Halospora discrepans (Arnold) Hafellner

Bibl. Lichenol., 106: 87, 2011. Basionym: Polyblastia discrepans J. Lahm ex Arnold - Verh. zool.-bot. Ges. Wien, 18: 709, 1868.
Synonyms: Arthopyrenia subdiscrepans (Nyl.) Zahlbr.; Merismatium discrepans (J. Lahm ex Arnold) Triebel; Verrucaria subdiscrepans Nyl.
Distribution: N - TAA (Roux & al. 2002, Hafellner 2011, Brackel 2016). C- Sar (Brackel & Berger 2019).
Description: Thallus not visible, not lichenized, growing on endolithic lichens, especially Protoblastenia-species. Perithecia (pseudothecia) black, c. 0.2 mm across, one-third to half-immersed in the host. Involucrellum absent; exciple brown throughout, K+ darker brown, greenish blue around the ostiole; hamathecium of short pseudoparaphyses and periphyses forming a crown above the asci and lining the ostiolar canal, interascal filaments lacking, the hymenial gel I+ red, K/I+ blue. Asci 8-spored, subcylindrical to narrowly clavate, thick-walled when young, without ocular chamber, K/I-. Ascospores submuriform, dark brown, divided by oblique septa into (3-)4(-6) cells, subglobose to broadly ellipsoid, (10-)13-17(-20) x (7-)8.5-12(-14) µm, surrounded by a halo at least when young. Photobiont absent. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: a rather rare species, growing on the ascocarps of endolithic calcicolous lichens (especially Protoblastenia-species), mostly in upland areas. Most records are from the central European mountains, but there are also some records from sites at low elevations in other parts of Europe. For further details see Hafellner (2011).
Growth form: Lichenicolous fungus
Substrata: rocks
Reproductive strategy: mainly sexual
paras crustose lichens

Commonnes-rarity: (info)

Alpine belt: very rare
Subalpine belt: very rare
Oromediterranean belt: absent
Montane belt: very rare
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
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
Index Fungorum GBIF

http://fungi.myspecies.info/gallery/discrepans - Licence: CC BY-NC 3. Photo uploaded by Mark Powell


Source: http://fungi.myspecies.info/gallery/discrepans - Licence: CC BY-NC 3. Photo uploaded by Mark Powell


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_H/Texte_H2/Halospora_discrepans.htm
France, Notre Dame des neiges - Jura - (39) - Sur thalle de Protoblastenia rupestris établi sur calcaire
-
subsp. longispora


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_H/Texte_H2/Halospora_discrepans.htm
France, Notre Dame des neiges - Jura - (39) - Sur thalle de Protoblastenia rupestris établi sur calcaire
-
subsp. longispora


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_H/Texte_H2/Halospora_discrepans.htm
France, Notre Dame des neiges - Jura - (39) - Sur thalle de Protoblastenia rupestris établi sur calcaire
-
subsp. longispora