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Introduction
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September 1980 - December 2012
September 1979 - August 1980
Education
August 1974 - June 1979
Publications
Publications (167)
Blastosporella zonata is one of the few basidiomycete fungi that produce asexual spores (conidia) on the mushroom. The role of these conidia in the fungal lifecycle is not known. We tested whether conidia are being utilized in local dispersal by looking for signatures of clonality in 21 samples from three localities separated by about three kilomet...
Four new genera encompassing six new species are described in the Lyophyllaceae ( Agaricales ): the monotypic Australocybe from Australia; the monotypic Phaeotephrocybe from Belize; the monotypic Nigrocarnea from Laos containing the novel conidia-producing species N. radicata and Praearthromyces containing two Asian taxa, the conidia-producing P ....
The genus Morchella has gone through turbulent taxonomic treatments. Although significant progress in Morchella systematics has been achieved in the past decade, several problems remain unresolved and taxonomy in the genus is still in flux. In late 2019, a paper published in the open-access journal Scientific Reports raised serious concerns about t...
This is a point-by-point rebuttal of the paper entitled “High diversity of Morchella and a novel lineage of the esculenta clade from the north Qinling Mountains revealed by GCPSR-based study” by Phanpadith et al. (2019), published in the Open-Access journal Scientific Reports (2019, 9:19856). The present critique is published as supplementary to th...
The ancestor of termites relied on gut symbionts for degradation of plant material, an association that persists in all termite families.1,2 However, the single-lineage Macrotermitinae has additionally acquired a fungal symbiont that complements digestion of food outside the termite gut.3 Phylogenetic analysis has shown that fungi grown by these te...
The genus Claudopus (Entolomataceae) is characterised by its crepidotoid or pleurotoid basidiomata, a highly reduced and lateral or almost absent stipe, flesh-brown, salmon or pinkish-brown spore-print, and basidiospores that are distinctly angular in all views. Currently, ca. 20 species of Claudopus have been described worldwide. Some samples coll...
Based on morphological and phylogenetic investigations, four new species, Clitocella termitophila, Clitopilus velutinus, Rhodocybe dominicana, and Rhodocybe pseudoalutacea, one new variety, Rhodocybe luteocinnamomea var. fulva, and first reports of Clitopilus prunulus, Rhodocybe mellea, and Rhodocybe roseiavellanea are described and illustrated fro...
2020) Rhodocybe fusipes (Entolo-mataceae), a new species from Amazonian 'terra-firme' Forest of Brazil.-Sydowia 72: 163-170. Rhodocybe fusipes (Entolomataceae) is described as a new taxon belonging to sect. Rufrobrunnea. The specimens were found in the Amazon rain forest of Brazil, growing on soil, among litterfall. This new species is morphologica...
The generic or subgeneric delimitation by morphology of the Entolomataceae (Agaricales, Basidiomycota) is often based on the habit and external features of the basidiomata, the hyphal arrangement of the pileus surface and the shape of the basidiospores, which possess either bumps or undulate-pustules forming short ridges, or longitudinal ridges or...
Morphological and molecular phylogenetic studies of true morels (Morchella) in North America, the Dominican Republic, Venezuela, Ecuador, and Peru led to the discovery of four undescribed species of Morchella. Two new species in the Elata clade, one from the Dominican Republic, initially distinguished by the informal designation Mel-18, and a newly...
Five species of Hydnum have been generally recognized from eastern North America based on morphological recognition: H.albidum , H.albomagnum , H.repandum and varieties, H.rufescens , and H.umbilicatum . Other unique North American species, such as H.caespitosum and H.washingtonianum , are either illegitimately named or considered synonymous with E...
Specimen data for sequences produced in this study
BI phylogeny of global species of Hydnum shown as a rectangular tree
The monotypic genus Phylloporopsis is described as new to science based on Phylloporus boletinoides. This species occurs widely in eastern North America and Central America. It is reported for the first time from a neotropical montane pine woodland in the Dominican Republic. The confirmation of this newly recognised monophyletic genus is supported...
Gyroporus (Gyroporaceae, Boletales) is a highly diverse genus of poroid ectomycorrhizal mushrooms with a nearly worldwide distribution. Previous attempts to unravel the diversity within this genus proved difficult due to the presence of semicryptic species and ambiguous results from analysis of ribosomal RNA markers. In this study, we employ a comb...
The Reserva Particular do Patrimônio do Natural Cristalino protects an evergreen forest in the southern Amazon Basin between the upper reaches of the Tapajós and Xingu rivers. The habitats include tall upland Amazonian terra firme forest, stands of native bamboo, seasonally-flooded varzea forest and cerrado vegetation. Photos by S. Sourell, except...
