A tiny Peltigera species, very similar to the common P. didactyla, from which it may be distinguished by the C+ red reaction of soralia a medulla. Both lichens are ecologically very similar. Peltigera extenuata is also a pioneer species that often grows on bare soil. Outside the Czech Republic, it has been found also on tree bases and mossy rocks. The species seems to be cosmopolitan, but its distribution in the Czech Republic and Europe is insufficiently studied as until recently, it was not commonly distinguished from P. didactyla. However, even the current data from the country suggest that P. extenuata is the rarer of the two species.
Literature: Malíček J., Palice Z. & Vondrák J. (2014): New lichen records and rediscoveries from the Czech Republic and Slovakia. – Herzogia 27: 257–284.taxonomic classification:
All records: 11, confirmed 11. One click on a selected square displays particular record(s), including their source(s).