Staurothele geoica Zschacke

Hedwigia, 60: 5, 1918.
Synonyms:
Distribution: N - Frl. C - Tosc (TSB 35304). S - Cal (Puntillo & Puntillo 2004, Puntillo 2011), Si (Nimis & al. 1996b).
Description: Thallus crustose, thinly episubstratic, subgelatinous when wet, dark brown to dark greenish brown, consisting of minutely granulose goniocyst-like units with a brown pigment at surface. Perithecia black, forming projections 0.15-0.25(-0.3) mm across, partly immersed in thallus. Exciple brown throughout; involucrellum absent; hymenium colourless, I+ reddish; hymenial algae isodiametrical to shortly oblong; hamathecium of periphyses and periphysoids, interascal filaments absent. Asci 8-spored, clavate, the wall thickened above, with an ocular chamber, after dehiscence with a delicate extruded endotunica, I-, K/I-. Ascospores muriform, hyaline to yellowish brown when old, ellipsoid, 28-35(-37) x 11-18 μm. Photobiont chlorococcoid (Stichococcus), present in both thallus and hymenium. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: on soil amongst bryophytes and on plant debris on more or less calcareous substrata, apparently with a wide altitudinal range. This taxon, however, deserves further study.
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: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: very rare
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: very rare
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
Herbarium samples
Index Fungorum GBIF


P.L. Nimis CC BY-SA 04
TSB 20117



P.L.Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (38431)
2008.02.25



Domenico Puntillo - CC BY-SA 4.0
Italy



Domenico Puntillo - CC BY-SA 4.0
Italy



Domenico Puntillo - CC BY-SA 4.0
Italy



Domenico Puntillo - CC BY-SA 4.0
Italy


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