The Experts below are selected from a list of 846 Experts worldwide ranked by ideXlab platform
Else C Vellinga - One of the best experts on this subject based on the ideXlab platform.
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four new species in leucoagaricus Agaricaceae basidiomycota from asia
Mycologia, 2015Co-Authors: Zai-wei Ge, Zhu L Yang, Tayyaba Qasim, A. N. Khalid, Rizwana Nawaz, Else C VellingaAbstract:The genus Leucoagaricus has been well studied in Europe. However, species diversity of Leucoagaricus in Asia remains poorly known, especially in the mountains of southwestern China, a hot spot for biodiversity. Based on morphological characters and molecular data, four new species are described, La. asiaticus, La. subcrystallifer, La. subpurpureolilacinus and La. truncatus. Detailed morphological descriptions, drawings of microstructures for novel taxa and comparisons with closely allied taxa are provided. Phylogenetic analyses inferred from internal transcribed spacer (ITS) and region 6-7 of the gene for the second largest subunit of RNA polymerase II (rpb2) sequences show that the novel taxa are nested within a well-supported clade jointly formed by members of Leucoagaricus section Rubrotincti and subgenus Sericeomyces.
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Lepiota albogranulosa sp.nov. (Agaricales, Agaricaceae) from Lahore, Pakistan
Mycological Progress, 2015Co-Authors: Tayyaba Qasim, Else C Vellinga, A. N. Khalid, Abdul RazaqAbstract:Lepiota albogranulosa sp. nov. is described as new species from Lahore, Pakistan, using morphological and molecular (nrITS) characters. Its striking features are: white to off-white basidiocarps, broadly ellipsoid spores, and a pileus covering, which is a hymeniderm with chains of cylindrical to clavate cells and globose to subglobose epithelial cells; it forms with L. scaberula , and L. cystophoroides / Cystolepiota cystophora a separate clade within sect. Cristatae .
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description and affinities of a sequestrate lepiota Agaricaceae from australia
Mycological Progress, 2013Co-Authors: Teresa Lebel, Else C VellingaAbstract:The novel Australian sequestrate species Lepiota geogenia is described and illustrated. It is characterized by globose to subglobose sporocarps that stain pale yellow with handling, and fusiform, asymmetric spores. Lepiota geogenia is a member of sect. Lepiota, to which the sequestrate western American Cryptolepiota spp, Lepiota viridigleba, and the European slightly secotioid L. sardoa also belong. We place the Cryptolepiota species within Lepiota, and provide two new names and one new combination.
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the family Agaricaceae phylogenies and two new white spored genera
Mycologia, 2011Co-Authors: Else C Vellinga, Phongeun Sysouphanthong, Kevin D HydeAbstract:A well resolved phylogeny of the Agaricaceae based on partial rpb2 sequences is presented from a wide geographic and systematic sampling of the family and compared to phylogenies based on nrLSU and tef1 sequences. A smaller dataset of the family focusing on the Agaricus clade of nrITS sequences and a combined dataset were used to determine the position of several white-spored taxa from northern Thailand. Two new genera are described from Thailand. Coniolepiota accommodates Lepiota spongodes, a gray-lilac-purple floccose white-spored species with a wide distribution in tropical Asia; Eriocybe has a white wooly felt-like covering of pileus and stipe, white spores and is described with one new species E. chionea, so far known only from northern Thailand. These new genera are closely related to three genera with colored spores (viz. Agaricus, Heinemannomyces and Clarkeinda) and not to other white-spored taxa.
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the genus macrolepiota Agaricaceae basidiomycota in china
Fungal Diversity, 2010Co-Authors: Zai-wei Ge, Zhu L Yang, Else C VellingaAbstract:Species of the genus Macrolepiota (Agaricaceae) in China were investigated on the basis of morphology and DNA sequences data. Six species, i.e., M. detersa, M. dolichaula, M. mastoidea, M. orientiexcoriata, M. procera, and M. velosa are recognized, of which M. detersa and M. orientiexcoriata are new species. All of them are described and illustrated with line drawings, and a key is provided to those recognized species. The taxonomic uncertainty of M. crustosa, originally described from China, is also discussed. ITS sequences were used to support the new species delimitations and to test the conspecificity between the Chinese specimens and their relatives from other continents. Phylogenetic analyses identify three clades within Macrolepiota: /macrolepiota, /macrosporae, and /volvatae clade. /macrolepiota clade and /macrosporae clade respectively correspond to section Macrolepiota and section Macrosporae in Bon’s infrageneric classification. Section Volvatae is proposed to accommodate species with a volva but without clamp connections within Macrolepiota.
