Category Archives: Volume 36 1996

Tanzanian Myxomycetes: second survey

Authors: Ukkola, Tarja & Härkönen, Marja & Saarimäki, Tiina
Journal: Karstenia, Volume 36 (1996), Issue 2, pages 51-77.
Full text: PDF
Key words: Africa, Myxomycetes, Tanzania

Abstract:  This work compiles the results obtained by moist chamber cultures of bark material collected in 1988-1989 and field collections made in 1990 and 1991. The collections represent 59 species, 30 of which are new to Tanzania, including Licea tanzanica Ukkola, Hark. & Gilert which is new to science. The following five are new to Africa: Ceratiomyxa sphaerosperma Boedijn, Cribraria minutissima Schw., Leptoderma iridescens G. Lister, Licea bulbosa Nann.-Brem. & Y.Yamam. and Physarum perfectum M.E. Peck. Altogether 91 species of Myxomycetes are now reported from Tanzania, the majority of them collected in montane forest belt. Decayed wood, litter, bark of living trees and living herbaceous plants served as substrata. The members of the orders Stemonitales and Physarales were most undemanding in their selection of substrata, and Physarales was the only order that prefered litter to other substratum.

A re-collection of Inonotus pruinosus Bondartsev (Basidiomycetes)

Authors: Dai, Yu-Cheng & Bondartseva, Margarita A. & Xu, Bao-You & Yu, Cheng-Zhi
Journal: Karstenia, Volume 36 (1996), Issue 2, pages 47-50.
Full text: PDF
Key words: China, Inonotus pruinosus, polypore

Abstract:  Inonotus pruinosus Bondartsev, earlier known from the type only, was re-collected from northeastern China. Its emended description is given and its taxonomic position is discussed. The fungus is characterized by its extensive pruinose basidiocarps, thick-walled and golden yellow spores and robust hyphoid setae and by living exclusively on Salix.

Revision of Physarum pezizoideum var. pezizoideum and var. microsporum (Myxomycetes)

Authors: Ukkola, Tarja & Härkönen, Marja
Journal: Karstenia, Volume 36 (1996), Issue 1, pages 41-46.
Full text: PDF
Key words: Africa, Badhamia, fungi, Myxomycetes, Tanzania

Abstract:  The taxonomic status of Physarum pezizoideum (Jungh.) Pavill. & Lagarde var. pezizoideum and var. microsporum M. L. Farr is re-examined. Checking of the type material of the species showed that var. microsporum is a synonym of var. pezizoideum, while var. pezizoideum sensu Farr belongs to a distinct, new species, described as Badhamia gigantospora Ukkola & Hark. (type from Tanzania).

The myxomycetes of boreal woodlands in Russian northern Karelia : a preliminary report

Authors: Schnittler, Martin & Novozhilov, Yuri
Journal: Karstenia, Volume 36 (1996), Issue 1, pages 19-40.
Full text: PDF
Key words: fungi, myxomycetes, North Karelia, species diversity

Abstract:  Data on species composition and ecology of myxomycetes are presented for an island of the Keret Archipelago (66°16’N, 34°40’E) in the White Sea (Karelia, Russia). The area, which lies in the middle boreal zone, contains all major vegetation types of Northern Karelia and was used as a model system for studying the myxomycetes of boreal woodlands. Ninety-two species of m xomycetes of 32 genera were regi stered with certainty, 12 of these new for Russia. Four species (Arcyria magna, Lamproderma gulielmae, Perichaena minor and Stemonitis nigrescens) are recorded for the first time for Fennoscandia. Microhabitat preferences and abundance estimations are presented for all species. The influence of microhabitat availability and microclimatic conditions on distribution are discussed. This study reports comparable data for myxomycete diversity in the Russian part of Fennoscandia. The mean species per genus ratio of 2.88 indicates a high taxonomic diversity of myxomycetes on the island. Comparisons with other wellstudied areas show highest coefficients of community with the boreal parts of Finland (0.62) and Sweden (0.55).

Macrofungi of oligotrophic Scots pine forests in northern Finland

Authors: Väre, Henry & Ohenoja, Esteri & Ohtonen, Rauni
Journal: Karstenia, Volume 36 (1996), Issue 1, pages 1-18.
Full text: PDF
Key words: Ascomycota, Basidiomycota, boreal pine forests, decomposer, macrofungi, mycorrhiza, saprophytic, yield

Abstract:  As part of the Lapland Forest Damage Project, permanent sampling plots in oligotrophic dry pine forests with sparse birch or spruce undergrowth were established in Finnish Lapland. One additional site was established in northern Norway. Sporocarps were collected from 14 plots in autumns 1991-1994. All together 207 fungus species were identified, 167 of them stipitate fungi and 40 corticioid or polyporoid species. Seventy-two fungus species were found at only one site, and 44 species at two or three sites. The remaining 91 species (47%), which were found at more than three sites, may be considered as common in the northern boreal pine forests of eastern Fennoscandia. Fifteen of these species were not especially associated with pine. Fifty-five per cent of all species were mycorrhizal, but as much as 70% of the common ones. In total, about 152 species were associated with pine. Ninety of these were mycorrhizal species, eight of them perhaps also mycorrhizal with birch or spruce; 44 were wood decomposers and 18 humicular species, decomposing mainly pine needles; 14 saprophytic species lived amongst mosses. The ectomycorrhizal genus Cortinarius was overwhelmingly most rich in species, with about 35 distinguished taxa. Of humicular saprophytic species 75% belonged to the family Tricholomataceae. The 58 wood decomposers mostly belonged to Corticiaceae and Polyporaceae. Only one basidiolichen, one coprophilous and one mycophilous species were found. The average annual yield of sporocarps was 4600 g dw ha-1. The variation from one year to the next was marked, with the most productive year being 1993 (9685 g dw ha-1) and the poorest 1994 (1115 g dw ha-1). Four species, Suillus variegatus, Lactarius rufus, Russula decolorans and R. paludosa, were responsible for 75% of the total yield in the best year. All of them are mycorrhizal and edible. The average annual yield of edible species was 3170 g dw ha-1, nearly 70% of the total yield. Four genera produced 85% of the yield, namely Cortinarius which accounted for 20%, Lactarius for 26%, Russula for 15% and Suillus for 27%. The proportion of mycorrhizal fungi was 98%.