Rinodina archaea (Ach.) Arnold

Flora, 64: 195, 1881. Basionym: Parmelia sophodes var. archaea Ach. - Meth. Lich: 156, 1803.
Synonyms: Diploicia trevisanii (Hepp) A. Massal. non auct.; Lecanora archaea (Ach.) Harm.; Lecanora sophodes var. laevigata Ach.; Rinodina archaea f. aggregata H. Magn.; Rinodina archaea f. paupera H. Magn.; Rinodina exigua var. lecideoides (Nyl.) Arnold; Rinodina laevigata (Ach.) Malme; Rinodina lecideoides (Nyl.) Mig.; Rinodina lecideoides var. cinerea H. Magn.; Rinodina subobscura H. Magn.; Rinodina trevisanii (Hepp) Körb. non auct.
Distribution: N - Ven, TAA (Mayrhofer & Sheard 2007, Nascimbene & al. 2007b, 2022), Lomb (Mayrhofer & Sheard 2007), Piem, Emil (Nimis & al. 1996, Fariselli & al. 2020). C - Tosc (Mayrhofer & Sheard 2007), Sar (Giralt & Mayrhofer 1995, Zedda & Sipman 2001, Mayrhofer & Sheard 2007). S - Cal (Giralt & Mayrhofer 1995, Puntillo 1996).
Description: Thallus crustose, episubstratic, thin to thick, rimose or areolate, the areoles up to 0.6-1 mm wide, flat to wart-like, dark grey, grey-brown to dark copper-brown, dull. Apothecia lecanorine, subimmersed to adnate, abundant, often contiguous and angular by mutual compression, 0.3-0.7(-0.9) mm across, with a dark reddish brown to brown-black, flat to rarely convex disc, a thin, entire, persistent thalline margin and often a parathecial ring within the thalline margin. Thalline exciple corticate, the cortex paraplectenchymatous, 5-10 µm wide, I- or I+ blue; epithecium red-brown; hymenium colourless, 60-100(-120) µm high; paraphyses 1.5-2.5(-3) µm thick at mid-level, not conglutinate, the apical cells up to 3.5-5(-7.5) µm wide, heavily pigmented; hypothecium colourless, 40-80 µm high. Asci 8-spored, cylindrical-clavate, the K/I+ blue tholus penetrated by a faintly amyloid apical cushion with parallel or diverging flanks, the wall K/I-, surrounded by a K/I+ blue outer layer, Lecanora-type. Ascospores 1-septate, brown, ellipsoid, (15-)17-20(-25) x (7-)8-10(-12) µm, Physconia-type, the wall smooth to minutely warted, the torus always well-developed, with an ontogeny of type A (apical wall thickening after septum formation). Photobiont chlorococcoid. Spot tests: cortex and medulla K-, C-, KC-, P-, UV-. Chemistry: zeorin and an unidentified substance (traces).
Note: a mainly temperate lichen, typically lignicolous but also rarely occurring on bark, on basal parts of broad-leaved trees, more rarely of conifers, in open woodlands; exceptionally also found on siliceous rocks; optimum in the montane belt.
Growth form: Crustose
Substrata: rocks, bark, and lignum
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: rare
Submediterranean belt: very rare
Padanian area: absent
Humid submediterranean belt: very rare
Humid mediterranean belt: absent
Dry mediterranean belt: 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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Predictive model
Herbarium samples

Ulrich Kirschbaum
Central Europe; Switzerland: Alps. on Fraxinus excelsior



Curtis Randall Björk – CC BY-SA 4.0
British Columbia, Thompson Plateau, near Kamloops Date: October, 2006 Photographed from specimen, (Björk 13322, UBC), on conifer log in dry, open forest



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (13462)
2001/11/29



P.L. Nimis CC BY-SA 4.0
TSB 13462



P.L. Nimis CC BY-SA 04
TSB 13462