Boris Assyov

Boris Assyov
Bulgarian Academy of Sciences | BAS · Mycology Department

About

66
Publications
38,716
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683
Citations
Additional affiliations
August 2018 - September 2019
Bulgarian Academy of Sciences
Position
  • Professor (Associate)

Publications

Publications (66)
Article
Full-text available
This paper presents new records and noteworthy data on the following taxa in SE Europe and adjacent regions: diatom alga Cylindrotheca gracilis, fungi Laccaria macrocystidiata, liverworts Riccia canaliculata, Riccia cavernosa, and Riccia frostii, mosses Dicranum viride, monocots Arundo donax, Cephalanthera rubra, Epipactis palustris, and Sternbergi...
Article
Full-text available
Assyov, B.: Pholiota gallica (Fungi, Strophariaceae), first Balkan collection of a little-known dark-spored agaric.-Borziana 3: 027-032. 2022-ISSN: 2724-5020 online. The author reports the first Balkan collection of the scarcely featured in the mycological literature Pholiota gallica based on material collected in Bulgaria. Description of the macro...
Article
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...
Data
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...
Article
Hygrocybe calciphila, an uncommon species of the genus was found for the first time in Southeastern Europe in forests of Pinus heldreichii in Bulgaria. Description and illustrations of the finding are presented. The European distribution of the species is summarized and briefly discussed, with emphasis on the scarce previous findings in Southern Eu...
Article
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column editors, to whom contribution should be sent (botanicaserbica@bio.bg.ac.rs) ABSTRACT: This paper presents new records and noteworthy data on the following taxa in SE Europe and adjacent regions: saprotrophic fungi Psathyrella typhae, Stro-pharia halophila, mosses Bryum klingraeffii and Buxbaumia viridis, liverwort Scapania gymnostomophila, m...
Article
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This paper presents new records and noteworthy data on the following taxa in SE Europe and adjacent regions: cyanobacteria Anagnostidinema amphibium, mycorrhizal fungus Tricholoma frondosae, stonewort Chara connivens, mosses Dicranum polysetum and Ulota intermedia, and dicots Eclipta prostrata, Paeonia daurica subsp. daurica, Ruta graveolens and So...
Article
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Seven smut fungi belonging to the genus Microbotryum are reported for the first time from the following Balkan countries: M. heliospermatis, M. piperi, M. scabiosae, M. silenes-dioicae, and M. silenes-saxifragae from Bulgaria, M. reticulatum, M. silenes-saxifragae, and M. stygium from Greece, and M. silenes-saxifragae from Bosnia and Herzegovina an...
Article
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Three ascomycetes are reported from Bulgaria of genera previously not documented from this country, namely Chaetothiersia, Pseudopithyella and Strobiloscypha. The collection of Chaetothiersia cupressicola, found at the Bulgarian Black Sea coast is the first finding after the description of the species earlier in 2021 and the first one outside Spain...
Article
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The paper introduces the first records in Southeastern Europe of Hydnotrya michaelis, rare ascomycete, collected in artificial plantation with Macedonian pine (Pinus peuce) and compared with specimens found with other Pinaceae. The species was studied for the first time on living materials and description and illustrations of the Bulgarian specimen...
Article
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The authors present a contribution to Amanita alseides, so far known from its type specimens from France and Italy. A detailed description is included, based on molecularly supported collections from Bulgaria and Greece, expanding the knowledge on the morphological variability and the distribution of the species
Article
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This paper presents new records and noteworthy data on the following taxa in SE Europe and adjacent regions: parasitic fungus Antherospora hortensis, saprotrophic fungi Loweomyces fractipes and Pholiota henningsii, stonewort Chara canescens, mosses Grimmia caespiticia and Rhodobryum ontariense, fern Woodsia alpina, monocots Aegilops triuncialis, Ep...
Article
The paper presents the results of the first molecular phylogenetic assessment of ITS rDNA sequences of members of the family Boletaceae in Turkey. The still little-known species Neoboletus xanthopus and Rubroboletus demonensis are discussed based on Turkish records, which are second after their original description. Data suggest that N. xanthopus m...
