Abstract: Boletus gabretae Pit. was described by Pilát in 1968 from Czechoslovakia. It is close to B. junquilleus (Quél.) Boudier, but differs in the reticulated upper part of the stipe. Their affinities with other boletes are discussed. The Finnish locality at Åvensor, Korppoo, is near a limestone quarry.
Abstract: A polypore species, Skeletocutis jelicii Tortić & David, hitherto known only from Yugoslavia, is reported from Finland. It differs from all the other species of Skeletocutis Kotl. & Pouz. found in Finland by its monomitic hyphal system and small subglobose spores. The three collections were made from very decayed coniferous wood in protected areas.
S. jelicii is thoroughly redescribed and illustrated. Its distribution and ecology, and also the concept of the genus Skeletocutis are briefly discussed.
Abstract: Eight species are recognized in the subsection Scrobiculati in NW Europe: Lactarius scrobiculatus (Scop.: Fr.) Fr. , L. leonis Kytöv ., L. olivinus Kytöv., L. tuomikoskii Kytöv., L. auriolla Kytöv., L. resimus (Fr.) Fr., L. aquizonatus Kytöv. and L. citriolens Pouzar. Five of them are new and are described here. The distribution of each species in NW Europe is mapped, and their ecology and relationships are discussed.
Abstract: The maturation of the perithecia of the pathogenic pyrenomycete Linospora ceuthocarpa (Fr.) Lind, its spore liberation, mode of infection, and the development of symptoms on aspen leaves were investigated. The study also included the histological examination of mfected leaves and a description of the cultural characteristics of the fungus. Perithecia matured in the spring, spore liberation began in the third week of June, followed by dispersal and infection. Lesions appeared on aspen leaves by the third to fourth week of July. Fast growing semimature leaves were most susceptible.
Abstract: Cystoderma adnatifolium (Peck) Harmaja (Agaricales: Tricholomataceae) is reported from Spitzbergen (Svalbard) for the first time. A new species, Cystoderma arcticum Harmaja, is described from Spitzbergen. It belongs to the group of C. fallax Smith & Sing., but has larger spores than the other species of the group.
Abstract: The author describes the new species Sowerbyella brevispora Harmaja (Pezizales) from South Finland. It differs from the other species of the genus in the fulvous apothecia, smaller spores and thicker walls of the excipular hairs. S. brevispora was found among needles of Picea abies on non-calcareous soil. The new combination Sowerbyella bauerana (Cooke) Harmaja is also made.
Abstract: The relationships of the European poroid Hymenochaetales were assessed from an array of 20 characters: 14 morphological and microscopical features of the fruit body, cultural type and nuclear behaviour of the secondary mycelium, extractable styrylpyrone contents of the basidiocarp, electrophoretic protein patterns and type of enzymatic abi lity of the mycelium. Taxonomic information was retrieved in two ways: phenetic and phylogenetic.
As a result, the Hymenochaetales are divided into two suborders, Phaeolinae Fiasson & Niemelä and Hymenochaetinae Fiasson & Niemelä, the former comprising one family (Phaeolaceae Jül.) and the latter three (Hymenochaetaceae Donk, lnonotaceae Fiasson & Niemelä and Phellinaceae Jül.). The following genera are accepted to accommodate the European species which were formerly included in the genera of Inonotus and Phellinus: Inonotus Karst., Inocutis Fiasson & Niemelä (formerly the Inonotus rheades complex), Inonotopsis Parm., Phylloporia Murr. (P. ribis complex), Fomitiporia Murr. (P. robustus complex), Porodaedalea Murr. (P. pini complex), Ochroporus J. Schroet. (P. igniarius complex), Phellinidium (Kotl.) Fiasson & Niemelä (P. ferrugineofuscus and its allies), Phellinus Quél. (P. torulosus), Fuscoporia Murr. (P. ferreus and Its allies), and Fulvifomes Murr. (P. rimosus complex). Within these genera, 23 new combinations of species names are proposed. The concepts of the genera and families are emended, and the affinities of the Hymenochaetales to the other groups of fungi are discussed.
Abstract: Appearance of small initials of Gyromitra esculenta (Pers.) Fr. was studied in a Central Finnish spruce forest in connection of semi-cultivation experiments. An earlier report on the occurrence of autumnal initials was confirmed. The small initials were marked and their development was followed by photographing them in both the autumn and spring. These nodules were as small in December as the nodules two years earlier in October. The initials developed into young fruit bodies under the snow in spring, but not during an unusually warm autumn. The observations support the theory that the fruit body production is regulated by a mycochrome-like pigment depending on day length.
Abstract: 22 species of discomycetous fungi are reported from the timberline regions of Labrador, Quebec, Manitoba and Northwest Territories (Mackenzie District), Canada. Dasyscyphys leucostomus Rehm, Poculum firmum (Pers.: Fr) Dumont and Fimaria coprina Eckblad are new to North Amenca. Other interestmg records are Geopyxis cf. vulcanalis (Peck) Sacc. and Gloeotinia granigena (Quél.) T. Schumacher. The taxonomic status of Geopyxis majalis Fr. is discussed. The material includes possibly undescribed taxa of Dasyscyphella and Hyalopeziza.