Authors: Härkönen, Marja & Koponen, Hilkka
Journal: Karstenia, Volume 18 (1978), Issue 2, pages 58-62.
Doi: https://doi.org/10.29203/ka.1978.140
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Abstract:  Cereal seeds from 16 localities in Finland were grown in 1480 moist chamber cultures. Six species of Myxomycetes emerged. Three are new to Finland: Didymium comatum (A. Lister) Nann.-Brem., D. cf. dubium Rost. and D. iridis (Ditmar) Fries. The others are: Physarum apiculosporum Härkönen, Didymium dijforme (Pers.) S. F. Gray and D. squamulosum (Alb. & Schw.) Fries. The assortment of species is smaller and differs distinctly from that emerging on bark from living trees in moist chambers.
Myxomycetous spores are more resistant to drying than those of the other fungi on grain. On the other hand, slime moulds develop most oten in the same dishes where the other fungi are most abundant.

Authors: Harmaja, Harri
Journal: Karstenia, Volume 18 (1978), Issue 2, pages 57.
Doi: https://doi.org/10.29203/ka.1978.139
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Abstract:  Descriptions are given of the following new cupulate species of Helvella St.-Am. (Pezizales): H. hyperborea Harmaja (type from Finland), H. oblongispora Harmaja (type from the Federal Republic of Germany), and H. pedunculata Harmaja (type from Finland). Geopyxis verruculosa Sacc. (Peziza verruculosa Berk. & Curt. non al.) is transferred to Helvella as H. verruculosa (Sacc.) Harmaja, n. comb. Paxina recurvum Snyder is transferred to Gyromitra Fr. as G. recurva (Snyder) Harmaja, n. comb.

Authors: Harmaja, Harri
Journal: Karstenia, Volume 18 (1978), Issue 2, pages 55-56.
Doi: https://doi.org/10.29203/ka.1978.138
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Abstract:  It is confirmed that Phaeomarasmius conjragosus (Fr.) Sing. should be included in the genus Tubaria (W.G. Smith) Gill. The new combination Tubaria confragosa (Fr.) Harmaja is made. In both T. furfuracea (Fr.) Gill. and T. confragosa, the walls of the spores and basidia are reported cyanophilic and the spores binucleate.

Authors: Harmaja, Harri
Journal: Karstenia, Volume 18 (1978), Issue 2, pages 49-54.
Doi: https://doi.org/10.29203/ka.1978.137
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Abstract:  The genus Lepista (Fr.) W.G. Smith sensu Harmaja (Agaricales) is divided into two subgenera and seven sections. The subgenera are distinguished by the degree of spore wall cyanophily and different ability of the mycelium to produce nitrite in culture. A short note is given on the responses of spores and basidia of Lepista to cotton blue and acetocarmine. Weakly carminophilic basidial granules are reported in some Lepista-like fungi for the first time.
Agaricus svaveolens Fr. is considered a nomen dubium et confusum. One new species, Lepista albofragrans Harmaja, is described. The following five new sections are described: Lepista subg. Lepista sect. Gilva Harmaja, L. subg. Lepista sect. Nuda Harmaja, L. subg. Pseudolyophyllum sect. Fragrans Harmaja, L. subg. Pseudolyophyllum sect. Phyllophila Harmaja, and L. subg. Pseudolyophyllum sect. Metachroa Harmaja. The following two new infrageneric combinations are also made: Lepista subg. Pseudolyophyllum (Sing.) Harmaja, and L. subg. Lepista sect. Disciformes (Fr.) Harmaja.

Authors: Niemelä, Tuomo
Journal: Karstenia, Volume 18 (1978), Issue 2, pages 43-48.
Doi: https://doi.org/10.29203/ka.1978.136
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Abstract:  Antrodia plicata Niemelä n. sp. differs from the other species of Antrodia s. str. mainly in having larger and thicker, perennial fruit bodies, smaller pores, shorter spores, and pendent false pilei when old. In Fennoscandia, it has been found on Populus tremula in one Swedish and two Finnish localities; collected also from Poland on P. tremula. Material from Salix has been studied from Czechoslovakia and Spain. Cultural characters of A. plicata are described.
The identities of Trametes salicina Bresadola and T. salicina var. greschikii Bres. are discussed, and a new combination, Antrodia salicina (Bres.) Niemelä, is made. The delimitations and different interpretations of the genus Antrodia are reviewed. Preference is given to the strict generic concept comprising only the species causing brown rot, and excluding most of the completely resupinate taxa of the Poria group.

