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Search for "ZEHN��LEK P.": 4 articles found.
HOLEC J., KUNCA V., KŘÍŽ M., ZEHNÁLEK P. (2022): Cyphella digitalis (Fungi, Agaricales) – new data on ITS barcode, ecology and distribution in the Czech Republic and Slovakia. [Cyphellaceae, Abies alba, old-growth forests, substrate, phenology.] Czech Mycology 74(1): 77-92 (published: 22nd April, 2022) Electronic supplement
abstract
Records of Cyphella digitalis from the Czech Republic and Slovakia are summarised and discussed. ITS barcode of two collections was obtained to document their conspecificity with the only so far sequenced sample originating from the Alps. In the study area, C. digitalis is rare with ten localities known from the 20th century and nine recorded in the 21st century. They are situated in the Bohemian Forest and several mountain ranges of the Western and Eastern Carpathians. The elevation range of the records is 525–1200 m a.s.l. All records are from Abies alba, mostly branches attached to freshly fallen trunks and sticking out into the air. Basidiomata occur in Fagus-Abies or Fagus-Abies-Picea forests from September to March with a peak in September–November. Most stands represent old-growth forests under protection. Ecology and distribution are discussed in a broad European context. The much lower number of records in the Czech Republic and Slovakia compared to more western countries could have, among other things, also biogeographical reasons, i.e. decrease in occurrence with increasing continentality to the east.
HOLEC J., ZEHNÁLEK P. (2021): Remarks on taxonomy and ecology of Dentipratulum bialoviesense based on records from Boubínský prales virgin forest in the Czech Republic. [Fungi, Basidiomycota, Russulales, Auriscalpiaceae, ITS rDNA, natural forests.] Czech Mycology 73(2): 121-135 (published: 1st July, 2021)
abstract
Two recent records of the rare fungus Dentipratulum bialoviesense from Boubínský prales virgin forest in the Czech Republic were documented morphologically and molecularly. One collection from the type locality, Białowieża virgin forest in Poland, was used for morphological comparison.The Boubínský prales collections agree with the Białowieża collection in macro- and micromorphological characters and ecology, namely their growth on decaying wood of Picea abies in natural forest. Simultaneously, Boubínský prales collections clearly differ in their ITS rDNA region from the only published Dentipratulum sequence based on a collection from France, originally identified as D. bialoviesense but currently representing a paratype of the recently described species D. crystallinum. Consequently, the Boubínský prales sequences most likely represent the first sequence data of D. bialoviesense. Notes on the taxonomy and ecology of D. bialoviesense and D. crystallinum are added, suggesting that the identity of all collections should be verified molecularly in future, especially those from wood of broadleaved trees in France. Photographs of dried basidiomata and key micromorphological characters of D. bialoviesense from Boubínský prales and Białowieża are provided.
HOLEC J., ZEHNÁLEK P. (2020): Taxonomy of Hohenbuehelia auriscalpium, H. abietina, H. josserandii, and one record of H. tremula. [fungi, morphology, DNA study, ecology, distribution, Europe.] Czech Mycology 72(2): 199-220 (published: 8th October, 2020)
abstract
The taxonomy of Hohenbuehelia auriscalpium (Fungi, Basidiomycota, Pleurotaceae) and its putative synonym H. abietina is evaluated based on material from natural forests in the Czech Republic and Ukraine. The rare species H. josserandii is described in detail based on rich collections from Boubínský prales virgin forest in the Czech Republic. All specimens were studied both morphologically and molecularly (ITS and 28S nrDNA, EF1-α). The recently published conclusion that H. auriscalpium and H. abietina are conspecific was confirmed. The species grows on wood of deciduous trees as well as conifers. The thickness of the gelatinous pileus layer and the presence or absence of pileocystidia proved to be taxonomically irrelevant. One collection from the studied dataset significantly deviates by its DNA sequences and may represent a separate taxon close to H. auriscalpium. Another collection originally identified as H. auriscalpium turned out to be H. tremula. A higher range of some morphological characters was found in H. josserandii as compared with published data. The species prefers wood of Abies alba, namely branches of trees which fell 2–3 years ago.
KOTLABA F., ZEHNÁLEK P. (2018): Sixteen gasteromycetes collected in Cuba 50 years ago [new records, Geastrum spp., taxonomy, nomenclature, distribution] Czech Mycology 70(2): 185-209 (published: 14th December, 2018)
abstract
Sixteen species of gasteromycetes were identified in 50-year old collections from Cuba, including five species new to this island. The species Calvatia cyathiformis, Clathrus columnatus, Clathrus crispus, Cyathus limbatus, Diplocystis wrightii, Rhizopogon sp., Scleroderma tenerum and Tulostoma floridanum had already been reported from Cuba, whereas Disciseda hyalothrix and Lycogalopsis solmsii represent new records for this country. Six species belong to the genus Geastrum, of which G. pectinatum agg., G. schweinitzii agg. and G. velutinum agg. were already known from Cuba, but three species, G. corollinum, G. kotlabae and G. trichiferum, are new to the Cuban mycobiota. Each species is provided with a brief description followed by taxonomic notes, and distribution.
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