porters Pass, SW slopes of Foggy Peak, Torlesse Range, on debris in subalpine heath, 1000 m. Leg. J.A. Elix (19034) & J. Johnston, 8.03.1985. LICH. AUSTRALASICI EXS. 214, as Pertusaria xanthostoma



Felix Schumm – CC BY-SA 4.0
[19218], New Zealand, South Island, Canterbury, Porters Pass, SW slopes of Foggy Peak, Torlesse Range, on debris in subalpine heath, 1000 m. Leg. J.A. Elix (19034) & J. Johnston, 8.03.1985. LICH. AUSTRALASICI EXS. 214, as Pertusaria xanthostoma



Felix Schumm – CC BY-SA 4.0
[19218], New Zealand, South Island, Canterbury, Porters Pass, SW slopes of Foggy Peak, Torlesse Range, on debris in subalpine heath, 1000 m. Leg. J.A. Elix (19034) & J. Johnston, 8.03.1985. LICH. AUSTRALASICI EXS. 214, as Pertusaria xanthostoma



Felix Schumm – CC BY-SA 4.0
[19218], New Zealand, South Island, Canterbury, Porters Pass, SW slopes of Foggy Peak, Torlesse Range, on debris in subalpine heath, 1000 m. Leg. J.A. Elix (19034) & J. Johnston, 8.03.1985. LICH. AUSTRALASICI EXS. 214, as Pertusaria xanthostoma



Felix Schumm – CC BY-SA 4.0
[19218], New Zealand, South Island, Canterbury, Porters Pass, SW slopes of Foggy Peak, Torlesse Range, on debris in subalpine heath, 1000 m. Leg. J.A. Elix (19034) & J. Johnston, 8.03.1985. LICH. AUSTRALASICI EXS. 214, as Pertusaria xanthostoma



Felix Schumm – CC BY-SA 4.0
[19218], New Zealand, South Island, Canterbury, Porters Pass, SW slopes of Foggy Peak, Torlesse Range, on debris in subalpine heath, 1000 m. Leg. J.A. Elix (19034) & J. Johnston, 8.03.1985. LICH. AUSTRALASICI EXS. 214, as Pertusaria xanthostoma



Felix Schumm – CC BY-SA 4.0
[19218], New Zealand, South Island, Canterbury, Porters Pass, SW slopes of Foggy Peak, Torlesse Range, on debris in subalpine heath, 1000 m. Leg. J.A. Elix (19034) & J. Johnston, 8.03.1985. LICH. AUSTRALASICI EXS. 214, as Pertusaria xanthostoma



Felix Schumm – CC BY-SA 4.0
[19218], New Zealand, South Island, Canterbury, Porters Pass, SW slopes of Foggy Peak, Torlesse Range, on debris in subalpine heath, 1000 m. Leg. J.A. Elix (19034) & J. Johnston, 8.03.1985. LICH. AUSTRALASICI EXS. 214, as Pertusaria xanthostoma



Felix Schumm – CC BY-SA 4.0
[19218], New Zealand, South Island, Canterbury, Porters Pass, SW slopes of Foggy Peak, Torlesse Range, on debris in subalpine heath, 1000 m. Leg. J.A. Elix (19034) & J. Johnston, 8.03.1985. LICH. AUSTRALASICI EXS. 214, as Pertusaria xanthostoma



Felix Schumm – CC BY-SA 4.0
[19218], New Zealand, South Island, Canterbury, Porters Pass, SW slopes of Foggy Peak, Torlesse Range, on debris in subalpine heath, 1000 m. Leg. J.A. Elix (19034) & J. Johnston, 8.03.1985. LICH. AUSTRALASICI EXS. 214, as Pertusaria xanthostoma



Felix Schumm – CC BY-SA 4.0
[19218], New Zealand, South Island, Canterbury, Porters Pass, SW slopes of Foggy Peak, Torlesse Range, on debris in subalpine heath, 1000 m. Leg. J.A. Elix (19034) & J. Johnston, 8.03.1985. LICH. AUSTRALASICI EXS. 214, as Pertusaria xanthostoma


Erichsen C.F.E. 1936. Pertusariaceae. - In: Dr. L. Rabenhorsts Kryptogamenflora von Deutschland, Österreich und der Schweiz. Bd. IX, Abt. 5, T. 1. Akad. Verlagsges., Leipzig, pp. 321-512, 513-728. - Public Domain



Felix Schumm – CC BY-SA 4.0
[19218], New Zealand, South Island, Canterbury, Porters Pass, SW slopes of Foggy Peak, Torlesse Range, on debris in subalpine heath, 1000 m. Leg. J.A. Elix (19034) & J. Johnston, 8.03.1985. LICH. AUSTRALASICI EXS. 214, as Pertusaria xanthostoma