Myriolecis zosterae (Ach.) Śliwa, Zhao Xin & Lumbsch var. palanderi (Vain.) Śliwa

Polish Bot. Journal, 62, 1: 38, 2017.. 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
Distribution: N - Frl (Tretiach & Hafellner 2000), Ven (Nascimbene 2008c), TAA (Nascimbene 2008b), Lomb, Piem, VA (Matteucci & al. 2008c), Emil, Lig. C - Marc (Nimis & Tretiach 1999), Abr (Nimis & Tretiach 1999, Di Nuzzo & al. 2021, Gheza & al. 2021), Mol (Nimis & Tretiach 2004, Caporale & al. 2008). S - Bas (Nimis & Tretiach 1999).
Description: Thallus crustose, endosubstratic or thinly episubstratic, whitish to pale grey, sometimes poorly evident. Apothecia lecanorine, sessile, strongly constricted at base, 0.2-1.5(-3) mm across, with a brownish-black to olivaceous brown, but often densely white-grey-pruinose, mostly flat disc, and a thin, crenulate, white-pruinose thalline margin. Thalline exciple 60-140 μm thick, corticate, without ot with a few crystals only; 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, clavate, 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.
Note: a circumpolar, arctic-alpine lichen found on plant debris and mosses over calciferous substrata from the Oromediterranean belt to the Arctic zone.
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
Oromediterranean belt: rather rare
Montane belt: absent
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: absent
Dry mediterranean belt: absent

pH of the substrata:


Solar irradiation:








Altitudinal distribution:


Predictive model
Herbarium samples

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

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

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

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