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Search for "LACTARIUS|vellereus": 30 articles found in Index.

SCHAEFER Z. (1979): Beitrag zum Studium der Sektion Albates der Lactarien.  Česká Mykologie 33(1): 1-12   (published: 15th February, 1979)
  abstract   The natural group of Lactarius — section Albates — may be divided into two stirps: Piperatus and Vellereus. The author includes in stirps Piperatus, besides the known species Lactarius piperatus (L. ex Fr.) S. F. Gray and Lactarius glaucescens Crossl., a new species Lactarius eburneus sp. nov. instead of L. pergamenus Sw. ex Fr. Stirps Vellereus is subdivided into two groups according to the reaction of the context to KOH: Lactarius vellereus Fr. ex Fr. and Lactarius velutinus Bertillon. One strikingly different new species is added to each group: in the L. vellereus group Lactarius moravicus sp. nov. with green staining flesh, and in the L. velutinus group Lactarius hometii Gillet with pink staining flesh.

HERINK J. (1956): Makrochemické reakce mléka ryzců - Lactarius (D. C. ex) S. F. Gray.  Česká Mykologie 10(3): 148-159   (published: 3rd September, 1956)

HOLEC J., KŘÍŽ M., POUZAR Z., ŠANDOVÁ M. (2015): Boubínský prales virgin forest, a Central European refugium of boreal-montane and old-growth forest fungi.   [Mt. Boubín, Bohemian Forest, Czech Republic, Basidiomycota, Ascomycota, diversity, ecology, distribution]  Czech Mycology 67(2): 157-226   (published: 10th September, 2015)
  abstract   Boubínský prales virgin forest is the best-preserved montane Picea-Fagus-Abies forest in the Czech Republic. Its core area (46.67 ha), grown with original montane forest never cut nor managed by foresters, has been protected since 1858. It represents the centre of the present-day nature reserve (685.87 ha). A detailed inventory of its fungal diversity was carried out in 2013–2014. Ten segments differing in habitat and naturalness were studied (235 ha). The total number of species was 659, with the centre of diversity in the core area (503 species) followed by the neighbouring segments grown by natural forests minimally influenced by man. When literature and herbarium data are added, the total diversity reaches a total of 792 taxa. The locality represents a unique refugium for some borealmontane fungi (e.g. Amylocystis lapponica, Laurilia sulcata, Pholiota subochracea), a high number of rare species preferring old-growth forests (Antrodia crassa, A. sitchensis, Baeospora myriadophylla, Chrysomphalina chrysophylla, Fomitopsis rosea, Ionomidotis irregularis, Junghuhnia collabens, Skeletocutis odora, S. stellae, Tatraea dumbirensis), wood-inhabiting and mycorrhizal fungi confined to Abies (Panellus violaceofulvus, Phellinus pouzarii, Pseudoplectania melaena, Lactarius albocarneus), and a high number of indicators of well-preserved Fagus forests (e.g.Climacodon septentrionalis, Flammulaster limulatus, Pholiota squarrosoides). Several very rare fungi are present, e.g. Chromosera cyanophylla, Cystoderma subvinaceum and Pseudorhizina sphaerospora. The value of the local mycobiota is further emphasised by the high number of protected and Red List species. Comparison with other Central European old-growth forests has confirmed that Boubínský prales is a mycological hotspot of European importance.

CABOŇ M., ADAMČÍK S. (2014): Ecology and distribution of white milkcaps in Slovakia.   [Lactarius controversus, Lactifluus bertillonii, Lactifluus glaucescens, Lactifluus piperatus, Lactifluus vellereus, Slovakia, ecology, fungi, Russulaceae]  Czech Mycology 66(2): 171-192   (published: 23rd December, 2014)
  abstract   The study deals with the occurrence and ecology of five white milkcap species in Slovakia, Lactarius controversus, Lactifluus bertillonii, Lactifluus glaucescens, Lactifluus piperatus and Lactifluus vellereus. Recent molecular studies have shown that the reliability of field characters traditionally used for identification of white milkcaps is very low. Comparison of our field observations with microscopical analyses confirmed that the colour change of the latex is not a reliable feature to distinguish Lactifluus glaucescens and Lactifluus piperatus. An interesting result is the discovery that Lactifluus bertillonii was not recognised in the past (until 2013) and has been consistently misidentified as Lactifluus vellereus (8 herbarium specimens). Surprisingly, older specimens of Lactifluus glaucescens and Lactifluus piperatus, although well represented in the herbaria, were not frequently confused. Possible reasons are discussed.

