Polyozosia zosterae var. palanderi (Vain.) ined.

provisionally placed here, ICN Art. 36.1b. . Basionym: Lecanora palanderi Vain. - Arkiv Bot. 8(4): 48. 1909
Synonyms: Lecanora coerulescens (Baumg.) Arnold; Lecanora hagenii (Ach.) Ach. var. hagenii f. coerulescens (Baumg.) Hazsl.; Lecanora hagenii f. saxifragae Anzi; Lecanora hagenii var. fallax Hepp; Myriolecis hagenii (Ach.) Śliwa, Zhao Xin & Lumbsch var. fallax (Hepp) Hafellner; Myriolecis hagenii var. fallax (Hepp) Hafellner & Türk; Myriolecis zosterae (Ach.) Śliwa, Zhao Xin & Lumbsch var. palanderi (Vain.) Śliwa
Description: Thallus crustose, endosubstratic or thinly episubstratic, whitish to pale grey, often poorly evident. Apothecia lecanorine, sessile, strongly constricted at base, (0.2-)0.6-1.5(-3.5) mm across, with a brownish-black to olivaceous brown, but often white-grey-pruinose, mostly flat disc and a thin, crenulate, white-pruinose thalline margin. Thalline exciple 60-140 μm thick, corticate, the cortex indistinct or 30–40 μm thick laterally, up to 40–80 μm thick at base, without crystals or with a few crystals only; proper exciple poorly developed, to 10 μm wide; epithecium pale yellow to pale brown, with an epipsamma of crystals soluble in K and insoluble in N; hymenium colourless, 45-60 µm high; paraphyses 1-1.5 μm thick, simple or sparingly branched, the apical cells usually pigmented, up to 3 μm wide; hypothecium colourless or pale yellowish, 60-65 μm high. Asci 8-spored, elongate-clavate, very thin-walled, with a K/I+ blue, tall tholus penetrated by a faintly amyloid apical cushion, the wall K/I-, surrounded by a K/I+ blue outer layer, Lecanora-type. Ascospores 1-celled, hyaline, ellipsoid to narrowly ellipsoid, (8-)9-13(-16) x 4-6(-7) µm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Growth form: Crustose
Substrata: soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Poorly known taxon in need of further study

Commonnes-rarity: (info)

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

pH of the substrata:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Rarity

absent
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P.L. Nimis CC BY-SA 4.0
TSB 32820


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (34515)
2002/01/17


P.L. Nimis CC BY-SA 4.0
TSB 37381


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (32820)
2001/12/07