Zai-wei Ge - One of the best experts on this subject based on the ideXlab platform.
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New species of Echinoderma and Lepiota (Agaricaceae) from China
Phytotaxa, 2020Co-Authors: Zai-wei GeAbstract:Three species of Lepiota sensu lato from China are described and illustrated based on morphological characters and molecular evidence. Echinoderma flavidoasperum and Lepiota omninoflava are new to science, while Lepiota echinacea is newly reported from China. Echinoderma flavidoasperum is characterized by a yellow pileus, nearly smooth stipe that discolors light red when bruised, and subcylindrical basidiospores. Lepiota omninoflava, so far only found in the tropics, is characterized by the yellow basidiomata, ellipsoid basidiospores and the absence of cheilocystidia. All three of the Chinese species are discussed and placed within a phylogeny based on the internal transcribed spacer (ITS) region, the large subunit (LSU) of the ribosomal DNA, the translation elongation factor 1-α (tef1-α) and the second largest subunit of RNA polymerase II (rpb2).
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Pseudolepiota zangmui gen. et sp nov. (Agaricaceae, Basidiomycota), a new white-spored mushroom from China
Phytotaxa, 2017Co-Authors: Zai-wei Ge, Zhu-liang YangAbstract:Pseudolepiota zangmui , collected from mixed subtropical Fagaceae forests of Southwestern China, is described, illustrated and discussed as new based on unique morphological characters and molecular data. Pseudolepiota is distinctive in having white lamellae, a stipe covered with easily detached band-like floccose squamules, a pileipellis that is a subcutis layer made up of slightly interwoven cylindrical hyphae, dextrinoid basidiospores without a germ pore and hyphae without clamp connections. The combined morphotaxonomy and Maximum Likelihood tree inferred from rpb 2 and ITS sequences confirmed that Pseudolepiota is a member of Agaricaceae and is evolutionarily distinct from all other described genera and species within this family.
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four new species in leucoagaricus Agaricaceae basidiomycota from asia
Mycologia, 2015Co-Authors: Zai-wei Ge, Zhu L Yang, Tayyaba Qasim, A. N. Khalid, Rizwana Nawaz, Else C VellingaAbstract:The genus Leucoagaricus has been well studied in Europe. However, species diversity of Leucoagaricus in Asia remains poorly known, especially in the mountains of southwestern China, a hot spot for biodiversity. Based on morphological characters and molecular data, four new species are described, La. asiaticus, La. subcrystallifer, La. subpurpureolilacinus and La. truncatus. Detailed morphological descriptions, drawings of microstructures for novel taxa and comparisons with closely allied taxa are provided. Phylogenetic analyses inferred from internal transcribed spacer (ITS) and region 6-7 of the gene for the second largest subunit of RNA polymerase II (rpb2) sequences show that the novel taxa are nested within a well-supported clade jointly formed by members of Leucoagaricus section Rubrotincti and subgenus Sericeomyces.
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the genus macrolepiota Agaricaceae basidiomycota in china
Fungal Diversity, 2010Co-Authors: Zai-wei Ge, Zhu L Yang, Else C VellingaAbstract:Species of the genus Macrolepiota (Agaricaceae) in China were investigated on the basis of morphology and DNA sequences data. Six species, i.e., M. detersa, M. dolichaula, M. mastoidea, M. orientiexcoriata, M. procera, and M. velosa are recognized, of which M. detersa and M. orientiexcoriata are new species. All of them are described and illustrated with line drawings, and a key is provided to those recognized species. The taxonomic uncertainty of M. crustosa, originally described from China, is also discussed. ITS sequences were used to support the new species delimitations and to test the conspecificity between the Chinese specimens and their relatives from other continents. Phylogenetic analyses identify three clades within Macrolepiota: /macrolepiota, /macrosporae, and /volvatae clade. /macrolepiota clade and /macrosporae clade respectively correspond to section Macrolepiota and section Macrosporae in Bon’s infrageneric classification. Section Volvatae is proposed to accommodate species with a volva but without clamp connections within Macrolepiota.
