ITALIC 8.0

Thelocarpon imperceptum (Nyl.) Mig.

Flora von Deutschl., 2, 12: 4852 1927. Basionym: Athelium imperceptum Nyl. - Flora, 69: 463, 1886

Synonyms: Thelocarpon polysporum (Tomin) Tomin

Distribution:

Description: Thallus crustose, very thin and film-like, inconspicuous when dry but forming greenish spots when wet, the hyphae c. 0.5-0.75 μm thick, forming a loose network among soil particles in lower part and enclosing chlorococcoid algae in upper part. Ascocarps perithecioid, globose, (0.25–)0.3-0.42 across, fully to 3/4 immersed in soil, the 0.1-0.15 mm wide, dark brown to black apical part emerging. Exciple colourless in outer part, pale pink-brown in inner part, (35–)40-45(–50) μm thick, devoid of algae; paraphyses absent; periphyses simple or sparingly branched, (20–)27-30(–35) μm long, perpendicular to the uppermost part of the exciple; hymenial gel I–. Asci 200-300-spored, the wall I+ pale blue. Ascospores simple, hyaline, bacilliform, (5.5–)10-12(-14) x (2.5–)4-5.5(–6.3) μm. Photobiont chlorococcoid. Spot tests: K–, C–, KC-, P–, UV-, or UV+ indistinctly yellowish. Chemistry: without lichen substances.

Note: an ephemeral, pioneer terricolous lichen growing on clay to loamy soil in open situations, with a scattered distribution from Western Europe to Russia, but very easy to overlook. To be looked for in Italy.

Growth form: Crustose

Substrata: soil, terricolous mosses, and plant debris

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Pioneer species

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

Index Fungorum GBIF

Pier Luigi Nimis - CC BY-SA 4.0

TSB 32720

Pier Luigi Nimis - CC BY-SA 4.0

TSB 32720

Pier Luigi Nimis - CC BY-SA 4.0

TSB 32720

Pier Luigi Nimis - CC BY-SA 4.0

TSB 32720

Pier Luigi Nimis - CC BY-SA 4.0

TSB 32720