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Red List of Bulgarian Algae. II. Microalgae

Red List of Bulgarian Algae. II. Microalgae

Profile image of Maya StoynevaMaya Stoyneva

2016

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View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Research at Sofia University Early view, On-line since 31st March 2016 Г О Д И Ш Н И К НА СОФИЙСКИЯ УНИВЕРСИТЕТ „СВ. КЛИМЕНТ ОХРИДСКИ“ БИОЛОГИЧЕСКИ ФАКУЛТЕТ КНИГА 2 – БОТАНИКА Том 100, 2015 A N N U A I R E DE L’UNIVERSITE DE SOFIA “ST. KLIMENT OHRIDSKI” FACULTE DE BIOLOGIE LIVRE 2 – BOTANIQUE Tome 100, 2015 СОФИЯ · 2016 ИЗДАТЕЛСТВО НА СУ „СВ. КЛИМЕНТ ОХРИДСКИ“ PRESSES UNIVERSITAIRES “ST. KLIMENT OHRIDSKI” Editor-in-Chief Prof. Maya Stoyneva-Gärtner, PhD, DrSc Editorial Board Prof. Dimiter Ivanov, PhD, DrSc Prof. Iva Apostolova, PhD Prof. Mariana Lyubenova, PhD Prof. Veneta Kapchina-Toteva , PhD Assoc. Prof. Aneli Nedelcheva, PhD Assoc. Prof. Anna Ganeva, PhD Assoc. Prof. Dimitrina Koleva, PhD Assoc. Prof. Dolya Pavlova, PhD Assoc. Prof. Juliana Atanasova, PhD Assoc. Prof. Melania Gyosheva, PhD Assoc. Prof. Rosen Tsonev, PhD Assistant Editor Main Assist. Blagoy Uzunov, PhD © СОФИЙСКИ УНИВЕРСИТЕТ „СВ. КЛИМЕНТ ОХРИДСКИ“ БИОЛОГИЧЕСКИ ФАКУЛТЕТ 2016 ISSN 0204-9910 (Print) ISSN 2367-9190 (Online) Early view, On-line since 31st March 2016 ANNUAL OF SOFIA UNIVERSITY “ST. KLIMENT OHRIDSKI” FACULTY OF BIOLOGY BOOK 2 – BOTANY Volume 100, 2015 ANNUAIRE DE L’UNIVERSITE DE SOFIA “ST. KLIMENT OHRIDSKI” FACULTE DE BIOLOGIE LIVRE 2 – BOTANIQUE Tome 100, 2015 RED LIST OF BULGARIAN ALGAE. II. MICROALGAE. Maya P. Stoyneva-Gärtner1*, Tsvetelina Isheva2, Plamen Ivanov1, Blagoy Uzunov1 & Petya Dimitrova3 Department of Botany, Faculty of Biology, University of Sofia ‘St. Kliment Ohridski’, 8 Dragan Tsankov Blvd., 1164 Sofia, Bulgaria 2 Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, 2 Gagarin Str., 1113 Sofia, Bulgaria 3 Institute of Physiology and Genetics of Plants, Bulgarian Academy of Sciences, Akad. Georgi Bonchev Str., bl. 21, 1113 Sofia, Bulgaria 1 Abstract. The Red List presented in this paper is focused on Bulgarian non-marine microalgae which face a risk of extinction. The assignment to each IUCN Red List category is according to the seven specific criteria and their relative values in the new method for an evaluation of the threatened status of microalgae (STOYNEVAGÄRTNER ET AL., this volume). The list contains 756 taxa (613 species, 82 varieties and 61 forms) from 7 divisions, classified in six IUCN categories and shows that threatened microalgae represent 14% the total algal biodiversity of Bulgaria. Key words: algae, Bulgaria, Red List, threatened species In spite of having no legal definition, Red Lists are world-wide accepted valuable sozological tools for designating the threatened status of organisms, which face an extinction risk and for raising the public awareness for their conservation as well. However, algae, most probably due to their general belonging to the invisible with the naked eye microscopic world, have been rarely considered as threatened (e.g. KRAUSE 1984; RASSI & VÄISÄNEN 1987; GUTOWSKI & MOLLENHAUER 1996; KNAPPE ET AL. 1996; KUSEL-FETZMANN 1999; LANGE-BERTALOT & STEINDORF 1996; LENZENWEGER 1999; MOLLENHAUER & KRISTENSEN 1996; ENVIRONMENTAL AGENCY, JAPAN 2000; PALAMAR-MORDVINTSEVA & TSARENKO 2004; NÉMETH 2005; corresponding author: M. Stoyneva-Gärtner - Sofia University “St. Kliment Ohridski”, Faculty of Biology, Department of Botany, 8 Dragan Tsankov Blvd, BG-1164, Sofia, Bulgaria; magaertner@biofac.uni-sofia.bg * BLAŽENČIĆ ET AL. 2006; SIEMIŃSKA 2006) and only 92 taxa, mainly marine macroalgae, have been included in The IUCN Red List of Threatened Species,Version 2015-4. In Bulgaria, the first Red List of macroalgae, based on standard IUCN criteria and categories, was published as a first part of general Red List of Bulgarian algae (TEMNISKOVA ET AL. 2008). The paper title (Red List of Bulgarian Algae. I. Macroalgae) clearly indicates the wish to create a second part oriented towards country’s microscopic algae due to the recognition of their biodiversity and conservation importance. The task was extremely difficult because of the obstacles in applying the standard IUCN criteria to the microalgal taxa, using the recent knowledge on their distribution and taxonomy. Therefore the efforts of the author’s team were devoted firstly towards the development of a new method for an objective evaluation of the threatened status of the microalgae (STOYNEVA-GÄRTNER ET AL., this volume). The Red List of microalgae presented in this paper is based on this method and was compiled after critical reading of all the references on their distribution in nonmarine habitats of Bulgaria. The Red List provided below is organized in a table format in the following way: 1) algal taxa in main taxonomic groups (after TEMNISKOVA & STOYNEVA 2011a,b), enlisted in alphabetical order according to their recently accepted taxonomic name (mainly after GUIRY & GUIRY 2016); 2) assigned IUCN threat category based on 3) the relative value of each of the seven criteria (A-G) fixed by STOYNEVA-GÄRTNER ET AL. (this volume), which practically gives the exact formula for each algal taxon and 4) its total counts (T). As it is proposed in the method description, in further publications or reports such formula could be used separately for each taxon: e.g. Anabaena pirinica Petkoff [CR - A3 B3 C4 D4 E4 F4 G4]. In case of special insistence on the level of the importance of the species due to its total counts, the formula could be expressed as Anabaena