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the genus macrolepiota Agaricaceae basidiomycota in china escholarship
2010Co-Authors: Zai-wei Ge, Zhu L Yang, Else C VellingaAbstract:Species of the genus Macrolepiota (Agaricaceae) in China were investigated on the basis of morphology and DNA sequences data. Six species, i.e., M. detersa, M. dolichaula, M. mastoidea, M. orientiexcoriata, M. procera, and M. velosa are recognized, of which M. detersa and M. orientiexcoriata are new species. All of them are described and illustrated with line drawings, and a key is provided to those recognized species. The taxonomic uncertainty of M. crustosa, originally described from China, is also discussed. ITS sequences were used to support the new species delimitations and to test the conspecificity between the Chinese specimens and their relatives from other continents. Phylogenetic analyses identify three clades within Macrolepiota: /macrolepiota, /macrosporae, and /volvatae clade. /macrolepiota clade and /macrosporae clade respectively correspond to section Macrolepiota and section Macrosporae in Bon’s infrageneric classification. Section Volvatae is proposed to accommodate species with a volva but without clamp connections within Macrolepiota.
Alfredo Vizzini - One of the best experts on this subject based on the ideXlab platform.
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Looking for Lepiota psalion Huijser & Vellinga (Agaricales, Agaricaceae)
MycoKeys, 2019Co-Authors: Alfredo Vizzini, Alessia Tatti, Henk A Huijser, Jun F Liang, Enrico ErcoleAbstract:: Lepiotapsalion is fully described based on a recent collection from Sardinia (Italy) and the holotype. NrITS- and nrLSU-based phylogeny demonstrates that sequences deposited in GenBank as "L.psalion" and generated from two Dutch and one Chinese collections are not conspecific with the holotype and represent two distinct, undescribed species. These species are here proposed as Lepiotarecondita sp. nov. and Lepiotasinorecondita ad int.
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looking for lepiota psalion huijser vellinga agaricales Agaricaceae
MycoKeys, 2019Co-Authors: Alfredo Vizzini, Alessia Tatti, Henk A Huijser, Jun F Liang, Enrico ErcoleAbstract:: Lepiotapsalion is fully described based on a recent collection from Sardinia (Italy) and the holotype. NrITS- and nrLSU-based phylogeny demonstrates that sequences deposited in GenBank as "L.psalion" and generated from two Dutch and one Chinese collections are not conspecific with the holotype and represent two distinct, undescribed species. These species are here proposed as Lepiotarecondita sp. nov. and Lepiotasinorecondita ad int.
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leucoagaricus viridariorum Agaricaceae agaricales a new species from spain
Phytotaxa, 2015Co-Authors: Guillermo Munoz, Agustin Caballero, Joan Carles Salom, Enrico Ercole, Alfredo VizziniAbstract:Leucoagaricus viridariorum is proposed as a new species based on material collected in different areas of Spain. This taxon is characterised macroscopically by its small, whitish basidiomes, minutely squamulose-fibrillose pileus, evanescent ascendant annulus and growth in man-made environments. Microscopically, its subglobose to broadly ellipsoid spores, the clavate cheilocystidia and the trichodermic pileipellis are diagnostic. Based on molecular data of the internal transcribed spacer of nuclear ribosomal DNA (nrITS) this species belongs to the Leucoagaricus/Leucocoprinus clade of the Agaricaceae where it is sister to Leucoagaricus amanitoides.
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leucoagaricus sabinae Agaricaceae a new species from the dominican republic
North American Fungi, 2015Co-Authors: Alfredo Justo, Claudio Angelini, Alberto Bizzi, Alfredo VizziniAbstract:Leucoagaricus sabinae is proposed as a new species based on material collected in the Dominican Republic. This taxon is characterized macroscopically by the relatively small size, the dull gray-pink pileus, yellow gills immediately turning pink when touched and the ever-present white velar residues on the margin of the pileus. Microscopically the vaguely metachromatic to non-metachromatic spores, the scarce, cylindrical-flexuous cheilocystidia and the piles covering elements with parietal pigment are diagnostic. Based on molecular data (nrLSU, nrITS) this species belongs in the Leucoagaricus/Leucocoprinus clade of the Agaricaceae.