Article
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The author presents his personal experience with Neoboletus xanthopus, recently recognized and still little-known species. Description is provided, based on studied specimens from Eastern Europe and additional iconography is included in hope to facilitate its recognition. Neoboletus xanthopus is apparently a taxon, common in the southern parts of t...
Presentation
The high profile family of Boletaceae accommodates some truly spectacular ectomycorrhizal fungi, including rare as well as commercially important species widely documented in the temperate latitudes of the northern hemisphere. However, the diversity, distribution, estimated abundance and ecological needs of boletoid fungi in Mediterranean ecosystem...
Article
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Hemileccinum depilatum ( Boletales, Basidiomycota) is currently known from Western and Central Europe, the Mediterranean, the Balkan Peninsula, and Asia (Azerbaijan and Turkey). The fungus is rare throughout its range and is included in the Red Lists in several European countries. In Ukraine, the species is known since 2006. Formerly, H. depilatum...
Article
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The data presented here was obtained during a decade-long macromycete inventory on the island of Cyprus and is supplementary to the research article “Present status and future of boletoid fungi (Boletaceae) on the island of Cyprus: cryptic and threatened diversity unravelled by ten-year study”. A new, rainfall-based sampling protocol for documentin...
Article
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Fungi historically placed in the iconic genera of Boletus, Leccinum and Xerocomus have been the subject of major taxonomic revisions in recent years. Yet, despite all advancements in systematics, boletoid fungi in insular ecosystems remain little explored and our knowledge of their diversity, distribution and abundance in Mediterranean ecoregions i...
Article
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The paper reports and discusses some interesting findings of two southern boletes-Exsudoporus permagnificus and Pulchroboletus roseoalbidus-in association with the non-native for Europe Quercus rubra (Northern Red Oak). Descriptions and illustrations of the studied collections are provided, along with molecular phylogenetic analysis of the ITS sequ...
Article
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Knowledge on the diversity of hypogeous sequestrate ascomycetes is still limited in the Balkan Peninsula. A new species of truffle, Tuberpulchrosporum , is described from Greece and Bulgaria. Specimens were collected from habitats dominated by various oak species (i.e. Quercusilex , Q.coccifera , Q.robur ) and other angiosperms. They are morphologi...
Article
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In this study, eight species of Chroogomphus are recognized from Europe: C. britannicus, C. aff. liformis 1, C. fulmineus, C. cf. helveticus, C. mediterraneus, C. cf. purpurascens, C. rutilus, and C. subfulmineus. Different candidates for the application of the name C. rutilus are evaluated and the best fit to the description is selected; lecto- an...
Article
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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...
Poster
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The aim of this study is to expand the knowledge on the diversity of pezizalean fungi in Bulgaria, contributing new and interesting records. Twenty five taxa of Pezizales were recorded for the first time from Bulgaria, namely Acervus epispartius, Ascobolus viridis, Gyromitra fastigiata, G. martinii, Helvella branzeziana, H. confusa, H. corium, H. c...
Article
The new species Hydnellum dianthifolium is described and illustrated from Pinus brutia forests in Cyprus and southern Italy. Evidence from ITS-based phylogenetic and morphological analyses, including scanning electron microscopy is provided, and the relevant literature is reviewed. The long-standing taxonomic problems associated with the closely af...
Article
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The paper discusses occurrence of Mattirolomyces terfezioides in Bulgaria, presenting the easternmost locality in Europe known so far. Description and illustrations of the first Bulgarian collections are included.
Article
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Résumé : les auteurs commentent l’histoire nomenclaturale et l’orthographe de Boletus le-galiae Pilát ex Pilát & Dermek.
Article
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In Mediterranean and in southeast Europe the activities of a significant part of the population are traditionally linked with agriculture, forestry and animal husbandry. However, many rural communities are experiencing serious difficulties associated with low income per person and poor employment prospects combined with increased demographic declin...
