Thelocarpon intermediellum Nyl.

Flora, 48: 261, 1865.
Synonyms: Thelocarpon intermixtulum Nyl.
Description: Thallus not lichenized, bright yellow-pruinose, mostly reduced to small, 0.15-0.3 mm wide, scattered fruiting warts. Ascocarps frequent, perithecioid, immersed in the warts, with a concave, not exposed disc (the warts opening though a small pore). Exciple colourless, 30-45 μm thick in upper part, 15-25 μm thick in lower part, without algae. Hymenial gel I+ red; paraphyses absent, periphyses 20-25(-30) μm long, richly branched, easily detached, arranged around the ostiole and on the sides. Asci many-spored, flask-shaped, persistent, thin-walled, the wall I+ pale blue, the base I+ brownish red, the apex not thickened. Ascospores 1-celled, hyaline, oblong-obtuse, slightly constricted in the middle, thin-walled, 3-4.5(-5) x 1-1.5 μm, sometimes biguttulate. Pycnidia rare, immersed in the warts, often yellow-pruinose in upper part, with a colourless wall. Conidia oblong-obtuse, simple to 2-septate. Photobiont absent (rarely some algae are present only at the base of the thalline warts). Spot tests: K-, C-, KC-, P-. Chemistry: yellow pruina with pulvinic acid derivatives.
Growth form: Crustose
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Pioneer species

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: extremely rare
Montane belt: extremely rare
Dry submediterranean belt: absent
Humid submediterranean belt: absent
Padanian area: 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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Rarity

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Predictive map

Felix Schumm - CC BY-SA 4.0
[17494], Germany, Nordrhein Westfalen, Bergisches Land, Solingen, Tal der Wupper, auf Kiefern-Totholz, ca. 150 m, MTB 4808/4. Leg. Dieter Gregor Zimmermann 14.05.2011, det. Zimmermann


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: GZU Herb.Hafellner (24934)
2003/04/28


Felix Schumm - CC BY-SA 4.0
[17494], Germany, Nordrhein Westfalen, Bergisches Land, Solingen, Tal der Wupper, auf Kiefern-Totholz, ca. 150 m, MTB 4808/4. Leg. Dieter Gregor Zimmermann 14.05.2011, det. Zimmermann


Felix Schumm - CC BY-SA 4.0
[17494], Germany, Nordrhein Westfalen, Bergisches Land, Solingen, Tal der Wupper, auf Kiefern-Totholz, ca. 150 m, MTB 4808/4. Leg. Dieter Gregor Zimmermann 14.05.2011, det. Zimmermann


Felix Schumm - CC BY-SA 4.0
[17494], Germany, Nordrhein Westfalen, Bergisches Land, Solingen, Tal der Wupper, auf Kiefern-Totholz, ca. 150 m, MTB 4808/4. Leg. Dieter Gregor Zimmermann 14.05.2011, det. Zimmermann


Felix Schumm - CC BY-SA 4.0
[17494], Germany, Nordrhein Westfalen, Bergisches Land, Solingen, Tal der Wupper, auf Kiefern-Totholz, ca. 150 m, MTB 4808/4. Leg. Dieter Gregor Zimmermann 14.05.2011, det. Zimmermann


Felix Schumm - CC BY-SA 4.0
[17494], Germany, Nordrhein Westfalen, Bergisches Land, Solingen, Tal der Wupper, auf Kiefern-Totholz, ca. 150 m, MTB 4808/4. Leg. Dieter Gregor Zimmermann 14.05.2011, det. Zimmermann


Felix Schumm - CC BY-SA 4.0
[17494], Germany, Nordrhein Westfalen, Bergisches Land, Solingen, Tal der Wupper, auf Kiefern-Totholz, ca. 150 m, MTB 4808/4. Leg. Dieter Gregor Zimmermann 14.05.2011, det. Zimmermann


Felix Schumm - CC BY-SA 4.0
[17494], Germany, Nordrhein Westfalen, Bergisches Land, Solingen, Tal der Wupper, auf Kiefern-Totholz, ca. 150 m, MTB 4808/4. Leg. Dieter Gregor Zimmermann 14.05.2011, det. Zimmermann


Felix Schumm - CC BY-SA 4.0
[17494], Germany, Nordrhein Westfalen, Bergisches Land, Solingen, Tal der Wupper, auf Kiefern-Totholz, ca. 150 m, MTB 4808/4. Leg. Dieter Gregor Zimmermann 14.05.2011, det. Zimmermann


Felix Schumm - CC BY-SA 4.0
[17494], Germany, Nordrhein Westfalen, Bergisches Land, Solingen, Tal der Wupper, auf Kiefern-Totholz, ca. 150 m, MTB 4808/4. Leg. Dieter Gregor Zimmermann 14.05.2011, det. Zimmermann


Felix Schumm - CC BY-SA 4.0
[17494], Germany, Nordrhein Westfalen, Bergisches Land, Solingen, Tal der Wupper, auf Kiefern-Totholz, ca. 150 m, MTB 4808/4. Leg. Dieter Gregor Zimmermann 14.05.2011, det. Zimmermann


Source: Salisbury G. 1966. A monograph of the lichen genus Thelocarpon. Lichenologist, 3: 175-196.