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lepiota elseae agaricales Agaricaceae a new species of section lepiota from spain
Phytotaxa, 2015Co-Authors: Agustin Caballero, Guillermo Munoz, Alfredo Vizzini, Marco Contu, Enrico ErcoleAbstract:A new species, Lepiota elseae , is described from Mediterranean areas in Spain in association with Quercus ilex, based on both morphological and molecular characters (analysis of the ITS-rDNA sequences). Illustrations of fresh basidiomata in situ and of the main macro- and micromorphological features are provided. L. elseae belongs to section Lepiota and is compared with morphologically similar taxa. The phylogenetic relationship with related species based on ITS sequences is discussed.
Kevin D Hyde - One of the best experts on this subject based on the ideXlab platform.
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Xanthagaricus siamensis sp. nov. (Agaricaceae), a new species with dull green lamellae from northern Thailand
Phytotaxa, 2020Co-Authors: Phongeun Sysouphanthong, Kevin D Hyde, Saisamorn LumyongAbstract:Xanthagaricus siamensis, a new species in the family Agaricaceae, was discovered in northern Thailand and is here introduced based on its morphological features and molecular data. It is characterized by small to medium-sized basidiomata, a convex to plano-convex with depressed center pileus when mature, the presence of greyish orange to violet-brown fibrillose squamules on the pileus, lamellae that start out white, change to pinkish white when damaged, then change to dull green with age. Additionally, the annulus is fugacious, and the pileipellis is recognized as a cutis which morphologically distinguishes it from all other known Xanthagaricus. Phylogenetic analysis of the internal transcribed spacer region (ITS) and the large subunit of the nuclear ribosomal DNA (nrLSU) sequence data indicated that the three specimens of X. siamensis form a distinct lineage within Xanthagaricus, and they formed a well-supported clade representing the genus Xanthagaricus. Detailed illustrations of macro- and micro-morphological characteristics and descriptions are provided, as well as other relevant molecular evidence.
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lepiota thailandica Agaricaceae a new species from thailand
Phytotaxa, 2016Co-Authors: Phongeun Sysouphanthong, Kevin D Hyde, Jianchu Xu, Peter E MortimerAbstract:Lepiota thailandica , widely distributed across northern Thailand, is described as a new species and is recognizable by its tiny basidiomata, convex or umbonate pileus, covered with reddish brown squamules on a white fibrillose background, free lamellae, white cylindrical stipe sometimes with brown squamules at the basal zone, hyaline and ellipsoid to oblong ovoid basidiospores, clavate to utriform cheilocystidia, trichodermal structure of squamules on the pileus and stipe, and clamp-connections in all tissues. Morphological characters and nrITS sequence data indicate that the species belongs in the section Ovisporae , subsection Felininae , which contains species with a trichodermal pileus covering made up of long and short elements.
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edible species of agaricus Agaricaceae from xinjiang province western china
Phytotaxa, 2015Co-Authors: Zhuoren Wang, Luis A. Parra, Junliang Zhou, Kevin D Hyde, Philippe Callac, Wenjin Fu, Ruilin ZhaoAbstract:Agaricus is a genus of macrofungi containing species with high edible and medicinal values. A survey of Agaricus species carried out around the Ebinur Lake, in Xinjiang Province of China, in 2012, yielded 19 collections that exhibited a red discolouration when bruised. Morphological and phylogenetic comparison with species of five sections of Agaricus possessing the red discolouration trait showed that the specimens belonged to four species. Two species, A. sinodeliciosus sp. nov. and A. bitorquis in section Bivelares and A. desjardinii sp. nov. and A. padanus in section Nigrobrunnescentes , both sections being monophyletic. The two new species proposed are described and illustrated and all species are compared with similar taxa or previous records. Agaricus padanus is reported outside Italy for the first time. All species are edible and consumed by locals, and appear to be adapted to relatively dry, cold and sandy habitats. Like A. bitorquis , A. sinodeliciosus produces large, delicious semihypogeous basidiomata in such conditions; it is therefore a good potential candidate for domestication and industrial production.