Article
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A new alien species - Euphorbia prostrata (Euphorbiaceae), is reported for the Bulgarian flora. The species was collected for the first time in Bulgaria in 1963 near the town of Sandanski but remained unrecognised from the similar species E. maculata and E. chamaesyce. So far E. prostrata has been recorded in the following floristic regions: Black...
Book
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Description and evaluation of the most significant wetlands in Bulgaria is given, threats, conservation actions done and necessary conservation actions are presented.
Book
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This National Action Plan for Conservation of Wetlands of High Significance in Bulgaria (2013–2022) was prepared according to the Terms of Reference approved with letter No 48-00-1503/26.11.2010 of the Minister of Environment and Water and in fulfilment of the national priorities in biodiversity protection. The territorial scope of the plan includ...
Article
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Th e paper presents the results from the taxonomic revision of Boletus section Appendiculati in Bulgaria. Descriptions are provided based on Bulgarian specimens for the 5 species of the section: Boletus appendiculatus, B. fechtneri, B. fuscoroseus, B. regius, and B. subappendiculatus. Th e priority of the name B. fuscoroseus against B. pseudoregius...
Article
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The noteworthy hypogeous fungus Stephensia bombycina is recorded for the first time for the mycota of Bulgaria and Greece. Description is provided, based upon the collected specimens, accompanied by illustrations of the macro-morphological and the microscopic features of the species.
Article
The paper contributes to knowledge of Bulgarian fungal diversity on glacial relict vascular plants. Eleven new country records of ascomycetes and anamorphic fungi are presented with descriptions, namely Asteromella silvarum, Cainiella johansonii, Gnomoniella vagans, Hendersonia culmicola, Leptosphaerulina dryadis, Melasmia mougeotii, Phaeosphaeria...
Article
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Th is work provides new information about fi ve interesting and uncommon hypogeous fungi from Greece – Balsamia vulgaris, Geopora clausa, Hydnocystis piligera, Sclerogaster compactus and Wakefi eldia macrospora. Descriptions of the fi ve species are included based upon Greek collections, accompanied by colour macro-and microphotographs, and molecul...
Article
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This paper summarizes the available data of Strobilomyces strobilaceus in Bulgaria. Review of the available previous records is made and numerous new findings are reported. Totally 30 localities of the species are currently known. An UTM-grid map is appended. The fungus appeared to be widespread, but not common and observations likely support its p...
Article
Amanita singeri, a rare agaric known in Europe from a few Mediterranean and Atlantic localities, is recorded for the first time for the mycota of the Balkan Peninsula and Bulgaria. The new finding is described and illustrated. It is suggested that A. singeri might occur in other neighbouring countries on the peninsula.
Article
Boletus bubalinus (= Xerocomus bubalinus), a rare and insufficiently known xerocomoid bolete, is recorded for the first time for the mycota of the Balkan Peninsula and Bulgaria. Description is provided based upon the Bulgarian specimens and the delimitation of B. bubalinus from the rest of the European chrysenteroid boletes is briefly discussed. In...
Article
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A comprehensive checklist of the species of larger basidiomycetes in Bulgaria does not exist. The checklist provided here is the first attempt to fill that gap. It provides a compilation of the available data on the larger basidiomycetes reported from, or known to occur in Bulgaria. An alphabetical list of accepted names of fungi, recognized as occ...
Article
Two species of Trochila occurring on leaves of relict plants (T. ilicina on Ilex spp. and T. laurocerasi on Laurocerasus officinalis) are reported for the first time from Bulgaria, while T. craterium is recorded from a number of new localities. The three species are described, illustrated, and their known distribution in the Balkans and neighbourin...
Data
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The evaluator(s) of each species is listed in the table with species evaluations. Abstract. The national threat status of 898 species of vascular plants from the Bulgarian flora has been evaluated using Version 3.1 of the IUCN Red List Categories and Criteria. The resulting Red List of the Bulgarian vascular plants (threat categories) comprises 801...