pirinica Petkoff [CR - A3 B3 C4 D4 E4 F4 G4 T25], or could be used in its short versions (e.g. Anabaena pirinica Petkoff [CR - T25], or Anabaena pirinica Petkoff [CR]). According to the IUCN recommendations in the Guidelines for Application of IUCN Red List Criteria at Regional Levels (Versions 3.0, 2007 and 4.0., 2012) we avoided the general categories ‘Extinct’ and ‘Extinct in the Wild’. Taking into account the lack of recent investigations in some of the localities, we decided to avoid also the category ‘Regional Extinct’ even for species, which have not been confirmed for the territory of Bulgaria during the last five (or more) decades. The other categories (Critically Endangered, Endangered, Vulnerable, Low Risk /Near Threatened, Least Concern/ and Data Deficient) were designated according to the total counts for each species, obtained after applying the seven criteria and their relative values proposed in STOYNEVA-GÄRTNER ET AL. (this volume). Due to the restricted volume of the paper, the synonyms are provided only for a few taxa, described from Bulgaria and references concerning the distribution of the included algae are enlisted only in the end of the paper. A special note has to be made for some mesoalgae, which could be visible macroscopically, but could not be identified even on generic level without a light microscope (e.g. Oedogonium, Mougeotia, Zygnema). Their representatives are included in the present list with one exception – Spirogyra rhodopea Petkoff, which has been enlisted as a Data Deficient species in TEMNISKOVA ET AL. (2008). Since the recent algal biodiversity in Bulgaria is quite rich – ca. 5500 taxa (STOYNEVA 2014), a preliminary screening of the species was done by the author’s team in an effort to elucidate the most rarely reported algae in Bulgarian phycological literature since the first publications by ISTFANFFI (1890) and PETKOFF (1898a-c) till nowadays. Afterwards the chosen algae were evaluated according to the method of STOYNEVAGÄRTNER ET AL. (this volume). Therefore it is possible to expect that further checking could outline more threatened microalgae in the country. The proposed Red List of threatened Bulgarian non-marine microalgae contains 757 taxa (613 species, 83 varieties and 61 forms) from 7 divisions classified in six IUCN categories (Appendix 1, Table 1) and the number of the threatened taxa in these categories and main taxonomic groups is shown below in Table 2. Table 2. Distribution of threatened Bulgarian microalgae in taxonomic divisions and IUCN categories (CR – Critically endangered, EN – Endangered, VU – Vulnerable, NT – Near threatened, LC – Least concern and DD – Data deficient). Cyanopro IUCN - category karyota CR EN 4 sp., 2 f. 24 sp., 1 var. Eugleno Pyrrho -phyta -phyta 1 sp. - 8 sp., 4 var., Ochro phyta 10 sp., 2 var. Hapto- Chloro- Strepto- phyta phyta phyta Total 18 sp., 5 sp., 38 sp., 1 var., 18 var., 21 var., 3 f. 17 f. 22 f. 48 sp., 22 sp., 181 sp., 2 var., 6 var., 21 var., 1 f. 2 f. 8 f. 49 sp., 257 sp., 8 var., 18 var., 1 f. 1 f. 25 sp., 24 sp., 108 sp., 1 var. 2 var. 5 var. - - 3 sp. 5 sp., 4 sp., 26 sp., 5 var., 6 var., 17 var., 4 f. 25 f. 30 f. 160 sp., 104 sp., 613 sp., 11 var., 40 var., 82 var., 8 f. 45 f. 61 f. - 76 sp., 2 sp. 4 f. 8 var., 1 sp. 1 f. 114 VU 20 sp. 10 sp. - sp., - 8 var. NT 14 sp. LC 1 sp. 12 sp., 2 var. 1 sp. 2 sp. 31 sp. - - 1 sp. - DD - 3 sp. - 1 f. Total 63 sp., 35 sp., 1 var., 6 var., 3 f. 4 f. 14 sp., 6 var. - 246 4 sp. sp., 24 var., 1 f. 1 sp. 64 sp., 2 var. The number of threatened species, varieties and forms of microalgae in the present Red List shows that they comprise 14% of the total algal biodiversity of Bulgaria, and together with the 88 threatened macroalgae enlisted in TEMNISKOVA ET AL. (2008), they constitute 15% of all algae reported for the country. Table 1. Red List of Bulgarian microalgae: CS - conservation status (CR - Critically Endangered, EN Endangered, VU - Vulnerable, NT - Near Threatend, LC - Least Concern, DD - Data Defficient); A-G criteria in 1-4 categories (described in details in Stoyneva et al., this volume), where: A - number of localities, B - affiliations to protected habitats of Bulgaria, C - affiliation to ecological category, D - affiliation to protected territories, E - endemism, F - general geographic distribution, G - expert weight and T - total counts. In quotes are given the original writting-outs of DD infraspecific taxa, which belong to species which have been taxonomically transferred, or taxa with author names which have been not found by the authors of this paper in the available taxonomic literature. Taxon/Conservation status and criteria CS A B C D E F G T CYANOPROKARYOTA ‒ ‒ ‒ ‒ ‒ ‒ ‒ Anabaena affinis forma Petkoff DD ‒ 4 4 2 2 2 3 20 Anabaena lapponica Borge VU 3 4 4 4 4 4 4 28 Anabaena oscillarioides f. intermedia Petkoff CR 4 3 4 4 4 4 4 26 Anabaena pirinica Petkoff CR 3 Aphanocapsa testacea Nägeli 4 4 4 1 4 4 24 EN 3 Aphanothece nidulans Richter 4 4 4 1 2 3 21 EN 3 Aulosira valkanovii Draganov 2 4 2 4 4 4 23 EN 3 1 4 1 4 4 4 22 Calothrix hollerbachii Draganov EN 4 3 4 3 1 4 4 23 Calothrix thermalis Hasngirg ex Bornet et Flahault EN 4 2 4 1 1 2 1 14 Chroococcus cohaerens (Brébisson) Nägeli NT 3 1 4 3 1 4 1 18 Chroococcus helveticus Nägeli VU 4 3 4 1 1 2 1 16 Chroococcus membraninus (Meneghini) Nägeli NT 4 Chondrocystis dermochroa (Nägeli) Komárek et Anagnostidis 3 4 3 1 3 1 19 VU 4 4 4 3 1 4 1 21 Chroococcus westii Boye-Petersen EN 4 4 4 4 1 4 3 23 Coleodesmium sagarmathae Komárek et Watanabe EN 3 Coleodesmium wrangelii ([Agardh] Bornet et Flahault) Borzi ex 4 4 2 1 2 1 17 