Authors: Korhonen, Kari
Journal: Karstenia, Volume 18 (1978), Issue 2, pages 31-42.
Doi: https://doi.org/10.29203/ka.1978.135
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Abstract:  The Armillariella mellea complex in Finland is divided on the basis of mating experiments into three completely intersterile biological species with different morphological and ecological characteristics. Their nomenclature is still unclear. They are intersterile with A. mellea (Vahl ex Fr.) Karst. sensu stricto and A. bulbosa (Barla) Romagn., collected in France. All these five species exhibit a heterothallic bifactorial mating system, and in four species a similar mechanism of somatic diploidization in compatible mating has been observed. The diploid pure cultures belonging to these species can be identified in mating tests with the aid of the Buller phenomenon. Two species are common in Finland. They are predominantly saprophytes and occur to some extent in the butt rot of Picea abies. The third species is a pathogen of Pinus sylvestris saplings and has been found only in the southern part of the country. Some information about the occurrence of these species outside Finland is presented. The naturally occurring clones of Armillariella species have been identified by using incompatibility factors as genetic markers and on the basis of demarcation line formation in confrontations between diploid pure cultures. The results obtained with these two methods are in good agreement. The usual diameter of Armillariella clones in Finland is 10-50 m. The largest clones found had a diameter of 120-150 m.

Authors: Harmaja, Harri
Journal: Karstenia, Volume 18 (1978), Issue 1, pages 29-30.
Doi: https://doi.org/10.29203/ka.1978.134
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Abstract:  The following new species are described (all the types are from Finland): Clitocybe gigas Harmaja, Clitocybe subsinopica Harmaja, Cystoderma lilacipes Harmaja, Melanoleuca brevispora Harmaja, and Pleurotus viscidus Harmaja. Clitocybe subdryadicola Harmaja (nomen novum) must replace C. serotina Lamoure (non Vel.). The following new combinations are made: Cystoderma jasonis (Cooke & Massee) Harmaja, Cystoderma terreii (Berk. & Broome) Harmaja, and Rhodocybe harperi (Murr.) Harmaja.

Authors: Harmaja, Harri
Journal: Karstenia, Volume 18 (1978), Issue 1, pages 27-28.
Doi: https://doi.org/10.29203/ka.1978.133
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Abstract:  A new species belonging to the family Boletaceae Chev. (Agaricales) is described: Suillus lapponicus Harmaja. It is fairly closely related to S. variegatus (Fr.) Kuntze, from which it differs mainly in the decurrent hymenophore, slightly wider pores, somewhat darker KOH reaction of the pileus surface and context, larger spores, slightly darker spore wall which becomes red-brown in KOH, and the presence of two kinds of pleurocystidia, both differing from those of S. variegatus. S. lapponicus is known from one locality in Finnish Lapland, from dry heath forest, apparently forming an ectotrophic mycorrhiza with Pinus sylvestris L. Carminophilic basidial granules and spore wall are reported in S. lapponicus.

Authors: Härkönen, Marja
Journal: Karstenia, Volume 18 (1978), Issue 1, pages 24-26.
Doi: https://doi.org/10.29203/ka.1978.132
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Abstract:  A new species of Myxomycetes, Physarum apiculosporum Härkönen, is described from Finland. It was first obtained on Hordeum seeds in moist chamber culture. It resembles Physarum ovisporum G. Lister in being grey, sessile, sporangiate or plasmodiocarpous and having oval spores. The spores differ from those of P. ovisporum in being more oval, bigger, darker, smooth and apiculate. It was possible to cultivate the species from spore to spore in a simple medium of boiled A vena seeds on filter paper in a Petri dish.

Authors: Härkönen, Marja
Journal: Karstenia, Volume 18 (1978), Issue 1, pages 23.
Doi: https://doi.org/10.29203/ka.1978.131
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Abstract:  Comatricha ellae Härkönen, nom. nov. is introduced for C. nannengae Härkönen 1977, non Lakhanpal & Mukerji 1977.