Article
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The national threat status of 898 species of vascular plants from the Bulgarian flora has been evaluated using Version 3.1 of the IUCN Red List Categories and Criteria. The resulting Red List of the Bulgarian vascular plants (threat categories) comprises 801 species (20.5 % of the total flora), of which one Extinct (EX), 12 Regionally Extinct (RE),...
Conference Paper
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New records and/or plant substrata of 16 saprophytic pyrenomycetous fungi of Botryosphaeriaceae (Bortyosphaeria visci), Gnomoniaceae (Apiognomonia veneta, Gnomonia betulina, G. comari, G. geranii, G. gnomon, G. leptostyla, G. setacea, Hypospilina pustula, Plagiostoma inclinatum), Phaeosphaeriaceae (Leptosphaeria doliolum, Nodulosphaeria dolioloides...
Article
Studies on saprotrophic foliicolous ascomycetous fungi found in Southwest Bulgaria were done. Microscopic examinations of these materials were carried out. Results from nineteen species (eighteen species of the Gnomoniaceae and one of the Valsaceae) of diaporthalean foliicolous fungi are hereby presented. Ten of the species represent the genus Gnom...
Article
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Th e fi rst offi cial Red List of fungi in Bulgaria is presented where the current IUCN Red List categories are put into practice. It includes 215 species of ascomycetes and basidiomycetes, as follows: 37 Critically Endangered (CR), 105 Endangered (EN), 40 Vulnerable (VU), 14 Near Th reatened (NT), and 19 Data Defi cient (DD).
Article
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The paper presents contemporary chorological information and critical remarks on the distribution of 34 na- tive and adventive Bulgarian vascular plants.
Article
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A new species for the Bulgarian flora, Vulpia fasciculata (Poaceae), is reported. The species was found in seven locations on the Southern Black Sea Coast. All locations are on coastal sands, which are a typical habitat for this species. The status of six populations is described and the origin of the species in the Bulgarian flora is discussed.
Article
Th is paper provides information about the distribution of 22 species of Boletales. New data are reported or confi rmations of previous older records are made.
Article
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Boletus subappendiculatus is recorded for the first time in Bulgaria. The species is described and illustrated on the basis of Bulgarian specimens. The differences with the similar B. appendiculatus are briefly discussed.
Article
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Th e paper provides a preliminary checklist of Boletales in Bulgaria. It includes 77 species belonging to 18 genera. For each recorded taxon the distribution throughout the country, references to literature sources as well as the collection in which herbarium specimens are kept are given.
Article
Introduction Th e present article is a contribution to the study of the spe-cies composition and distribution of the operculate disco-mycetes (Pezizales) in Bulgaria. Data on 16 species are given. Th ree of them are reported for the fi rst time from the country, viz. Otidea propinquata, Peziza depressa, and Pseudoplectania sphagnophila. New localit...

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Projects (3)
Project
A study of the structural and functional characteristics and perspectives for diverse use of endemic relict coniferous forest communities in Bulgaria is carried out in the frame of a project supported by the Bulgarian National Science Fund. Bosnian pine (Pinus heldreichii) and Macedonian pine (Pinus peuce) are Tertiary relicts with a particularly limited distribution in Europe. Aim of the study is securing of contemporary scientific base for evaluation and sustainable management of endemic relict coniferous communities in Bulgaria through application of integrative scientific approach. The following tasks are defined: (1) preparation of main forest and taxation characteristics of the stands, (2) study of the biological diversity in the aforementioned communities, based on model groups of fungi (mycorrhizal, saprotrophic, parasitic, and lichenized fungi), plants, and coleopteran insects, (3) assessment of health status of forest stands, (4) comparative analysis of the species composition, structure and forest health status of natural stands and plantations of Bosnian and Macedonian pines, and (5) evaluation of important ecosystem services from communities of Bosnian and Macedonian pines and possibilities for sustainable use. Acknowledgements. This study is supported by the Bulgarian National Science Fund (Grant no. KP-06-N36/13/17.12.2019).