VU 3 Geitler 4 4 3 1 2 4 22 Coelosphaerium aerugineum Lemmermann EN 4 4 4 3 1 4 1 21 Cyanobacterium diachloros (Skuja) Komárek, Kopecký et Cepák EN 4 4 4 4 3 1 3 2 21 Cylindrospermum alatosporum Fritsch EN 1 4 2 4 4 4 22 Cylindrospermum dobrudjense Draganov EN 3 1 4 1 1 3 4 18 Cylindrospermum marchicum (Lemmermann) Lemmermann VU 4 3 4 4 4 4 4 26 Cylindrospermum urumoffii Petkoff CR 3 1 4 1 1 4 1 16 Cylindrospermum voukii Pevalek NT 4 4 4 2 1 4 4 22 Eucapsis minor (Skuja) Elenkin EN 3 4 4 2 1 4 3 21 Eucapsis minuta Fritsch EN 3 Gloeocapsa alpina Nägeli 1 2 2 1 1 1 LC 1 9 4 3 4 3 1 2 1 Gloeocapsa gelatinosa Kützing VU 18 Gloeocapsa granosa (Berkeley) Kützing 1 4 1 1 4 1 16 NT 4 4 4 4 1 4 1 21 Gloeocapsa haematodes (Kützing) Kützing EN 3 1 4 1 1 2 1 14 Gloeocapsopsis crepidinum (Thuret) Geitler ex Komárek NT 4 2 4 2 1 3 1 16 Gloeothece fuscolutea (Nägeli ex Kützing) Nägeli NT 3 Gomphosphaeria virieuxii Komárek et Hindák 2 3 4 1 3 2 18 VU 3 4 4 3 1 2 1 19 Hapalosiphon fontinalis Bornet VU 4 Jaaginema geminatum (Meneghini ex Gomont) Anagnostidis et 4 3 2 1 1 1 15 Komárek NT 3 Lemmermanniella pallida (Lemmermann) Geitler 4 4 4 1 3 2 22 EN 4 2 4 3 1 2 4 19 Lyngbya lutea Gomont ex Gomont VU 3 Taxon/Conservation status and criteria Lyngbya martensiana var. mendenhalliana Kol Mastigocladus laminosus Cohn ex Kirchner Mastigocladus testarum Lagerheim ex Bornet et Flahault Merismopedia elegans A. Braun Merismopedia affixa Richter Merismopedia convoluta Brébisson ex Kützing Merismopedia insignis Škorbatov Merismopedia mediterranea Nägeli Microchaete grisea Thuret ex Bornet et Flahault Microcoleus anguiformis Harvey ex Kirchner Nostoc caeruleum Lyngbye ex Bornet et Flahault Nostoc carneum (Lyngbye) Agardh ex Bornet et Flahault Nostoc disciforme Fritsch Nostoc zetterstedtii Areschoug Oscillatoria formosa f. nalbanthis Petkoff Oscillatoria annae Van Goor Oscillatoria dzeman-sor Woronichin Phormidium bulgaricum (Komárek) Anagnostidis et Komárek Phormidium molischii (Vouk) Anagnostidis et Komárek Phormidium willei (Gardner) Anagnostidis et Komárek Rivularia rufescens Nägeli ex Bornet et Flahault Romeria alascensis (Hortobágyi et Hilliard) Komárek Scytonema bewsii Fritsch et Rich Scytonema cincinatum (Kützing) Thuret ex Bornet et Flahault Scytonema mirabile [Dillwyn] Bornet Stigonema mamillosum (Lyngbye) Agardh et Bornet et Flahault Scytonematopsis starmachii Kovácik et Komárek Stigonema turfaceum Cooke ex Bornet et Flahault Symploca thermalis Gomont Tolypothrix calcarata Schmidle Tolypothrix saviczii Kossinskaja EUGLENOPHYTA Astasia bulgarica Mihajlow Astasia sophiensis Mihajlow Phacus abrupta Korshikov Phacus angustus Drezepolski Phacus anomalus Fritsch et Rich Phacus curvicauda f. robusta Allorge et Lefèvre Phacus ichthydion Pochmann Phacus inconspicuus Deflandre Phacus inflexus (Kisselev) Pochmann Phacus janiczakii Stawinski Phacus monilatus var. suecicus Lemmermann Phacus onyx Pochmann Phacus oscillans Klebs Phacus pleuronectes f. gigas (Da Cuhna) Popova CS EN VU NT VU EN NT EN VU NT VU VU NT EN CR CR VU NT EN EN NT EN VU VU EN NT VU CR VU EN VU EN A 4 2 4 3 3 3 3 3 4 4 4 3 4 4 4 3 4 3 4 3 4 3 4 4 2 4 4 4 4 4 3 B 1 3 1 4 4 1 2 1 1 1 1 2 4 4 4 4 1 4 3 1 4 2 4 3 2 1 4 3 3 4 4 C 4 4 4 4 4 4 4 4 4 4 4 3 3 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 3 4 D 4 3 1 2 4 1 4 1 1 1 1 2 3 4 4 2 1 2 1 2 3 2 1 3 2 4 4 1 3 1 2 E 1 1 1 1 1 1 1 1 1 1 1 1 1 1 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 F 4 2 2 2 3 2 4 3 2 4 3 1 4 4 4 2 4 4 4 2 4 4 4 2 3 2 4 3 4 4 4 G 4 4 1 3 4 4 3 4 1 4 4 2 4 4 4 2 1 4 4 1 4 1 1 4 1 1 4 2 4 3 4 T 22 19 14 19 23 16 21 17 14 19 18 14 23 25 28 18 16 22 21 14 24 17 19 21 15 17 25 18 23 20 22 DD DD VU VU NT EN EN VU NT EN NT VU VU EN ‒ ‒ 4 4 4 4 4 3 4 4 3 4 4 4 ‒ ‒ 4 4 1 4 4 4 1 4 2 4 1 4 ‒ ‒ 4 4 4 4 4 4 4 4 4 4 4 4 ‒ ‒ 1 1 1 4 4 2 1 4 2 4 1 4 ‒ ‒ 1 1 1 1 1 1 1 1 1 1 1 1 ‒ ‒ 4 4 3 4 3 2 3 4 1 2 3 3 ‒ ‒ 1 1 1 1 1 1 1 1 1 1 4 1 ‒ ‒ 19 19 15 22 21 17 15 22 14 20 18 21 Taxon/Conservation status and criteria Phacus polytrophos Pochmann Phacus pomiformis (Conrad) Pochmann Phacus swirenkoi Skvortzov Strombomonas asymmetrica (Roll) Popova Strombomonas balvayi Bourrelly et Couté Strombomonas jaculata (Palmer) Deflandre Strombomonas morenensis Balech et Dastugue Strombomonas praeliaris var. amphora Kirjakov Strombomonas vermontii f. commune Popova Strombomonas vodenicarovii Kirjakov Trachelomonas acanthophora var. speciosa (Deflandre) Balech Trachelomonas acanthostoma var. europaea Drezepolski Trachelomonas alisoviana Skvortzov Trachelomonas elegans Conrad Trachelomonas formosa (Skvortzov) Deflandre Trachelomonas laticollis Kotlar Trachelomonas obtusa Palmer Trachelomonas ovoides Conrad Trachelomonas mirabilis var. helvetica Huber-Pestalozzi Trachelomonas pascherii Valkanov Trachelomonas perforata Averintsev Trachelomonas pseudobulla Svirenko Trachelomonas rhodopensis Valkanov Trachelomonas rugulosa Stein Trachelomonas scabra var. ovata Playfair Trachelomonas stokesiana Palmer Trachelomonas szabadosiana Huber-Pestalozzi Trachelomonas vas Deflandre Trachelomonas verrucosa f. sparseornata Deflandre Trachelomonas woycickii Kosczwara Trachelomonas zorensis Deflandre PYRRHOPHYTA Cystodinium cornifax (Schilling) Klebs Katodinium planum (Fott) Loeblich III Tetradinium intermedium Geitler Hemidinium nasutum Stein OCHROPHYTA BACILLARIOPHYCEAE Achnanthidium caledonicum (Lange-Bertalot) Lange-Bertalot Achnanthidium daonense (Lange-Bertalot) Lange-Bertalot, Monnier et Ector Achnanthidium helveticum (Hustedt) Monnier, Lange-Bertalot et Ector Achnanthidium kranzii (Lange-Bertalot) Round et Bukhtiyarova Achnanthidium kryophila (Petersen) Bukhtiyarova Achnanthidium lineare W. Smith CS NT EN NT NT NT NT VU EN EN EN EN NT NT EN EN EN NT VU EN DD NT LC CR NT EN VU NT EN EN VU VU A 3 4 4 3 3 3 3 4 4 4 4 4 4 4 4 4 3 4 4 ‒ 4 4 4 3 4 3 4 4 4 3 4 B 1 4 1 2 1 1 2 1 4 1 4 1 1 4 4 4 1 1 4 ‒ 1 1 4 2 4 4 1 4 4 4 4 C 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ‒ 4 1 4 4 4 4 4 4 4 4 4 D 1 3 1 2 1 1 2 1 1 1 4 1 1 4 4 4 1 1 4 ‒ 1 1 4 2 4 2 1 4 4 2 1 E 1 1 1 1 1 1 1 4 1 4 1 1 1 1 1 1 1 1 1 ‒ 1 1 4 1 1 1 1 1 1 1 1 F 3 4 4 2 4 4 4 4 4 4 3 4 4 4 4 4 3 4 4 ‒ 4 2 4 2 3 2 4 3 4 2 4 G 1 3 1 1 1 1 1 4 4 4 1 1 1 1 1 1 1 4 1 ‒ 1 1 4 1 1 1 1 1 1 1 1 T 14 23 16 15 15 15 17 22 22 22 21 16 16 22 22 22 14 19 22 ‒ 16 11 28 15 21 17 16 21 22 17 19 NT EN EN NT 3 4 4 3 2 4 4 2 4 4 4 4 2 4 3 2 1 1 1 1 2 3 4 2 1 1 3 1 15 21 23 15 EN 4 3 4 4 1 2 3 21 NT 2 2 4 3 1 1 2 15 NT 2 2 4 3 1 1 1 14 EN EN NT 4 3 2 3 3 2 4 4 4 4 4 2 1 1 1 2 2 1 3 4 1 21 21 13 Achnanthidium subatomoides (Hustedt) Monnier, Lange-Bertalot et Ector NT 2 2 4 2 1 1 1 13 Taxon/Conservation status and criteria Achnanthidium subatomus (Hustedt) Lange-Bertalot Achnanthidium temniskovae Ivanov et Ector Achnanthidium ventralis (Krasske) Haworth et Kelly Adlafia bryophila (Petersen) Moser, Lange-Bertalot et Metzeltin Adlafia suchlandtii (Hustedt) Lange-Bertalot Amphora eximia Carter Aneumastus stroesei (Østrup) Mann et Stickle Aulacoseira alpigena (Grunow) Krammer Aulacoseira distans (Ehrenberg) Simonsen Aulacoseira pfaffiana (Reinsch) Krammer Aulacoseira valida (Grunow) Krammer Boreozonacola hustedtii Lange-Bertalot, Kulikovskiy et Witkowski Brachysira neoexilis Lange-Bertalot Brachysira styriaca (Grunow) Ross Caloneis dubia Krammer Caloneis lauta Carter et Bailey-Watts Caloneis schumanniana (Grunow) Cleve Caloneis tenuis (Gregory) Krammer Campylodiscus hibernicus Ehrenberg Cavinula cocconeiformis (Gregory) Mann et Stickle Cavinula lapidosa (Krasske) Lange-Bertalot Cavinula pseudoscutiformis (Hustedt) Mann et Stickle Cavinula variostriata (Krasske) Mann et Stickle Cavinula weinzierlii (Schimanski) Czarnecki Chamaepinnularia schauppiana Lange-Bertalot et Metzeltin Chamaepinnularia soehrensis var. hassica (Krasske) Lange-Bertalot Cocconeis disculus (Schumann) Cleve Cocconeis neodiminuta Krammer Ctenophora pulchella var. lacerata (Hustedt) Bukhtiyarova Ctenophora pulchella var. lanceolata (O'Meara) Bukhtiyarova Cymbella aspera (Ehrenberg) Cleve Cymbella hustedtii Krasske Cymbella orientalis var. delicatula Stancheva et Ivanov Cymbopleura amphicephala (Nägeli) Krammer Cymbopleura anglica (Lagerstedt) Krammer Cymbopleura subaequalis (Grunow) Krammer Cymbopleura subaequalis var. alpestris Krammer Cymbopleura subcuspidata (Krammer) Krammer Decussata hexagona (Torka) Lange-Bertalot Diploneis fontium Reichardt et Lange-Bertalot Diploneis parma Cleve Encyonema brevicapitatum Krammer Encyonema gaeumannii (Meister) Krammer Encyonema hebridicum (Gregory) Grunow Encyonema mesianum (Cholnoky) Mann Encyonema neogracile Krammer CS NT CR EN VU EN VU VU VU EN VU EN EN VU VU VU EN EN VU DD VU VU VU VU CR EN EN VU VU DD DD NT VU CR NT VU VU EN VU CR VU VU EN NT EN NT VU A 2 3 4 3 4 3 4 2 4 3 4 3 3 4 4 4 4 3 ‒ 3 3 3 3 4 4 4 3 3 ‒ ‒ 2 3 4 2 3 3 4 3 4 4 3 4 3 4 3 2 B 2 4 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 ‒ 3 3 3 3 4 4 4 3 3 ‒ ‒ 2 3 4 2 3 3 3 3 4 3 3 4 2 3 2 3 C 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ‒ 4 4 4 4 4 4 4 4 4 ‒ ‒ 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 D 2 3 4 4 4 3 3 4 4 4 4 4 4 3 3 4 4 3 ‒ 4 4 3 3 4 4 4 3 3 ‒ ‒ 2 3 3 2 3 4 4 3 4 3 3 4 2 4 2 3 E 1 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ‒ 1 1 1 1 1 1 1 1 1 ‒ ‒ 1 1 4 1 1 1 1 1 1 1 1 1 1 1 1 1 F 1 4 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 ‒ 2 2 2 2 4 2 2 2 2 ‒ ‒ 1 2 4 1 2 2 2 2 4 2 2 2 2 2 2 2 G 2 4 3 2 3 3 2 2 3 3 4 4 2 3 3 3 3 2 ‒ 3 3 3 2 4 3 3 3 1 ‒ ‒ 1 2 4 1 2 3 3 2 4 2 2 2 2 3 2 2 T 14 26 21 19 21 19 19 18 21 20 22 21 19 20 20 21 21 17 ‒ 20 20 19 18 25 22 22 19 17 ‒ ‒ 13 18 27 13 18 20 21 18 25 19 18 21 16 21 16 17 Taxon/Conservation status and criteria Encyonema perpusillum (Cleve) Mann Encyonema reichardtii (Krammer) Mann Encyonema rostratum Krammer Encyonopsis falaisensis (Grunow) Krammer Encyonopsis krammeri Reichardt Encyonopsis naviculoides (Hustedt) Krammer Epithemia adnata var. saxonica (Kützing) Patrick Epithemia adnata var. porcellus (Kützing) Patrick Eucocconeis flexella (Kützing) Meister Eucocconeis quadratarea (Østrup) Lange-Bertalot Eunotia arculus (Grunow) Lange-Bertalot et Nörpel Eunotia arcus Ehrenberg Eunotia boreoalpina Lange-Bertalot et Nörpel-Schempp Eunotia diadema Ehrenberg Eunotia diodon Ehrenberg Eunotia faba (Ehrenberg) Grunow Eunotia flexuosa Kützing Eunotia flexuosa var. rilensis Kawecka Eunotia groenlandica (Grunow) Nörpel-Schempp et Lange-Bertalot Eunotia implicata Nörpel, Lange-Bertalot et Alles Eunotia inflata (Grunow) Norpel-Schempp et Lange-Bertalot Eunotia monodon Ehrenberg Eunotia mucophila (Lange-Bertalot, Nörpel et Alles) LangeBertalot Eunotia paludosa Grunow Eunotia pectinalis (Kützing) Rabenhorst Eunotia pseudopectinalis Hustedt Eunotia rhomboidea Hustedt Eunotia sudetica Müller Eunotia tenella (Grunow) Hustedt Eunotia triodon Ehrenberg Eunotia valida Hustedt Fragilaria alpestris Krasske Fragilaria amphicephaloides Lange-Bertalot Fragilaria tenera (Smith) Lange-Bertalot Frustulia crassinervia (Brébisson) Lange-Bertalot et Krammer Frustulia rhomboides (Ehrenberg) De Toni Frustulia saxonica Rabenhorst Genkalia boreoalpina Wojtal, Wetzel, Ector, Ognjanova-Rumenova et Buczkó Genkalia digitulus (Hustedt) Lange-Bertalot et Kulikovskiy Gomphonema acidoclinatum