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the family Agaricaceae phylogenies and two new white spored genera
Mycologia, 2011Co-Authors: Else C Vellinga, Phongeun Sysouphanthong, Kevin D HydeAbstract:A well resolved phylogeny of the Agaricaceae based on partial rpb2 sequences is presented from a wide geographic and systematic sampling of the family and compared to phylogenies based on nrLSU and tef1 sequences. A smaller dataset of the family focusing on the Agaricus clade of nrITS sequences and a combined dataset were used to determine the position of several white-spored taxa from northern Thailand. Two new genera are described from Thailand. Coniolepiota accommodates Lepiota spongodes, a gray-lilac-purple floccose white-spored species with a wide distribution in tropical Asia; Eriocybe has a white wooly felt-like covering of pileus and stipe, white spores and is described with one new species E. chionea, so far known only from northern Thailand. These new genera are closely related to three genera with colored spores (viz. Agaricus, Heinemannomyces and Clarkeinda) and not to other white-spored taxa.
Enrico Ercole - One of the best experts on this subject based on the ideXlab platform.
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Looking for Lepiota psalion Huijser & Vellinga (Agaricales, Agaricaceae)
MycoKeys, 2019Co-Authors: Alfredo Vizzini, Alessia Tatti, Henk A Huijser, Jun F Liang, Enrico ErcoleAbstract:: Lepiotapsalion is fully described based on a recent collection from Sardinia (Italy) and the holotype. NrITS- and nrLSU-based phylogeny demonstrates that sequences deposited in GenBank as "L.psalion" and generated from two Dutch and one Chinese collections are not conspecific with the holotype and represent two distinct, undescribed species. These species are here proposed as Lepiotarecondita sp. nov. and Lepiotasinorecondita ad int.
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looking for lepiota psalion huijser vellinga agaricales Agaricaceae
MycoKeys, 2019Co-Authors: Alfredo Vizzini, Alessia Tatti, Henk A Huijser, Jun F Liang, Enrico ErcoleAbstract:: Lepiotapsalion is fully described based on a recent collection from Sardinia (Italy) and the holotype. NrITS- and nrLSU-based phylogeny demonstrates that sequences deposited in GenBank as "L.psalion" and generated from two Dutch and one Chinese collections are not conspecific with the holotype and represent two distinct, undescribed species. These species are here proposed as Lepiotarecondita sp. nov. and Lepiotasinorecondita ad int.
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leucoagaricus viridariorum Agaricaceae agaricales a new species from spain
Phytotaxa, 2015Co-Authors: Guillermo Munoz, Agustin Caballero, Joan Carles Salom, Enrico Ercole, Alfredo VizziniAbstract:Leucoagaricus viridariorum is proposed as a new species based on material collected in different areas of Spain. This taxon is characterised macroscopically by its small, whitish basidiomes, minutely squamulose-fibrillose pileus, evanescent ascendant annulus and growth in man-made environments. Microscopically, its subglobose to broadly ellipsoid spores, the clavate cheilocystidia and the trichodermic pileipellis are diagnostic. Based on molecular data of the internal transcribed spacer of nuclear ribosomal DNA (nrITS) this species belongs to the Leucoagaricus/Leucocoprinus clade of the Agaricaceae where it is sister to Leucoagaricus amanitoides.
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lepiota elseae agaricales Agaricaceae a new species of section lepiota from spain
Phytotaxa, 2015Co-Authors: Agustin Caballero, Guillermo Munoz, Alfredo Vizzini, Marco Contu, Enrico ErcoleAbstract:A new species, Lepiota elseae , is described from Mediterranean areas in Spain in association with Quercus ilex, based on both morphological and molecular characters (analysis of the ITS-rDNA sequences). Illustrations of fresh basidiomata in situ and of the main macro- and micromorphological features are provided. L. elseae belongs to section Lepiota and is compared with morphologically similar taxa. The phylogenetic relationship with related species based on ITS sequences is discussed.
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leucoagaricus croceobasis agaricales Agaricaceae a new species of section piloselli from spain
Mycological Progress, 2014Co-Authors: Guillermo Munoz, Agustin Caballero, Enrico Ercole, Marco Contu, Alfredo VizziniAbstract:The new species Leucoagaricus croceobasis is described from a public park in Zaragoza, Spain, based on both morphological and molecular (ITS) characters. Illustrations of fresh basidiomata in situ and of the main macro- and micromorphological features are added. Leucoagaricus croceobasis belongs to section Piloselli and is compared with similar taxa.