Nomenclatural type definitions are one of the most important concepts in biological nomenclature. Being physical objects that can be re-studied by other researchers, types permanently link taxonomy (an artificial agreement to classify biological diversity) with nomenclature (an artificial agreement to name biological diversity).
Two proposals to am...
A new Asian species of Crepidotus (Basidiomycota, Agaricales), C. asiaticus, is presented based on morphological and nuc rDNA internal transcribed spacer (ITS1-5.8S-ITS2 = ITS) and 28S sequence data. This new species, found in India and Thailand, is characterized by the centrally stipitate medium sized basidiomata, orange to reddish brown pileus, w...
A field guide for identifying mushrooms and other fleshy fungi in northeastern North America. 600 p.
Pleurocollybia cibaria is a wild edible mushroom sold in markets in Peru. The genus Pleurocollybia shares a phylogenetic alliance with the Tricholomatineae in the family Biannulariaceae (= Catathelasmataceae), however, no taxonomic investigations of P. cibaria have been performed since it was originally described over 50 years ago. Here we employ a...
Multiple collections of a new member of the Entolomataceae were found in W National Park of Niger during a survey of macrofungi. This new species with a dark reddish brown scaly pileus surface and a yellow stipe belongs in the genus Rhodophana of the Rhodocybe-Clitopilus clade in the Entolomataceae. Using a three-gene analysis of the phylogenetic p...
Two new quadrate spored species of Entoloma are described from Kerala, India based on morphological characters. Complete morphological descriptions along with photographs of habit and microstructures are provided. The new species are compared and discussed with morphologically similar species.
Two new quadrate spored species of Entoloma are described from Kerala, India based on morphological characters. Complete morphological descriptions along with photographs of habit and microstructures are provided. The new species are compared and discussed with morphologically similar species.
Rhodocybe tugrulii sp. nov. is described based on both morphological and molecular data (analysis of nrITS and nrLSU sequences) from Zigana Mountain, Trabzon, Turkey and Lääne County, Estonia. It is distinguished by the grey to beige or slightly reddish brown basidiomata, a small, convex to hemispheric, cracked pileus surface, decurrent lamellae; a...
Sequences from the internal transcribed spacer region of the ribosomes helped circumscribe two new Rhodocollybia species for neotropical America: R. olivaceogrisea from Costa Rica; and R. tenuipes from Dominican Republic and Puerto Rico. Both species are phylogenetically related to R. butyracea. Rhodocollybia maculata represents a new report for Do...
A new species, Phlebopus mexicanus, is described from southern tropical rainforests of Mexico based on morphological and molecular characters. Several features distinguish this species from others of Phlebopus including the medium to small basidiomata with olivaceous brown tomentose pileus that becomes finely areolate cracked with age, the dark yel...
Tetrapyrgos (Basidiomycota, Agaricales) is recognized as a genus characterized by basidiomes with a central or eccentric, well-developed stipe with a black to bluish black stipe base arising from a basal pad or disc; hyaline, inamyloid, distinctly tetrahedral basidiospores; non-gelatinous or weakly gelatinous pileipellis and pileus tramal tissues;...
An undescribed species of Laccaria was discovered in the Santuario del Bosque de Niebla of Xalapa, Mexico, in a montane cloud forest preserved under the protection of the Instituto de Ecología A.C. in Veracruz State. This new species is distinct based on basidiome morphology and supported by phylogenetic analyses of sequences of the internal transc...
Four species of the ectomycorrhizal (ECM) genus Sarcodon (Bankeraceae, Thelephorales, Basidiomycota) are described as new to science. Sarcodon pakaraimensis sp. nov. is described from forests dominated by the ECM trees Pakaraimaea dipterocarpacea (Dipterocarpaceae) and Dicymbe jenmanii (Fabaceae subfam. Caesalpinioideae) in the Pakaraima Mountains...
Eleven Nolanea species are described from Guyanese collections. The West African N. acuta comb. nov. is reported for the first time from the Neotropics, and N. alboproxima, N. applanata, N. clavata, N. claviformis, N. concentrica, N.
furcata, N. mimiae, N. rava, N. sinuolata, and N. subsulcata are new to science. All of these species occur in tropi...
Despite the recent molecular systematic analyses of the Entolomataceae (Agaricales, Basidiomycota), a robust classification of genera supported by morphological and phylogenetic evidence remains unresolved for this cosmopolitan family of pink-spored fungi. Here, a phylogenetic analysis for one of the two major clades (Rhodocybe-Clitopilus), was con...
Cercopemyces is described as a new genus based on collections of a newly discovered agaricoid species from the arid Cercocarpus forests of Utah and Colorado. The new genus is near Ripartitella and Cystodermella based on nLSU, rpb1 and ITS molecular sequences but distinctly different from these taxa. The ornamented basidiospores and inflated cells i...