Lange-Bertalot et Reichardt Gomphonema amoenum Lange-Bertalot Gomphonema angustum Agardh Gomphonema carolinense Hagelstein Gomphonema exilissimum (Grunow) Lange-Bertalot et Reichardt CS VU NT EN NT EN VU DD DD VU VU VU EN VU EN EN EN VU CR VU VU VU VU A 3 3 4 2 4 4 ‒ ‒ 3 3 3 4 3 3 3 3 3 4 3 3 3 3 B 3 3 3 3 3 3 ‒ ‒ 3 3 3 3 3 3 4 4 3 4 3 3 3 3 C 4 4 4 4 4 4 ‒ ‒ 4 4 4 4 4 4 4 4 4 4 3 4 4 4 D 4 3 4 3 4 3 ‒ ‒ 3 4 4 4 4 3 3 3 4 4 3 3 4 3 E 1 1 1 1 1 1 ‒ ‒ 1 1 1 1 1 1 1 1 1 4 1 1 1 1 F 2 1 2 1 2 2 ‒ ‒ 2 2 2 2 2 4 2 2 2 4 2 2 2 2 G 2 1 3 1 3 2 ‒ ‒ 3 3 3 4 2 4 4 4 3 4 2 2 2 3 T 19 16 21 15 21 19 ‒ ‒ 19 20 20 22 19 22 21 21 20 28 17 18 19 19 EN 3 3 4 4 1 2 4 21 VU VU EN VU EN VU EN VU VU VU VU VU VU VU 3 3 3 3 4 3 3 3 3 3 3 3 3 3 3 3 3 3 4 4 3 4 4 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 4 4 4 4 3 3 4 4 3 3 4 3 3 3 4 3 3 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 4 2 2 2 2 2 2 2 2 2 1 1 2 2 4 3 3 2 4 2 2 2 2 3 2 3 18 18 23 20 21 19 21 19 19 18 19 19 17 18 EN 4 3 4 4 1 2 3 21 VU NT VU NT EN NT 3 2 3 3 4 2 3 2 3 3 3 2 4 4 4 4 4 4 3 3 3 2 3 2 1 1 1 1 1 1 2 1 2 1 4 1 3 1 3 1 3 1 19 14 19 15 22 13 Taxon/Conservation status and criteria Gomphonema gracile Ehrenberg Gomphonema hebridense Gregory Gomphonema intricatum Kützing Gomphonema lateripunctatum Reichardt et Lange-Bertalot Gomphonema neonasutum Lange-Bertalot et Reichardt Gomphonema parvulius (Lange-Bertalot et Reichardt) LangeBertalot et Reichardt Gomphonema productum (Grunow) Lange-Bertalot et Reichardt Gomphonema rhombicum Fricke Gomphonema sarcophagus Gregory Gomphonema subtile Ehrenberg Gomphonema utae Lange-Bertalot et Reichardt Hygropetra balfouriana (Grunow) Krammer et Lange-Bertalot Karayevia laterostrata (Hustedt) Round et Bukhtiyarova Karayevia suchlandtii (Hustedt) Buktiyarova Kobayasiella jaagii (Meister) Lange-Bertalot Kobayasiella parasubtilissima (Kobayasi et Nagumo) Lange-Bertalot Mastogloia smithii var. lacustris Grunow Melosira dickiei (Thwaites) Kützing Navicula angusta Grunow Navicula bremensis Hustedt Navicula concentrica Carter et Bailey-Watts Navicula detenta Hustedt Navicula medioconvexa Hustedt Navicula oligotraphenta Lange-Bertalot et Hofmann Navicula porifera var. opportuna (Hustedt) Langе-Bertalot Navicula schmassmanii Hustedt Navicula striolata (Grunow) Lange-Bertalot Navicula tridentula Krasske Navicula utermoehlii Hustedt Navicula vulpina Kützing Neidiopsis levanderi (Hustedt) Lange-Bertalot et Metzeltin Neidium affine (Ehrenberg) Pfizer Neidium alpinum Hustedt Neidium ampliatum (Ehrenberg) Krammer Neidium bisulcatum (Lagerstedt) Cleve Neidium bisulcatum var. subampliatum Krammer Neidium hercynicum Mayer Neidium iridis (Ehrenberg) Cleve Nitzschia alpina Hustedt Nupela impexiformis Lange-Bertalot Nupela lapidosa (Krasske) Lange-Bertalot Nupela silvahercynia (Lange-Bertalot) Lange-Bertalot Orthoseira roeseana (Rabenhorst) O'Meara Pinnularia acutobrebissonii Kulikovskiy, Lange-Bertalot et Metzeltin Pinnularia angusta var. rostrata Krammer CS VU VU VU VU VU A 2 3 3 3 4 B 3 3 3 3 3 C 4 4 4 4 4 D 3 4 3 3 3 E 1 1 1 1 1 F 2 2 2 2 2 G 2 2 2 2 3 T 17 19 18 18 20 EN 4 3 4 4 1 2 3 21 VU LC VU EN VU VU VU EN EN VU EN DD NT EN EN EN VU VU VU EN VU EN DD EN EN VU EN NT VU EN EN VU VU EN VU EN VU 2 1 3 4 4 4 3 4 4 3 4 ‒ 2 4 3 3 3 3 3 3 4 3 ‒ 4 3 3 4 3 3 4 4 3 3 4 3 3 3 3 2 3 3 3 3 4 3 3 3 3 ‒ 2 3 4 3 2 2 3 3 3 3 ‒ 3 3 3 3 3 3 3 3 4 3 3 3 4 3 4 4 4 4 4 4 4 4 4 4 4 ‒ 4 4 4 4 4 4 4 4 4 4 ‒ 4 4 4 4 4 4 4 4 4 4 4 4 4 4 3 2 3 4 3 3 3 4 4 3 4 ‒ 3 4 3 3 2 2 3 4 3 4 ‒ 4 4 3 4 3 3 3 3 3 3 4 3 4 3 1 1 1 1 1 1 1 1 1 1 1 ‒ 1 1 1 1 1 1 1 1 1 1 ‒ 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 2 2 2 2 2 2 2 2 2 ‒ 1 2 2 3 2 2 2 2 2 2 ‒ 2 2 1 2 1 2 2 2 2 2 2 2 4 2 3 1 2 3 2 3 3 3 3 2 3 ‒ 3 3 4 4 3 3 4 4 3 4 ‒ 3 4 2 3 1 3 4 4 3 2 3 2 4 2 18 12 18 21 19 20 20 21 21 18 21 ‒ 16 21 21 21 17 17 20 21 20 21 ‒ 21 21 17 21 16 19 21 21 20 18 21 18 24 18 DD ‒ ‒ ‒ ‒ ‒ ‒ ‒ ‒ EN 4 3 4 4 1 2 3 21 Taxon/Conservation status and criteria Pinnularia appendiculata (Agardh) Schaarschmidt Pinnularia bicapitata (Lagerstedt) Cleve Pinnularia biceps Gregory Pinnularia borealis var. scalaris (Ehrenberg) Rabenhorst Pinnularia brandelii Cleve Pinnularia braunii (Grunow) Cleve Pinnularia brevicostata Cleve Pinnularia crucifera Cleve Pinnularia divergens Smith Pinnularia divergentissima (Grunow) Cleve Pinnularia diversa Østrup Pinnularia eifeliana (Krammer) Krammer Pinnularia gentilis (Donkin) Cleve Pinnularia gigas Ehrenberg Pinnularia hemiptera (Kützing) Rabenhorst Pinnularia intermedia (Lagerstedt) Cleve Pinnularia isselana Krammer Pinnularia lata (Brébisson) Smith Pinnularia lundii Hustedt Pinnularia marchica Ilka Schönfelder Pinnularia mayeri Krammer Pinnularia microstauron var. nonfasciata Krammer Pinnularia neomajor var. inflata Krammer Pinnularia nobilis (Ehrenberg) Ehrenberg Pinnularia obscura Krasske Pinnularia platycephala (Ehrenberg) Cleve Pinnularia rabenhorstii (Grunow) Krammer Pinnularia rhombarea Krammer Pinnularia schoenfelderi Krammer Pinnularia schroederi (Hustedt) Cholnoky Pinnularia scotica Krammer Pinnularia stomatophora (Grunow) Cleve Pinnularia stomatophora var. irregularis Krammer Pinnularia subcommutata Krammer Pinnularia subrupestris var. cuneata Krammer Pinnularia sudetica (Hilse) Hilse Pinnularia tirolensis var. julma Krammer Placoneis abiskoensis (Hustedt) Lange-Bertalot et Metzeltin Placoneis ignorata (Schimanski) Lange-Bertalot Placoneis pseudanglica Cox Platessa rupestris (Krasske) Lange-Bertalot Psammothidium bioretii (Germain) Bukhtiyarova et Round Psammothidium curtissimum (Carter) Aboal Psammothidium didymum (Hustedt) Bukhtiyarova et Round Psammothidium