Verrucaria geophila Zahlbr.

Österr. bot. Z., 59: 317, 1909, nom. illegit. non Nyl.
Synonyms:
Distribution: C - Tosc (TSB 35321), Sar. S - Cal (Puntillo 1996), Si (Nimis & al. 1994).
Description: Thallus crustose, thinly episubstratic, smooth, grey-green when dry, green and slightly gelatinous when wet, continuous, ecorticate. Perithecia black, scattered or rarely crowded, largely immersed in lower part, sometimes hemispherically projecting with the uppermost part, globose to ovoid, with a shiny, flattened apical part, (0.5-)0.6-0.9 mm across. Involucrellum absent; exciple very thick, brown-black, carbonaceous, fragile, often thinner in lower part; hamathecium of periphyses and periphysoids, interascal filaments absent; hymenial gel amyloid, I+ blue. Asci 8-spored, cylindrical-clavate, degenerating early. Ascospores 1-celled, hyaline, ellipsoid or ovoid, 26-36 x 12-16 μm, often with a large oil droplet in the center. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: a rare species of slightly calciferous soil in dry Mediterranean grasslands. The name is illegitimate and would require conservation.
Growth form: Crustose
Substrata: soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: absent
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: very rare
Dry mediterranean belt: very rare

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


Curtis Randall Björk – CC BY-SA 4.0
Idaho, Hells Canhyon, Nez Perce County, lower slopes of Craig Mountain Date: 2010-06-03 On calcareous soil over shale, grassland on steep canyon slope



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (15664)
2001/12/03


Source: Servit, M 1949: Nove nebo mene zname druhy lisejnikove celedi Verrucariaceae. Species Verrucariacearum (Lichenes) novae vel minus cognitae. - Sbornik Narodniho Musea v Praze 5(9): 1-51. Tab.2 - Public Domain