Usnea balcanica Bystr. – a new Usnea species in Poland (Ascomycota, Parmeliaceae)

Usnea balcanica Bystr., a new species in Poland, was collected in the Roztocze National Park in 1962. It grew on a branch of an old beech, in a light beech forest, in the Obrocz reserve. This very rare species is known so far only from the mountain forests of the Balkan Peninsula (11)

Usnea jørgenseniana Bystr. & Leśniewska sp. nova Usnea (subgen. Usnea, Parmeliaceae) in Sweden

Usnea jørgenseniana Bystr. & Leśniewska sp. nova, an epixilic species of bushy Usnea (Parmeliaceae) in Sweden, is similar to U. hirta var. minutissima (Mer.) Bystr., but the similarity to U. hirta is apparent. U. jørgenseniana is not a species from the foveatae Mot. section. The lack of soralia and a very small thallus (0.3–2.0 cm) makes it difficult to locate U. jørgenseniana in the section Comosae Mot. It colonizes exceptionally unfavorable climatic conditions, a coprophilous species. Collected by G. Ohrstedt in 1937. Dozens of specimens from one position

Usnea balcanica Bystr. – a new Usnea species in Poland (Ascomycota, Parmeliaceae)

Usnea balcanica Bystr., a new species in Poland, was collected in the Roztocze National Park in 1962. It grew on a branch of an old beech, in a light beech forest, in the Obrocz reserve. This very rare species is known so far only from the mountain forests of the Balkan Peninsula (11)

New and less known species of the genus Ramalina Ach. in Western Bieszczady

Listed in the paper are localities of occurrence of six Ramalina Ach. species found in herbarium material collected by T. Sulma. Three of the species: R. obtusata (Arn.) Bitt., R. baltica Lett. and R. fullax Mot. have not been noted from Bieszczady before

Bryoria forsteri (Lichenized Ascomycotina), a new species from Antarctica

Bryoria forsteri Olech and Bystr. is described as new to science. The species is endemic to Antarctica and differs from its nearest relative Bryoria chalybeiformis (L.) Brodo and D. Hawksw. in the lack of soralia; lack of proper pseudocyphellae; absence of fumarprotocetraric acid; in the different structure of the cortex and by having another kind of photobiont