marginulatum (Grunow) Bukhtiyarova et Round Psammothidium oblongellum (Østrup) Van de Vijver CS VU DD VU VU VU VU EN DD EN EN EN VU DD DD VU VU VU VU VU VU VU VU VU DD EN EN EN EN VU VU VU VU VU VU VU DD VU VU VU NT EN NT VU VU VU VU A 3 ‒ 2 3 4 3 3 ‒ 4 4 4 4 ‒ ‒ 3 3 3 4 4 4 3 3 4 ‒ 4 4 4 4 3 4 4 3 4 4 4 ‒ 4 4 3 3 4 1 3 3 3 3 B 3 ‒ 4 3 3 4 3 ‒ 3 3 3 3 ‒ ‒ 3 4 3 3 3 3 3 3 3 ‒ 3 3 3 3 3 3 3 3 3 3 3 ‒ 3 3 3 2 4 3 3 3 3 3 C 4 ‒ 4 4 4 4 4 ‒ 4 4 4 4 ‒ ‒ 4 4 4 3 4 4 4 4 4 ‒ 4 4 4 4 3 4 4 3 4 4 4 ‒ 4 4 4 4 4 4 4 4 4 4 D 3 ‒ 3 3 3 3 4 ‒ 4 4 4 3 ‒ ‒ 3 3 3 4 3 3 3 3 4 ‒ 4 4 4 4 3 4 3 3 4 3 3 ‒ 3 3 3 2 3 2 4 4 4 3 E 1 ‒ 1 1 1 1 1 ‒ 1 1 1 1 ‒ ‒ 1 1 1 1 1 1 1 1 1 ‒ 1 1 1 1 1 1 1 1 1 1 1 ‒ 1 1 1 1 1 1 1 1 1 1 F 2 ‒ 2 2 2 2 2 ‒ 2 2 2 2 ‒ ‒ 2 2 2 2 2 2 2 2 2 ‒ 2 2 2 2 2 2 2 2 2 2 2 ‒ 2 2 2 2 3 1 2 2 2 2 G 2 ‒ 2 3 3 3 4 ‒ 3 4 4 3 ‒ ‒ 2 2 2 3 2 2 2 2 2 ‒ 3 4 3 3 3 2 3 2 2 2 3 ‒ 3 3 2 1 4 2 3 3 3 3 T 18 ‒ 18 19 20 20 21 ‒ 21 22 22 20 ‒ ‒ 18 19 18 20 19 19 18 18 20 ‒ 21 22 21 21 18 20 20 17 20 19 20 ‒ 20 20 18 15 23 14 20 20 20 19 Taxon/Conservation status and criteria CS A B C D E F G T 3 4 3 1 2 3 19 Psammothidium pseudoswazi (Carter) Bukhtiyarova et Round VU 3 3 4 3 1 2 4 20 Psammothidium rechtense (Leclercq) Lange-Bertalot VU 3 3 4 4 1 2 3 20 Psammothidium sacculum (Carter) Bukhtiyarova VU 3 3 4 3 1 1 1 16 Pseudostaurosira pseudoconstruens (Marciniak) Williams et Round NT 3 4 4 3 1 2 4 21 Rossithidium nodosum (Cleve) Aboal EN 3 3 4 3 1 2 2 18 Rossithidium petersennii (Hustedt) Round et Bukhtiyarova VU 3 3 4 4 1 2 2 19 Rossithidium pusillum (Grunow) Round et Bukhtiyarova VU 3 ‒ ‒ ‒ ‒ ‒ ‒ ‒ Sellaphora americana (Ehrenberg) Mann DD ‒ 3 4 3 1 2 4 21 Sellaphora disjuncta (Hustedt) Mann EN 4 3 4 3 1 2 3 19 Sellaphora laevissima (Kützing) Mann VU 3 3 4 4 1 2 3 21 Sellaphora perhibita (Hustedt) Lange-Bertalot et Cantonati EN 4 3 4 4 1 2 2 19 Stauroneis acidoclinata Lange-Bertalot et Werum VU 3 3 4 4 1 2 3 21 Stauroneis anceps Ehrenberg EN 4 4 4 3 1 2 2 19 Stauroneis gracilis Ehrenberg VU 3 4 4 3 1 2 2 19 Stauroneis kriegerii Patrick VU 3 3 4 3 1 2 2 18 Stauroneis phoenicenteron (Nitzsch) Ehrenberg VU 3 ‒ ‒ ‒ ‒ ‒ ‒ ‒ Stauroneis phoenicenteron var. lanceolata (Kützing) Brun DD ‒ 3 4 3 1 2 3 20 Stauroneis siberica (Grunow) Lange-Bertalot et Krammer VU 4 3 4 4 1 2 3 21 Stauroneis tackei (Hustedt) Krammer et Lange-Bertalot EN 4 3 4 3 1 2 3 19 Stenopterobia delicatissima (Lewis) Brébisson VU 3 ‒ ‒ ‒ ‒ ‒ ‒ ‒ Stenopterobia intermedia (Lewis) Van Heurck DD ‒ 3 4 4 1 2 3 21 Surirella bifrons Ehrenberg EN 4 ‒ ‒ ‒ ‒ ‒ ‒ ‒ Surirella biseriata var. constricta (Ehrenberg) Grunow DD ‒ 3 4 4 1 2 3 20 Surirella spiralis Kützing VU 3 4 4 3 1 2 2 19 Surirella tenera Gregory VU 3 Tetracyclus rupestris (Kützing) Grunow DD Note: The list of diatoms contains only freshwater taxa, due to scarce data on other ecological groups in the country. CHRYSOPHYCEAE 1 4 1 1 4 1 16 Bicosoeca depoucquesiana Bourrelly NT 4 4 1 4 1 1 2 1 14 Bicosoeca urceolata Fott NT 1 4 1 1 4 1 16 Chromulina globosa Pascher NT 4 1 4 1 1 4 1 16 Chromulina hokeana Pascher NT 4 4 4 3 1 4 1 21 Chromulina pascheri Hofeneder EN 4 1 4 1 1 4 1 16 Chrysocapsa planktonica Pascher NT 4 4 4 3 1 3 1 20 Chrysostephanosphaera globulifera Scherffel VU 4 4 4 3 1 4 1 21 Dinobryon annulatum Hilliard et Asmund EN 4 1 4 1 1 2 1 14 Dinobryon bavaricum Imhof NT 4 4 4 4 3 1 4 1 21 Dinobryon behningii Swirenko EN 4 4 2 1 2 1 17 Dinobryon borgei Lemmermann VU 3 4 4 3 1 4 4 24 Dinobryon elegans f. glabra Korshikov EN 4 4 4 3 1 2 1 19 Dinobryon eurystoma (Stokes) Lemmermann VU 4 Dinobryon korshikovii Matvienko 4 4 2 1 4 4 22 EN 3 Dinobryon sertularia var. protuberans (Lemmermann) Krieger 4 4 3 1 4 1 21 EN 4 4 4 3 1 4 1 21 Dinobryon stokesii var. neustonicum Petersen et Hanzen EN 4 4 4 2 1 4 3 21 Epipyxis marchica (Lemmermann) Hilliard et Asmund EN 3 Epipyxis proteus (Wisłouch) Hilliard et Asmund 3 4 4 2 1 4 1 19 VU Taxon/Conservation status and criteria Epipyxis stokesii (Lemmermann) Smith Kephyrion cupuliforme Conrad Kybotion globosum (Matvienko) Bourrelly Mallomonas valkanoviana (Valkanov) Conrad (Syn. Mallomonas pyriformis Valkanov) Paraphysomonas takahashi Cronberg et Kristiansen Monosiga vitošensis Valkanov Phaeodermatium rivulare Hansgirg Polykyrtos vitreus Pascher Spiniferomonas abei Takahashi Syncrypta pallida (Korschikov) Bourrelly SYNUROPHYCEAE Mallomonas actinoloma var. maramuresensis Péterfi et Momeu XANTHOPHYCEAE Arachnochloris maior Pascher Botryochloris cumulata Pascher Botrydiopsis arhiza Borzì Botrydium corniforme Wodenitscharov Botrydium milleri Wodenitscharov Botrydium pachydermum Miller Botrydium tuberosum Iyengar Bumilleriopsis closterioides Pascher Bumilleriopsis peterseniana Vischer et Pascher Centritractus africanus Fritsch et Rich Centritractus belenophorus var. skujae Kiriakov Centritractus brunneus Fott Centritractus heteracanthus Vodeničarov Chlorobotrys regularis (W. West) Bohlin Goniochloris triradiata Pascher Mischococcus sphaerocephalus Vischer Ophiocytium arbuscula (A. Braun) Rabenhorst Ophiocytium lagerheimii Lemmermann Raphidiella fascicularis Pascher Trachychloron regulare Pascher Trachydiscus minutus (Bourrelly) Fott Trachydiscus sexangulatus Ettl Tribonema tenerrimum Heering PHAEOTHAMNIOPHYCEAE Phaeoschizochlamys mucosa Lemmermann Phaeothamnion confervicola Lagerheim EUSTIGMATOPHYCEAE Visheria gibbosa Pascher Vischeria undulata Pascher Vischeria stellata (Chodat ex Poulton) Pascher HAPTOPHYTA Hymenomonas coccolithophora Massart et Conrad CS EN EN EN A 4 4 3 B 4 4 4 C 4 4 4 D 4 3 2 E 1 1 1 F 4 4 4 G 1 4 4 T 22 24 22 CR CR CR EN VU EN EN 4 4 4 4 4 4 4 4 4 4 4 1 4 4 4 4 4 4 4 4 4 1 4 3 3 