ZOTTI M., PAUTASSO M. (2013): Macrofungi in Mediterranean Quercus ilex woodlands: relations to vegetation structure, ecological gradients and higher-taxon approach.   [conservation biology, ectomycorrhiza (ECM), fungal diversity, multivariate analysis]  Czech Mycology 65(2): 193-218   (published: 20th December, 2013)
  abstract   Few studies have investigated the relationships between mycodiversity and plant communities in Quercus ilex (holm oak) woodlands. These are unique ecosystems in the Mediterranean basin of high mycological importance. The macrofungi of Q. ilex forests in Liguria, North-Western Italy, were studied: 246 species were observed in 15 permanent plots over four years. Some species were identified as typical of holm oak woodlands, e.g. Hygrophorus russula, Leccinellum lepidum, and Lactarius atlanticus.Correspondence analysis (CA) showed that the main ecological gradients shaping the fungal and plant communities are driven by soil pH and climatic factors. The CA confirms that the minimum sampling area for macrofungi is larger than for plant communities and that aggregation of multiple plots is suitable for data analysis. The data suggest that the higher-taxon approach can be successfully applied also to Q. ilex macrofungi, not only for total species and genus richness, but also within abundance classes. Further investigations are required to better characterise the mycodiversity of Mediterranean holm oak woodlands in relation to human impacts over various scales to plan effective conservation strategies.

ADAMČÍK S., RIPKOVÁ S., ZALIBEROVÁ M. (2006): Diversity of Russulaceae in the Vihorlatské vrchy Mts. (Slovakia).   [Russula, Lactarius, distribution, biodiversity, Slovakia, fungi]  Czech Mycology 58(1-2): 43-66   (published: 10th August, 2006)
  abstract   Russulaceae taxa were studied in selected (nine) localities in the Vihorlatské vrchy Mts. (Slovakia) in the years 2001–2003. The study was focused on their diversity, ecology and distribution. A total of 75 species were identified, from which four species, Lactarius romagnesii, Russula odorata, R. sericatula and R. zvarae, were not published from Slovakia before, and another eleven species are rare.

VAŠUTOVÁ M. (2004): Macromycetes of permanent plots in cultural forests in the Moravskoslezské Beskydy Mts. and Vsetínské vrchy hills (Czech Republic).   [Czech Republic, macromycetes, cultural beech and spruce forests, mycocoenology, permanent plots, ecology]  Czech Mycology 56(3-4): 259-289   (published: 22nd December, 2004)
  abstract   The mycoflora of cultural (artificial and managed subnatural) forests (i.e. beech, spruce and mixed forests) was studied in 18 permanent plots in the Moravskoslezské Beskydy Mts. and the adjacent part of the Vsetínské vrchy hills (Czech Republic) during they ears 1998-2000. Al together, 314 species of macromycetes were recorded. The highest number of species was recorded in plots in a young spruce forest on a former meadow (72 species ) and a waterlogged spruce forest (67 species ). Mycorrhizal fungi were the dominant group in older spruce forests (44.2 %), waterlogged spruce forests (43.3 %) and alder forest (45.6 %). A high percentage of terrestrial saprophytes was found in the young forest on a former meadow (43 %). Generally, common species prevailed.The main factor which influenced the species composition of all trophic groups was the composition of the tree layer. These results are compared with results from similar plots in the Czech Republic and neighbouring countries.

LAGANÀ A., SALERNI E., BARLUZZI C., PERINI C., DE DOMINICIS V. (2000): Mycocoenological studies in Mediterranean forest ecosystems: calcicolous deciduous oak woods of central-southern Tuscany (Italy).   [mycocoenology, calcicolous deciduous oak woods, Mediterranean]  Czech Mycology 52(1): 1-16   (published: 21st January, 2000)
  abstract   The results of mycocoenological studies carried out in calcicolous deciduous oak woods of central-southern Tuscany are reported. Comparison with there sults of studies in other for est ecosystems of the same area revealed exclusive differential species of deciduous oak woods and clarified the knowledge on mycocoenoses of central-southern Tuscany. The obtained in formation on individual species is also useful for understanding the relatively unexplored field of the ecology of macrofungi.

STERNER O., ANKE H. (1995): Toxic terpenoids isolated from higher fungi.   [Terpenoids, toxicity, biological activity, higher fungi, Basidiomycotina]  Czech Mycology 48(1): 39-52   (published: 16th May, 1995)
  abstract   A large number of toxic terpenoids have been isolated from cultures and fruit bodies of higher fungi. The chemistry, biological activity and possible natural functions of some of them are discussed in this paper. Especially interesting in this respect are natural defensive compounds that possess for example antibiotic and antifeedant activities and are likely to be toxic. The sesquiterpenoids of the pungent Lactarius species (e.g. L. necator, L. piperatus, L. rufus and L. vellereus) constitute an interesting example of this. In the fruit bodies of these species within seconds after a physical injury, an apparently inactive precursor is converted enzymatically into a range of pungent sesquiterpenes with an unsaturated dialdehyde functionality possessing potent antimicrobial and cytotoxic activities. The injury brings the precursor, which is present as an emulsion in the latex of specialised hyphae of the fruit bodies, in contact with the enzyme systems that are kept apart in the intact fruit body. Fruit bodies of non-pungent and edible Lactarius species (e.g. L. deliciosus and L. flavidulus) contain precursors with completely different chemical structures that also are converted as a response to injury, although to products with less striking biological activities and with uncertain function.

