Polyblastia deplanata Arnold

Verh. zool.-bot. Ges. Wien, 37: 128, 1887.
Synonyms:
Description: Thallus crustose, endosubstratic or thinly episubstratic, continuous to irregularly rimose around the perithecia, whitish grey. Perithecia black, 0.4-0.5 mm across, 1/2-1/3 immersed and leaving pits in the rock, with a distinctly flattened apex. Involucrellum rather thick, limited to the upper half of the perithecium; exciple brown in upper part, colourless in lower part; hamathecium of periphyses and periphysoids, interascal filaments absent; hymenial gel hemiamyloid, I+ red (I+ blue at very low concentrations of I), K/I+ blue. Asci 8-spored, clavate, K/I-, fissitunicate, the wall thickened above, with a broad ocular chamber, dehiscent by extrusion of an endotunica to form a delicate rostrum. Ascospores muriform, with up to 8 transverse septa and up to 4 longitudinal septa, hyaline, ellipsoid, pointed at one end, 30-40(-42) x 14-18(-20). Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Poorly known taxon in need of further study

Commonnes-rarity: (info)

Alpine belt: very rare
Subalpine belt: extremely rare
Montane belt: absent
Dry submediterranean belt: absent
Humid submediterranean belt: absent
Padanian area: absent

pH of the substrata:

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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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Rarity

absent
extremely rare
very rare
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rather rare
rather common
common
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© The Trustees of the Natural History Museum, London CC BY-SA 4.0


Source: Zschacke, H. (1934) Epigloeaceae, Verrucariaceae und Dermatocarpaceae. In: Dr. L. Rabenhorst‘s Kryptogamen-Flora, Band 9, Abt. 1, Teil 1. Akademische Verlagsgesellschaft, Leipzig, 695 pp. - Public Domain


© The Trustees of the Natural History Museum, London CC BY-SA 4.0