Basidiomycetes at the timberline in Lapland 2. An annotated checklist of the polypores of northeastern Finland

Abstract

Lapland 2. An annotated checklist of the polypores of northeastern Finland.-Karstenia 31:13-28. Seventy-seven polypores are listed from virgin forests in northeastern Finland, ten of which are classified as threatened in Finland. The host range and abundance of each species are given. The occurrences of threatened and also some abundant species are treated with special reference to their distribution and habitat ecology. Fungal species compositions of spruce, pine and birch forests are compared: 33 species were recorded growing on Picea abies subsp. obovata, 31 species on Pinus sylvesrris and 24 species on Betula pubescens. The economically most harmful pathogenic polypores found in the swdy area were Climacocystis borealis (Fr.

Notes on some rare polypores, found in Russia 2. Junghuhnia vitellina sp. nova, plus genera Cinereomyces and Skeletocutis

“…(Spirin & Shirokov 2002). Similar preferences were noted by Finnish authors (Kotiranta & Niemelä 1981, Renvall et al 1991. One collection is from dead basidiocarp of Phlebia centrifuga (LE 211400).…”

“…This species is extremely rare in the study area, found only once on very rotten pine trunk in old pine forest (11). As noted by Finnish authors (Renvall et al 1991, pine is certainly the favourite substrate in North Europe. Niemelä et al (2002) considered C. lenis a so-called kelo fungus-a species that favours long-ago died, fi nally fallen pine trees.…”

“…in Diplomitoporus. Niemelä (in Renvall et al 1991) transferred the latter in Skeletocutis, since it is characterized by white rot, dimitic hyphal system, fusiform cystidioles, and it has cylindrical and curved spores. The main differences distinguishing S. lenis from the core of Skeletocutis are soft-corky consistence of the basidiocarps and evident lack of gelatinization and absence of the characteristic thorn-like encrustations at the dissepiment edges.…”

New records of rare and threatened polypores in Finland

“…Now it has been refound in easternmost Finland on fallen, strongly decayed Populus tremula in moist and shady mixed forest. It is classified as endangered (Rassi et al 1992) This species was first recorded from Finland by Niemela (1982b), andRenvall et al (1991) reported two new collections from northeastern Finland; they are not repeated here. P. sajanensis seems to be an extreme rarity throughout its range: it is known from two collections in Sweden (Strid 1981, one in European Russia and three collections in Siberia (Parmasto 1962(Parmasto , 1967.…”

Phellinus species on Betula. Mating tests, RFLP analysis of enzymatically amplified rDNA, and relations to Phellinus alni

“…Parm. In Fennoscandia, Betula is cited as the main host of P. igniarius (Eriksson 1958;Niemela 1975;Niemela & Kotiranta 1982;Erkkila & Niemela 1986;Renvall et al 1991); besides , the taxon is found on Salix and numerous other trees . As well, in the eastern part of Europe and the territory of the former USSR Betula is reported as common host (Bondartsev 1953 ;Domanski et al 1973).…”