HOLEC J. (1993): Ecology of macrofungi in the beech woods of the Šumava mountains and Šumava foothills.  Česká Mykologie 46(3-4): 163-202   (published: 25th August, 1993)
  abstract   The fungi of the order Agaricales s. l. and several families of ungilled fungi and gasteromycetes were studied in the beech woods of the southeastern part of the Sumava mountains and Sumava foothills (Czechoslovakia). Altogether, 230 species were recorded on 8 permanent plots (50 x 50 m) during the years 1988 - 1990. The terrestrial fungi were closely associated with a particular layer of the surface humus and substrate, and the lignicolous fungi were associated with wood in various stages of decay. The occurrence of mycorrhizal fungi was influenced above all by the mycorrhizal partner, altitude, and climate. The species composition, number of mycorrhizal and terrestrial species on the individual plots, and their share were determined by the humus type, microrelief, and the thickness of the detritus layer. The occurrence of lignicolous fungi was in close relation to the degree of naturalness of the wood, substrate diversity of the plot and the mesoclimate. The results are summarized in the mycosociological tables and compared by the use of cluster analysis and diagrams.

SVRČEK M., MORAVEC J. (1989): Galeoscypha gen. nov., a monotypic new genus of Pezizales based on Galeoscypha pileiformis.  Česká Mykologie 43(4): 210-214   (published: 17th November, 1989)
  abstract   A new genus of Operculate Discomycetes, Galeoscypha Svrček et J. Moravec gen. nov., is proposed for Galeoscypha pileiformis (Svr.) Svrček et J. Moravec comb. nov. The new genus is placed in Pyronemataceae Corda em. Korf. Line drawings of the macro- and microfeatures of G. pileiformis and SEM photomicrographs of ascospores accompany the paper. Morphological characters distinguishing it from Coprobia include stipitate apothecia with a pileiform shape, granular or biguttulate ascospores, strongly cyanophilic perisporium ornamentation, and presence of rusty-brown basal mycelial hyphae.

KOTLABA F. (1981): Excursio mycologorum Bohemicorum in Karlštejn anno 1980.  Česká Mykologie 35(2): 108-111   (published: 1981)
  abstract   A mycological excursion to Karlštejn in 1980 is reported. Due to dry weather, few fungi were found. A complete list of all observed species is published, including common ones, unlike previous reports that listed only rare taxa.

MICKA K., KLÁN J. (1980): Chemical spot tests of macromycetes with benzidine.  Česká Mykologie 34(2): 74-81   (published: 1980)
  abstract   Macrochemical colour reactions of benzidine were studied mainly with the species of genera Agaricus, Amanita, Lactarius, Russula, and Tricholoma. With the genus Lactarius, differences were found between the reactions of the milk and the context. Oxidation enzymes, which give a blue-green, blue, or black reaction, were detected in many species of the genera Agaricus, Lactarius, and Russula, whereas with Amanita and most species of Tricholoma they were absent. In the case of the genus Russula, only species with a burning taste give a yellow or ochre reaction. The reactions of benzidine are suitable as complementary characteristics for the determination of some mutually similar species.

SVRČEK M. (1978): New or less known Discomycetes. VII.  Česká Mykologie 32(1): 11-18   (published: 1978)
  abstract   Five new species of Discomycetes from Czechoslovakia and German Democratic Republic are described: Coprobia pileiformis, Coronellaria benkertii, Haglundia magnipilosa, Hymenoscyphus rhytidiadelphi and Hysterostegiella zelendarkensis. The new records of Haglundia perelegans and H. sarmentorum from Bohemia are discussed.

ŠMARDA F. (1969): Die Verbreitung der Lactarius -Arten in den Waldgesellschaften Süd- und Westmährens.  Česká Mykologie 23(3): 181-186   (published: 15th July, 1969)
  abstract   In this paper, the Lactarius species of some mapping units of southern and western Moravia are treated from a mycocoenological point of view. The study explores their relationships with various forest communities and their potential for indicating site conditions.