1 4 3 4 4 4 1 1 4 1 4 4 4 3 4 3 4 4 1 4 2 4 1 4 25 25 27 21 19 24 24 VU 3 4 4 4 1 3 1 20 EN EN NT CR EN VU VU EN NT NT EN NT EN VU VU VU VU VU VU CR NT NT DD 4 4 3 4 3 3 4 4 3 3 4 3 4 3 4 3 4 3 4 4 3 3 ‒ 4 4 4 4 4 1 1 4 4 2 1 1 1 4 4 2 4 4 1 4 1 1 ‒ 4 4 2 4 4 4 4 4 3 4 4 4 4 4 4 4 4 4 4 4 4 4 ‒ 3 4 1 4 4 2 1 3 3 2 1 1 1 2 2 2 2 2 1 4 1 1 ‒ 1 1 1 4 1 1 1 1 1 1 4 1 4 1 1 1 1 1 1 1 1 1 ‒ 4 4 2 4 4 4 4 4 1 3 4 4 4 2 4 4 1 4 4 4 4 4 ‒ 3 1 1 4 4 4 4 2 1 1 4 1 4 1 1 1 3 1 4 4 1 1 ‒ 23 22 14 28 24 19 19 22 16 16 22 15 22 17 20 17 19 19 19 25 15 15 ‒ CR CR 4 4 4 4 4 4 4 3 4 4 4 3 4 4 28 26 EN EN EN 4 4 4 4 4 3 3 3 3 3 4 3 1 1 4 4 4 3 2 2 3 21 22 23 EN 3 2 4 2 1 4 4 23 Taxon/Conservation status and criteria CHLOROPHYTA Ankistrodesmus setigerus var. undosus Hortobágyi Borodinella polytetras Miller Bulbochaete basispora Wittrock et Lundell ex Hirn Bulbochaete tenuis Hirn Binuclearia tectorum (Kützing) Beger Botryococcus neglectus (W. et G.S. West) Komárek et Marvan Carteria rotunda Ettl H. et O. Catena viridis Chodat Chlainomonas rubra (Stein et R.C.Brooke) Hoham Chlorococcum pinquideum Arce et Bold Choricystis hindakii Tell Closteridium petkovii Vodenicharov Coelastrella aeroterrestrica Tschaikner, Gärtner et Kofler Coelastrella terrestris (Reisigl) Hegewald et Hanagata Coelastropsis costata (Korshikov) Fott et Kalina Coelastrum proboscideum f. minor Petkoff Coelastrum scabrum Reinsch Crucigeniopsis divergens (Smith) Hindák Dangeardinella saltathrix Pascher Desmodesmus grahneisii (Heynig) Hegewald Desmodesmus pannonicus (Hortobágyi) Hegewald Desmodesmus pseudodenticulatus (Hegewald) Hegewald Desmodesmus serratus (Corda) S. S. An, Friedl et Hegewald Dichotomococcus bacillaris Komárek Dichotomococcus capitatus Korshikov Dichotomococcus curvatus Korshikov Dicloster acuatus Jao, Wei et Hu Dictyosphaerium granulatum Hindák Didymocystis inermis (Fott) Fott Didymogenes anomala (Smith) Hindák Dimorphococcus lunatus A. Braun Dispora crucigenioides Printz Dispora speciosa Korshikov Dunaliella lateralis Pascher et Jahoda Elakatothrix gelatinosa Wille Elakatothrix parvula (Archer) Hindák Ellipsoidion solitarе (Geitler) Pascher Enallax costatus (Schmidle) Pascher Enallax coelastroides (Bohlin) Skuja Geminella interrupta Turpin Geminella minor (Nägeli) Heering Glaucocystis nostochinearum var. incrassata Lemmermann Gloeoocystis major f. sphaerica Petkoff Gloeocystis vesiculosa var. alpina Schmidle Glochiococcus aciculiferus (Lagerheim) Silva CS A B C D E F G T DD NT VU VU NT EN VU EN EN VU VU CR CR CR EN DD VU VU EN EN VU CR NT VU VU NT CR EN VU VU VU VU EN EN NT EN EN NT VU NT VU CR CR EN NT ‒ 4 3 4 3 4 4 4 4 4 4 4 4 4 4 ‒ 4 3 4 4 3 4 2 3 4 3 4 4 3 3 2 3 3 4 3 4 4 2 2 4 4 4 4 3 2 ‒ 3 4 4 4 4 4 4 1 4 1 4 2 4 4 ‒ 4 4 4 4 2 4 2 2 1 2 4 4 4 2 2 4 4 4 2 4 4 4 4 1 4 4 4 4 2 ‒ 4 4 4 2 4 4 3 4 1 4 4 4 4 4 ‒ 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 3 4 4 4 4 4 4 4 ‒ 1 4 1 2 3 2 3 4 4 3 3 4 4 3 ‒ 3 2 4 4 2 4 2 2 1 2 4 3 2 2 2 2 2 4 2 4 4 2 2 1 3 4 4 4 2 ‒ 1 1 1 1 1 1 1 1 1 1 4 4 4 1 ‒ 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 4 1 1 ‒ 2 2 2 2 3 4 4 3 4 4 4 4 2 4 ‒ 2 4 4 4 4 4 1 4 4 2 4 4 4 4 2 2 4 4 2 4 4 2 4 2 2 4 4 4 2 ‒ 1 1 1 1 2 1 4 4 1 1 4 4 4 1 ‒ 1 1 3 2 1 4 4 1 3 1 4 4 2 1 4 3 3 1 1 1 2 1 1 1 1 4 4 1 1 ‒ 16 19 17 15 21 20 23 21 19 18 27 26 26 21 ‒ 19 19 24 23 17 25 16 17 18 15 25 24 20 17 17 19 21 22 15 22 23 15 18 14 19 25 28 21 14 Taxon/Conservation status and criteria Gloeotaenium loitlesbergerianum Hansgirg Gongrosira calcifera Krieger Gongrosira debaryana Rabenhorst Gongrosira incrustans (Reinsch) Schmidle Gongrosira schmidlei Richter Gongrosira scourfieldii G. S. West Granulocystopsis calyptrata Hindák Heleochloris pallida Korshikov Hindakia tetrachotoma (Printz) C. Bock, Pröschold et Krienitz Hydrianum gracile Korshikov Hydrianum viride (Scherffrel) Ettl Interfilum paradoxum Chodat et Topali Juraniella javorkae (Hortobagyi) Hortobagyi Kentrosphaera bristoliae Smith Keratococcus saxatilis (Komarková-Legnerová) Hindák Koliella spiculiformis (Vischer) Hindák Lagerheimia circumfilata (Seligo) Hegewald et Schmidt Lanceola spatulifera (Korshikov) Hindák Lauterborniella elegantissima Schmidle Lobocystis michevii Stoyneva Lobomonas francei Dangeard Lobomonas gracilis Christen Lobomonas irregularis Wawrik Lobomonas monstruosa Korshikov Lobomonas stellata Chodat Macrochloris multinucleata (Reisigl) Ettl et Gärtner Micracantha minutissima Korshikov Micractinium crassisetum Hortobágyi Micractinium valkanovii Vodenicharov Microspora formosana Okada Microspora irregularis (West et G. S. West) Wichmann Microspora loefgrenii (Nordstedt) Lagerheim Microthamnion kutzingianum f. madarense Petkoff Neglectella eremosphaerophila Vodeniĉarov et Benderliev Neodesmus danubialis Hindák Nephrochloris incerta Geitler et Gimesi Nephroselmis discoidea Skuja Oedogonium acrosporum De Bary ex Hirn Oedogonium acrosporum var. bathmidosporum Hirn Oedogonium balcanicum Petkoff Oedogonium braunii Kützing ex Hirn Oedogonium borisianum Wittrock ex Hirn Oedogonium cardiacum var. polymorphum Petkoff Oedogonium crispum Wittrock ex Hirn Oedogonium cyathigerum Wittrock ex Hirn Oedogonium cyathigerum var. rumelica Istvanffi CS CR EN VU NT VU VU EN EN VU EN VU EN NT VU VU CR EN VU VU CR VU EN EN NT NT CR NT VU DD CR EN EN EN CR NT EN VU VU VU DD NT VU DD VU VU DD A 4 4 3 3 4 3 4 4 3 3 3 4 3 4 3 4 4 3 2 4 4 4 4 4 4 3 4 3 ‒ 4 3 4 4 4 4 4 3 1 4 ‒ 4 4 ‒ 4 4 ‒ B 4 4 4 2 4 4 4 4 4 4 4 4 1 1 4 4 4 2 2 4 1 4 4 1 1 2 1 2 ‒ 4 4 4 1 4 1 4 2 4 4 ‒ 1 4 ‒ 1 4 ‒ C 4 4 4 4 4 4 4 4 4 4 4 3 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ‒ 4 4 4 4 4 4 4 4 4 4 ‒ 4 4 ‒ 4 4 ‒ D 