Fuscidea austera (Nyl.) P. James

in Hawksworth & al., Lichenologist, 12: 106, 1980. Basionym: Lecanora austera Nyl. - Flora, 57: 309, 1874.
Synonyms: Fuscidea aggregata (Flot.) V. Wirth & Vězda; Fuscidea aggregatilis (Grummann) V. Wirth & Vězda; Fuscidea taeniarum (Malme) V. Wirth & Vězda; Lecidea aggregata (Flot.) H. Magn. non Chevall.; Lecidea aggregatilis Grummann
Distribution: N - TAA.
Description: Thallus crustose, episubstratic, continuous to rimose, pale grey to grey-brown, often delimited by a black prothallus, the areoles 0.2-0.4(-0.5) mm wide, contiguous, thin, slightly to strongly convex. Medulla I-. Apothecia lecideine, 0.5-2 mm across, often gathered in up to 3 mm wide clusters, sessile, at first rounded but soon very irregular in outline, with a black-brown, flat, sometimes thinly pruinose disc, and a usually slightly paler, persistent, strongly wavy proper margin. Proper exciple brown in outer part, paler within; epithecium brown; hymenium colourless or pale brown in upper part, 55-75 μm high; paraphyses weakly coherent, simple or sparingly branched in upper part, 1.5-2 μm thick at mid-level, the apical cell clavate, to 4 μm wide; hypothecium colourless. Asci 8-spored, clavate, with a thin external and internal K/I+ dark blue cap surrounded by a thick K/I+ pale blue apical cap, and with a K/I- apical tube in tholus, Fuscidea-type. Ascospores 1-celled, hyaline broadly ellipsoid to subglobose, (6-)9-12(-13) x 6.5-9 μm. Pycnidia black-brown in upper part. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-; apothecia UV+ bluish white. Chemistry: thallus without lichen substances; apothecia with divaricatic acid.
Note: on steeply inclined to rain-sheltered surfaces of hard siliceous rocks in upland areas; in Italy hitherto reported only from South Tyrol.
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: extremely rare
Subalpine belt: very rare
Oromediterranean belt: absent
Montane belt: very 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
INDEX FUNGORUM GBIF DOLICHENS


Felix Schumm - CC BY 4.0
[VZ1397], Hungaria. Montes Matra, regio montis Kékes, loco Disnókô dicto, 700 m. Ad saxa trachytica loco ventoso. Leg. A. Kiszely et A. Vezda. EX A. VEZDA LICHENES SELECTI EXSICCATI NR. 1397. As Fuscidea aggregatilis



Felix Schumm - CC BY 4.0
[VZ1397], Hungaria. Montes Matra, regio montis Kékes, loco Disnókô dicto, 700 m. Ad saxa trachytica loco ventoso. Leg. A. Kiszely et A. Vezda. EX A. VEZDA LICHENES SELECTI EXSICCATI NR. 1397. As Fuscidea aggregatilis


Mark Powell CC BY-SA-NC Source: http://fungi.myspecies.info/all-fungi/fuscidea-austera