Abstract Geoglossum simile is a distinctive species of the earth tongue class Geoglossomycetes, first described
in 1873. The taxonomic standing of this species has long been disputed, resulting in nearly 70 years of
potential misdiagnoses. Although G. simile was originally described from North America, it has subsequently
been reported from several...
Molecular phylogenies using 1-4 gene regions and information on ecology, morphology and pigment chemistry were used in a partial revision of the agaric family Hygro- phoraceae. The phylogenetically supported genera we recognize here in the Hygrophoraceae based on these and previous analyses are: Acantholichen, Ampulloclitocybe, Arrhenia, Cantharell...
Entocybe melleogrisea sp. nov. is described from a subboreal forest type in Québec, Canada. The stature of this species is robust and tricholomatoid and thus is very different from the mostly collybioid species placed in the genus. The distinctive basidiospore morphology, basidiospore histochemistry, and prolific, obvious clamp connections on all h...
Four new cuboid species of Entoloma (E. brunneopapillatum, E. brunneosquamulosum, E. griseolimosum, E. brunneocarnosum) are described, illustrated and discussed based on collections made from Kerala State, India by the authors. A key to the known cuboid species of Entoloma from Kerala State is also provided.
Three new species of Entoloma (E. suaveolens, E. crassum, and E. aurantioquadratum) are described, illustrated, and discussed based on collections made from Kerala State, India.
Five new species of Pouzarella are described from northern Argentina, P. brunneonigrescens, P. olivacea, P. parvispora, P. sulcata and P. variabilis. Pouzarella ferreri var. ferreri is also reported for the first time from Argentina. All known Pouzarella species reported from Argentina are discussed and a key to species is provided.
Se describen e...
of Entolomataceae, a highly diverse family of Agaricales with ca. 1100 described species (Kirk et al., 2008), has just begun to be studied in depth using molecular sequence data (Co-David et al., 2009; Baroni et al., 2011). The subjects of this paper are two unusual species in the family that have been described from eastern North America—one gaste...
Morphological and molecular characteristics support the recognition of a welldefined
taxonomic group within the Entolomataceae. The distinctive basidiospore form
and a three locus DNA analysis separate the species that share these characteristics from
other species of Entoloma s. l. We propose here a new genus, Entocybe, to
accommodate these taxa.
Daedalea neotropica, a species with striking violet stains on the pileus and pore surface, is
described from material collected in the Maya Mountains of Belize. A synopsis of Daedalea sensu stricto
is provided based on morphological and DNA sequence data. Analyses indicate that at least four species
should be included in Daedalea s.s.: D. dickinsii...
Clitopilus fuscogelatinosus sp. nov. is described in section Pleurotelloides Singer. The type was on rotting coniferous wood in coastal Newfoundland. Rhodocybe carlottae sp. nov., with a second colour variety, var. vinacea, is described in section Rhodophana (Kühner) Singer. Both varieties were found in coniferous forests on the Queen Charlotte Isl...
Abstract: A new genus and species of polypore, Aurantiopileus mayanensis, is described from Central America based on a visually striking collection made in the cloud forests of the Maya Mountains in Belize. Phylogenetic analysis using nLSU sequences and distinctive morphological characters support the erection of a new genus to accommodate this spe...
This paper is the fifth in a series documenting the Entolomataceae taxa (Agaricales, Basidiomycota) from Guyana. Three new species are described — Alboleptonia angustospora, A. cystidiosa, and A. minima — occurring in tropical rainforests of the Upper Potaro River Basin in Guyana's Pakaraima Mountains. Macromorphological, micromorphological, and ha...
This paper is the fourth in a series documenting the Entolomataceae taxa (Agaricales, Basidiomycota) from Guyana. Six new species in three genera are described-Calliderma caeruleosplendens, Paraeccilia unicolorata, Trichopilus tibiiformis, T. fasciculatus, T. vividus, and T. luteolamellatus-occurring primarily in mixed tropical rainforests of the P...
Rhodocybe pruinosostipitata, found on woody debris, and R. spongiosa, found on soil litter, are described as new species from tropical rainforests of the Pakaraima Mountains of Guyana. Both
species possess pustulate basidiospores and pseudocystidia. Rhodocybe pruinosostipitata is classified in section Rhodocybe based on its centrally attached stipe...
Rhodocybe pruinosostipitata, found on woody debris, and R. spongiosa, found on soil litter, are described as new species from tropical rainforests of the Pakaraima Mountains of Guyana. Both species possess pustulate basidiospores and pseudocystidia. Rhodocybe pruinosostipitata is classified in section Rhodocybe based on its centrally attached stipe...
Entoloma dragonosporum, a saprotrophic agaric, is reported for the first time from the Pakaraima Mountains of Guyana, occurring on soil in tropical rainforests. Based on its stellate spores, clamp connections, mycenoid habit, appressed fibrillose pileus, and pileipellis morphology, this Singerian species is transferred from Entoloma to Inocephalus....
