Jackrogersella cohaerens (Pers.) L. Wendt, Kuhnert & M. Stadler, syn.: Annulohypoxylon cohaerens (Pers.) Y.M. Ju, J.D. Rogers & H.M. Hsieh, Sphaeria cohaerens Pers., Hypoxylon cohaerens (Pers.) Fr., Hypoxylon rutilum var. ericae Gonz. Frag., Hypoxylon atrorufum Ellis & Everh.DE: Zusammengedrngte Kohlenbeere, Schwarze BuchenkohlenbeereSlo.: ?Dat.: Nov. 21. 2008Lat.: 46.34042 Long.: 13.54176Code: Bot_314/2008_DSC5241Habitat: Mixed wood, Fagus sylvatica, Picea abies, Fraxinus ornus, Ostrya carpinifolia dominant trees; moderately inclined mountain slope, south aspect; relatively warm place; cretaceous clastic rock (flysh) bedrock, partly protected from direct rain by tree canopies; average precipitations ~ 3.000 mm/year, average temperature 8-10 deg C, elevation 525 m (1.750 feet), alpine phytogeographical region.Substratum: on bark of still standing, dead and rotten, partly decorticated Fagus sylvatica.Place: Bovec basin, east of Bovec, below Visna settlement, East Julian Alps, Posoje, Slovenia EC.Comments: Habit of the fungus on this pictures and substratum fit well to Jackrogersella cohaerens (Annulohypoxylon cohaerens). But several other taxa can be very similar. For example: Jackrogersella minutella (former Hypoxylon cohaerens var. microsporum) and Jackrogersella multiformis (former Annulohypoxylon multiforme) and a few others can have similar stromatal features. Microscopy is needed for a reliable determination. Tentative field identification often relies on host. Jackrogersella minutella is restricted to Quercus and Castanea, Jackrogersella multiformis grows mostly on Betula, Alnus and Corylus and Jackrogersella cohaerens is restricted to Fagus sylvatica. However, host specificity is rarely absolute. Since no microscopy was done for this observation, the determination remains unreliable.Ref.: (1)
www.123pilze.de/DreamHC/Download/ZusammenKohlebeere.htm (accessed Dec. 22. 2018)(2)
pyrenomycetes.free.fr/hypoxylon/html/Hypoxylon_cohaerens.htm (accessed Dec. 22.2018)(3) M.W.Beug, A.E. Bessette, A.R. Bessette, Ascomycete Fungi of North America, Uni.of Texas Press, Austin (2014), p 281. (4)
www.mycoquebec.org/bas.php?trie=A&l=l&nom=Annuloh... (accessed Dec. 22.2018)
