Contribution to the knowledge of some poorly known lichens in Poland. I. The genus Absconditella

Data on the poorly known lichen genus Absconditella in Poland are presented. A. pauxilla is reported as new to the country. New collections of the rare in Central Europe A. delutula and A. sphagnorum are provided. Additionally, new records of the very much overlooked A. lignicola are presented from many regions of Poland. Taxonomic remarks, known world distribution and habitat preferences for the species are included.

Additions to the biota of lichenicolous and lichenized fungi of Poland

Two lichenicolous fungi, Ceratobasidium bulbillifaciens and Sclerococcum phaeophysciae, and one lichen, Xanthoria aureola, are reported for the first time from Poland. For each species, the descriptions with notes on similar species, habitat preferences and general distribution are provided

The lichen family Parmeliaceae in Poland. II. The genus Cetrelia

In a study of the genus Cetrelia in Poland, four taxa have been identified, two of which, C. chicitae and C. monachorum, are reported for the first time from the country. All taxa differ in chemistry and subtle morphological characters. Cetrelia monachorum is the commonest member of the genus in Poland (237 records), whereas C. chicitae is known only from 6 records. All taxa are endangered, and three, C. cetrarioides, C. chicitae and C. olivetorum, appear to be critically so, thus deserving the category CR; although C. monachorum is the most frequent, it is not common and should be treated as endangered (EN). The distribution of all taxa, their habitat requirements, as well as morphology and secondary chemistry, are discussed

The lichen biota of the Drawieński National Park (NW Poland, Western Pomerania)

The whole known lichen biota of the Drawieński National Park is presented. In total 290 species (262 lichenized, 25 lichenicolous and 3 lichen-related, saprotrophic fungi) are listed. Trichonectria anisospora and Milospium lacoizquetae are reported as new to Poland. Lecanora stenotropa and Phaeophyscia pusilloides are reported for the first time from Polish lowlands. The most lichenologically interesting and richest habitat complexes are the river valleys with their beech slope forests, their alluvial forests and their fast running rivers. Further habitats of high nature conservation value are roadside trees and pine forests, which inhabit a rich lichen biota as well.

The lichen family Parmeliaceae in Poland. III. Parmelia serrana, new to Poland

Parmelia serrana A. Crespo, M.C. Molina & D. Hawksw. is reported here for the first time from Poland. The species has been recorded from more than 20 localities and exclusively on the bark of trees. Its general distribution, habitat requirements, morphology, secondary chemistry are provided and the differences between this species and similar taxa, especially P. saxatilis and P. ernstiae, are discussed

Rinodina griseosoralifera, a lichen species new to the Western Carpathians

Rinodina griseosoralifera is reported for the first time from Poland and the Western Carpathians. It is known there from the Gorce Mts, only locality up to now. Details of the chemistry, morphology and general distribution are provided and similar taxa are discussed

The lichen genus Pertusaria in Poland I. P. multipuncta and P. ophthalmiza

The paper presents results of study on two morphologically very similar lichens in Poland, P. multipuncta (Turner) Nyl. and P. ophthalmiza (Nyl.) Nyl. (Pertusariales, Ascomycota). Previously, specimens were determined using only thallus characters and spot test reaction, with no data on lichen substances. This led to several misidentifications. After the revision of all available material of P. multipuncta from Poland it appeared to be reported correctly only from one locality in Gorce Mts. Most of other specimens belong to P. ophthalmiza, which has not been recorded in Polish lichenological literature until 2008