Thelocarpon intermediellum Nyl.

Flora, 48: 261, 1865.
Synonyms: Thelocarpon intermixtulum Nyl.
Distribution: N - TAA (Nascimbene & al. 2007b).
Description: Thallus crustose, bright yellow-pruinose, mostly reduced to small (0.15-0.3 mm in diam.), scattered warts containing an apothecium. Apothecia frequent, perithecioid, rounded, without a thalline margin but semi-immersed in the warts, 0.15-0.25(-0.3) mm across, with a concave, not exposed disc (the warts opening though a small pore), the margin 30-45 μm thick in upper part, 15-25 μm thick in lower part, colourless in section. Hymenial gel I+ red; paraphyses absent, substituted by richly branched, easily detached periphyses 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, not thickened at apex. Ascospores 1-celled, hyaline, oblong-obtuse, slightly constricted in the middle, thin-walled, 3-4(-5) x 1-1.5 μm. 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 or chlorococcoid, rarely present only at the base of the thalline warts. Spot tests: thallus and apothecia K-, C-, KC-, P-. Chemistry: yellow pruina with pulvinic acid derivatives.
Note: a rarely-collected but apparently widespread ephemeral species of siliceous rocks and, occasionally, rotten wood, mostly in upland areas.
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
Oromediterranean belt: absent
Montane belt: extremely rare
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: absent
Dry mediterranean belt: absent


pH of the substrata:

(info)

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5

Solar irradiation:

(info)

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5

Aridity:

(info)

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4

5

Eutrophication:

(info)

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5

Poleotolerance:

(info)

0

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3

Altitudinal distribution:

(info)

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5




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