Teloschistaceae of the localities Velká kotlina and Petrovy kameny in the Hrubý Jeseník Mts of the localities Velká kotlina and Petrovy kameny in the Hrubý Jeseník Mts
Abstract
Twenty-three species of Teloschistaceae have been recorded in alpine/subalpine habitats at two botanically well-known localities in the Hrubý Jeseník Mts (Czech Republic, N Moravia): the Velká kotlina glacial cirque formed by phyllite rocks (17 species) and the gneiss rock Petrovy kameny (10 species). Both localities are locally enriched by calcium carbonate intrusions and are regarded as regional diversity hot-spots of Teloschistaceae.
Two species have not been recently confirmed: Bryoplaca sinapisperma (recorded in 1961) and Calogaya schistidii (recorded in 1879 only). Three records are considered dubious: Caloplaca fimbriata (unclear name), Leproplaca cirrochroa and Xanthomendoza fallax.
Valuable recently recorded species are Blastema ammiospila, Caloplaca scabrosa, Caloplaca subalpina, Leproplaca obliterans and Rusavskia sorediata. The first three species have no other known occurrences in the Czech Republic.
We have generated ITS nrDNA sequences to confirm the identifications of Athallia holocarpa, Calogaya arnoldii, Flavoplaca citrina, F. flavocitrina, Rufoplaca arenaria and a sterile specimen of Caloplaca chlorina. The predominantly saxicolous species Athallia holocarpa and Flavoplaca citrina are also muscicolous at the Petrovy kameny rock.
On the contrary, the muscicolous, epiphytic or epixylic species Blastema ammiospila was also recorded directly on stone. We have found a useful character for distinguishing between the two recorded Flavoplaca species: soralia often originate from the upper surface of areoles in F. citrina, but always from the margins of areoles/squamules in F. flavocitrina.