An inconspicuous lichen, characterized by a black thallus containing unknown unicellular cyanobacteria, very small apothecia (0.2–0.3 mm) which are punctiform at first and gradually opening, with red-brown discs and simple ellipsoid to widely ellipsoid ascospores. P. neglecta (= Forssellia neglecta Erichsen) is little known species, only recorded at regularly inundated rocks by the Elbe River near Hamburg in the past, from where it was also described. Interestingly, it grows on diverse substrates there, such as concrete, limestone and granite (Thüs & Schultz 2009). Its localities in the Middle Vltava region are ecologically analogous to its habitats by the Elbe River. Two specimens were found on granodiorites, which appeared lichen-free and another at a basic extrusive rock. Lately, it has also been found on the Týřovické skály rocks in the Křivoklát region within cyanolichen communities on limestone intrusions with periodic seepage of water running from rock crevices.
Literature: Thüs H. & Schultz M. (2009): Fungi: Lichens Pt. 1 (Süßwasserflora von Mitteleuropa / Freshwater Flora of Central Europe). – Spektrum Akademischer Verlag, Heidelberg. Malíček J. & Vondrák J. (2016): Zajímavé nálezy lišejníků ve středním Povltaví II. – saxikolní druhy. – Bryonora 58: 46–65.taxonomic classification:
All records: 5, confirmed 5. One click on a selected square displays particular record(s), including their source(s).