GenBank, the public repository for nucleotide and protein sequences, is a critical resource for molecular biology, evolutionary biology, and ecology. While some attention has been drawn to sequence errors ([1][1]), common annotation errors also reduce the value of this database. In fact, for
Four new species of Pouzarella are described from the Dominican Republic and this report is
the first of this genus from Hispaniola. A new variety of one of these newly described species is also
described from Jamaica. Crinipellis (Pouzarella) squamifolia, previously described from Jamaica by
Murrill, is also discussed and illustrated. A new record...
This paper constitutes the first documented accounts of Entolomataceae taxa (Agaricales, Basidiomycota) from Guyana. Entoloma olivaceocoloratum, Entoloma rugosostriatum, Entoloma fragilum and Entoloma illinita are described as new species from the Pakaraima Mountains, occurring in rainforests dominated by ectomycorrhizal Dicymbe and Aldina spp. Mac...
A new species, Pleurocollybia imbricata, is described from the Maya Mountains of Belize and a new combination in Pleurocollybia is proposed. A key to the known species of Pleurocollybia is also provided.
This paper constitutes the first documented accounts of Entolomataceae taxa (Agaricales, Basidiomycota) from Guyana. Entoloma olivaceocoloratum, Entoloma rugosostriatum, Entoloma fragilum and Entoloma illinita are described as new species from the Pakaraima Mountains, occurring in rainforests dominated by ectomycorrhizal Dicymbe and Aldina spp. Mac...
This paper presents results of surveys of stipitate-pileate Boletales in Belize and the Dominican Republic. A key to the Boletales from Belize and the Dominican Republic is provided, followed by descriptions, drawings of the micro-structures and photographs of each identified species. Approximately 456 collections from Belize and 222 from the Domin...
Ovrebo, C.L and Baroni, T.J. (2007). New taxa of Tricholomataceae and Entolomataceae (Agaricales) from Central America. Fungal Diversity 27: 157-170. A new genus and species of lignicolous Tricholomataceae, Lepistella ocula, with affinities to Lepista, is described from Central America (Panama and Costa Rica). Two new species of Entolomataceae are...
Gymnopus setulosus, described from Jamaica, is now known from the
Caribbean, Central and tropical South America. Apparently, Lentinus pilosus Rick,
described from southern Brazil, is a synonym. The species belongs in Xerula sect.
Xerula, and a new combination is proposed to accommodate this placement. Xerula
hispida, described from Costa Rica, appe...
Two new genera encompassing three new species of lyophylloid agarics that produce conidia on the basidiomata are described. Arthromyces is a genus comprised of two very different arthrospore-producing mushroom species found in the Greater Antilles and Central America. Blastosporella is a monotypic genus with spherical balls of blastospores covering...
A phylogeny of the fungal phylum Basidiomycota is presented based on a survey of 160 taxa and five nuclear genes. Two genes, rpb2, and tef1, are presented in detail. The rpb2 gene is more variable than tef1 and recovers well-supported clades at shallow and deep taxonomic levels. The tef1 gene recovers some deep and ordinal-level relationships but w...
Bothia is described as a new genus in the Boletaceae based on Boletinus castanellus described by C.H. Peck from eastern North America. A widespread, occasionally encountered taxon, Bothia castanella possesses a combination of macro- and microscopic features that has prompted past placement in seven different genera. Yet, as a species it is readily...
Bothia is described as a new genus in the Boletaceae based on Boletinus castanellus described by C.H. Peck from eastern North America. A widespread, occasionally encountered taxon, Bothia castanella possesses a combination of macro- and microscopic features that has prompted past placement in seven different genera. Yet, as a species it is readily...
An overview of the phylogeny of the Agaricales is presented based on a multilocus analysis of a six-gene region supermatrix. Bayesian analyses of 5611 nucleotide characters of rpb1, rpb1-intron 2, rpb2 and 18S, 25S, and 5.8S ribosomal RNA genes recovered six major clades, which are recognized informally and labeled the Agaricoid, Tricholomatoid, Ma...
An overview of the phylogeny of the Agaricales is presented based on a multilocus analysis of a six-gene region supermatrix. Bayesian analyses of 5611 nucleotide characters of rpb1, rpb1-intron 2, rpb2 and 18S, 25S, and 5.8S ribosomal RNA genes recovered six major clades, which are recognized informally and labeled the Agaricoid, Tricholomatoid, Ma...
Five new and two previously unrecorded species of Rhodocybe (Agaricales, fungi) are described from
the Australian state of Tasmania with a key provided to species known from Australia and New Zealand. This is the first report of Rhodocybe taxa for Tasmania, and increases the known number of species of this genus for the Australia /New Zealand regio...