NEČÁSEK J. (1967): The production of sterile fruit bodies in Coprinus sterquilinus Fr.  Česká Mykologie 21(1): 17-23   (published: 1967)
  abstract   The production of sterile or partially sterile fruitbodies in Coprinus sterquilinus Fr. (strain V) was studied under laboratory conditions. It was found that 20% of fruitbodies were abnormal and most appeared in the first fruiting period. The sterility is likely caused by a nuclear gene with incomplete penetrance. The study also references past literature on sterile fruitbody formation in other agarics.

KOCKOVÁ-KRATOCHVÍLOVÁ A., ŠMARDA F., POKORNÁ M. (1965): Ein Beitrag zur Ökologie der hefeartigen Mikroorganismen. Die hefeartigen Mikroorganismen auf der oberfläche der höheren Pilze aus dem Böhmisch-Mährischen Höhenzug und aus dem Brünner Bergland in Mähren.  Česká Mykologie 19(2): 114-120   (published: 1965)
  abstract   The authors isolated yeast-like microorganisms from the surface of fruitbodies of higher fungi collected in the forests of the Bohemian-Moravian Highlands and the Brno Uplands in 1962. Among 119 isolated strains, 12 were identified as Aureobasidium pullulans. Of the remaining 107 strains, 48.59% belonged to Candida, 29.9% to Torulopsis, 18.69% to Rhodotorula, and 2.8% to sporogenic yeasts. These organisms exhibit features typical of primitive species.

SVRČEK M., KUBIČKA J. (1964): Fungi from the Žofínský Virgin Forest in the Novohradské mountains (Southern Bohemia).  Česká Mykologie 18(3): 157-179   (published: 14th July, 1964)
  abstract   The authors report on higher fungi of the Žofínský Virgin Forest near Nové Hrady in Southern Bohemia, the oldest forest reserve in Bohemia. Covering 97 ha at 740–830 m elevation, the forest contains mostly Fagus silvatica, Abies alba, and Picea excelsa. During two excursions, 227 species of higher fungi were collected: 131 Agaricales, 67 Aphyllophorales, 17 Discomycetes, 12 Pyrenomycetes, and 10 Myxomycetes. One new species, Collybia terginoides, and one new variety, Paxillus panuoides var. rubrosquamulosus, are described. Three species were reclassified. New species for Bohemia are marked with an asterisk.

ŠMARDA F. (1964): Beitrag zur mykozönologischen Charasteristik des pannonischen Gebietes in der Umgebung von Brno.  Česká Mykologie 18(1): 7-15   (published: 25th January, 1964)
  abstract   The formation and development of plant and fungal communities in the hills near Brno are primarily influenced by microclimatic conditions. The paper describes communities on Horka Hill with different combinations of phanerogams and higher fungi, shaped by exposure and vegetation structure. The study shows how distinct microclimates lead to specific combinations of fungal species, complementing phytocenological characterization of vegetation.

KOTLABA F., POUZAR Z. (1962): Agarics and Boleti (Agaricales) from the Dobročský Virgin Forest in Slovakia.  Česká Mykologie 16(3): 173-191   (published: 6th July, 1962)

SCHAEFER Z. (1960): Lactarii čechoslovaci rariores vel novi VII.  Česká Mykologie 14(4): 230-237   (published: 20th October, 1960)

SVRČEK M. (1960): Eine mykofloristische Skizze der Umgebung von Karlštejn (Karlstein) im Mittelböhmen.  Česká Mykologie 14(2): 67-86   (published: 20th April, 1960)

FASSATIOVÁ O. (1958): Parasitische Deuteromyceten auf höheren Pilzen.  Česká Mykologie 12(3): 151-157   (published: 20th July, 1958)

MICKA K., POUZAR Z., SVRČEK M. (1956): Barevné reakce vyšších hub s benzidinem.  Česká Mykologie 10(3): 184-188   (published: 3rd September, 1956)

SCHAEFER Z. (1956): Méně známé, vzácné a nové ryzce ČSR III.  Česká Mykologie 10(3): 168-172   (published: 3rd September, 1956)

POUZAR Z. (1954): Poznámky k některým našim druhům ryzců - Lactarius I.  Česká Mykologie 8(1): 40-45   (published: 18th February, 1954)

SCHAEFER Z. (1953): Barevné reakce mléka ryzců.  Česká Mykologie 7(3): 108-112   (published: 15th September, 1953)

PILÁT A. (1951): Penízovka páchnoucí - Collybia rancida Fr., naše málo známá jedlá houba.  Česká Mykologie 5(6-7): 117-120   (published: 15th August, 1951)

POUZAR Z. (1951): Lactarius glaucescens Crossl. - nový ryzec pro ČSR.  Česká Mykologie 5(6-7): 111-117   (published: 15th August, 1951)

KULT K. (1950): Zpracování druhů hub z naleziště Čelákovice.  Česká Mykologie 4(8-10): 145-152   (published: 15th November, 1950)

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