4 4 3 2 1 1 3 4 2 4 4 4 1 1 2 4 3 2 2 4 1 1 3 1 1 4 1 2 ‒ 4 4 4 3 4 1 3 2 3 3 ‒ 1 3 ‒ 1 1 ‒ E 1 1 1 1 1 1 1 1 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 4 1 1 ‒ 1 1 4 4 4 1 1 1 1 1 ‒ 1 1 ‒ 1 1 ‒ F 4 3 2 2 4 4 4 4 2 4 2 2 4 4 2 4 4 4 4 4 4 4 4 4 4 4 4 4 ‒ 4 4 3 4 4 4 4 4 2 2 ‒ 2 2 ‒ 2 2 ‒ G 4 1 1 1 1 1 1 3 1 4 2 3 1 2 2 4 1 1 2 4 4 4 4 1 1 4 1 4 ‒ 4 1 1 4 1 1 4 1 3 1 ‒ 1 1 ‒ 4 3 ‒ T 25 21 18 15 19 18 21 24 20 24 20 21 15 17 18 25 21 17 17 25 19 22 24 16 16 25 16 20 ‒ 25 21 24 24 25 16 24 17 18 19 ‒ 14 19 ‒ 17 19 ‒ Taxon/Conservation status and criteria Oedogonium globosum Nordstedt ex Hirn Oedogonium intermedium Wittrock Oedogonium inversum f. major Petkoff Oedogonium itzigsohnii De Bary ex Hirn Oedogonium jordanovii Vodenicharov Oedogonium longatum Kützing Oedogonium magnusii forma Petkoff Oedogonium minus Wittrock ex Hirn Oedogonium oblongum Wittrock ex Hirn (Syn. Oedogonium parvulum Vodenicharov) Oedogonium orientale Jao Oedogonium plagiostomum Wittrock ex Hirn Oedogonium pringsheimii Cramer ex Hirn Oedogonium punctatostriatum De Bary ex Hirn Oedogonium pusillum Kirchner ex Hirn Oedogonium rufescens Wittrock ex Hirn Oedogonium rufescens f. intermedia Petkoff Oedogonium sociale Wittrock ex Hirn Oedogonium suecicum Wittrock ex Hirn Oedogonium vaucheri A. Braun ex Hirn Oedogonium vernale (Hassall) Wittrock Oocystis gigas f. intermedia Petkoff Oocystis irregularis (Petkoff ) Printz Oonephris palustris Komárek Palmellopsis texensis (Groover et Bold) Ettl et Gärtner Palmodictyon varium (Nägeli) Lemmermann Palmodictyon viride Kützing Paradoxia paradoxioides (Cirik) Hegewald et Reymond Parallela transversalis (Brébisson) Novis, M. Lorenz, Broady et E. A. Flint Pediastrum vagum Kützing Peterfiella alata (Peterfi) Gerloff Phacotus minusculus Bourrelly Pithophora roettleri (Roth) Wittrock Pleodorina illinoisensis Kofoid Pocillomonas flos-aquae Steinecke Porochloris filamentorum Pascher Porochloris leptochlamys Pascher Porochloris tetragona Pascher Pseudodictyochloris multinucleata (Broady) Ettl et Gartner Pseudokirchneriella extensa (Korshikov) Hindák Pseudokirchneriella gracillima (Bohlin) Hindák Pseudokirchneriella roselata (Hindák) Hindák Pseudotetrastrum punctatum (Schmidle) Hindák Pteromonas aequiciliata (Gicklhorn) Bourrelly Pteromonas cordiformis Lemmermann Pteromonas torta Korshikov CS EN VU DD EN DD VU DD EN A 4 3 ‒ 4 ‒ 3 ‒ 4 B 4 4 ‒ 4 ‒ 2 ‒ 4 C 4 4 ‒ 4 ‒ 4 ‒ 4 D 3 2 ‒ 3 ‒ 2 ‒ 3 E 1 1 ‒ 1 ‒ 1 ‒ 1 F 2 2 ‒ 2 ‒ 2 ‒ 2 G 3 1 ‒ 4 ‒ 4 ‒ 4 T 21 17 ‒ 22 ‒ 18 ‒ 22 NT EN NT VU VU VU EN DD NT VU NT DD CR CR VU CR VU VU VU 3 4 4 4 4 4 4 ‒ 3 4 3 ‒ 4 4 3 4 3 3 4 2 4 1 1 4 4 4 ‒ 2 4 2 ‒ 4 4 4 4 4 4 1 4 4 4 4 4 4 4 ‒ 4 4 4 ‒ 4 4 4 4 4 4 4 2 3 1 1 4 3 4 ‒ 2 3 2 ‒ 4 4 2 4 2 2 3 1 1 1 4 1 1 1 ‒ 1 1 1 ‒ 4 1 1 1 1 1 1 2 4 2 2 2 2 2 ‒ 2 2 2 ‒ 4 4 4 4 2 2 4 1 1 3 4 1 1 4 ‒ 1 1 1 ‒ 4 4 2 4 4 2 1 15 21 15 20 20 19 23 ‒ 15 19 15 ‒ 28 28 20 25 20 18 18 VU DD EN EN EN NT VU EN CR EN EN EN EN EN VU VU EN VU 4 ‒ 4 4 4 3 3 4 4 4 4 3 4 3 3 4 3 3 4 ‒ 4 4 3 1 4 4 4 4 1 4 4 4 4 1 4 2 4 ‒ 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 3 ‒ 1 3 3 1 2 3 4 3 4 2 4 2 2 1 3 2 1 ‒ 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 3 ‒ 4 4 2 2 4 4 4 4 4 4 2 4 4 2 1 4 1 ‒ 4 1 4 1 1 4 4 4 4 3 3 4 1 4 4 1 20 ‒ 22 21 21 13 19 24 25 24 22 21 22 22 19 17 21 17 Taxon/Conservation status and criteria Pseudodictyochloris multinucleata (Broady) Ettl et Gärtner Quadricoccus laevis Fott Quadricoccus verrucosus Fott Raciborskiella uroglenoides Svirenko Radiococcus planctonicus Lund Radiofilum conjunctivum Schmidle Radiophillum mesomorphum Skuja Raphidonema tatrae var. yellowstonense Kol Scenedesmus danubialis Hortobágyi Scenedesmus parvus (Smith) Bourrelly Scherffelia dubia (Scherffel) Pascher Schizochlamydella delicatula (West) Korshikov Scotinosphaera gibberosa (Vodenicarov et Benderliev) Wujek et Thompson (Syn.Kentrosphaera gibberosa Vodenicarov et Benderliev) Scourfeldia complanata G. S. West Selenochloris angusta Pascher Siderocelis sphaerica Hindák Skujaster asteriferus (Fott) Vodenicarov Spermatozopsis exsultans Korshikov Sphaeroplea annulina var. lata Petkoff Sphaeroplea soleirolii var. crassisepta (Rieth) Ramanathan Stigeoclonium thermale A. Braun Tetrachlorella ornata Korshikov Tetradesmus cumbricus var. apiculatus Korshikov Tetradesmus lunatus Korshikov Tetrastrum peterfii Hortobágyi Tetrastrum hortobagyi var. regulare Kirjakov et Vodeničarov Tetrastrum triacanthum Korshikov Tetrastrum triangulare (Chodat) Komárek Thorakomonas feldmannii Bourrelly Thorakomonas irregularis Korshikov Thorakomonas korschikoffii Conrad Trochiscia nivalis Lagerheim Trochiscia stellata Vodenicharov et Benderliev Trochisciopsis tetraspora f. minor Gärtner, Uzunov, Stoyneva, Kofler et Ingolić Uronema africanum Borge Uronema confervicolum Lagerheim Uronema elongatum Hodgetts Ulothrix gigas (Vischer) Mattox et Bold Uronema intermedium Bourrelly Uronema terrestre Mitra Valkanoviella vaucheriae Bourrelly Vitreochlamys=Sphaerellopsis fluviatilis (Stein) Pascher Wislouchiella planctonica Skvortzov STREPTOPHYTA Actinotaenium borgeanum (Skuja) Kouwets et Coesel CS CR NT NT VU VU EN EN EN EN VU EN VU A 4 4 4 4 4 4 4 4 3 3 4 3 B 3 1 1 1 4 4 4 1 4 4 4 4 C 4 4 4 4 4 4 4 4 4 4 4 4 D 4 1 1 1 2 4 3 4 2 2 3 2 E 4 1 1 1 1 1 1 1 1 1 1 1 F 4 3 3 4 2 2 2 4 4 2 4 3 G 4 1 1 4 2 4 4 4 4 1 2 1 T 27 15 15 19 19 23 22 22 22 17 22 18 VU EN VU EN CR VU DD NT VU NT VU CR EN DD VU EN VU VU VU VU EN 3 4 3 3 4 3 ‒ 4 3 4 4 4 3 ‒ 3 4 4 4 3 4 4 1 4 2 4 4 2 ‒ 1 3 1 1 4 4 ‒ 2 4 1 1 2 1 4 3 4 4 4 4 4 ‒ 4 4 4 4 4 4 ‒ 4 4 4 4 4 4 4 1 3 2 2 4 2 ‒ 1 3 1 1 4 3 ‒ 2 3 1 1 2 4 3 4 1 1 1 1 1 ‒ 1 1 1 1 1 1 ‒ 1 1 1 1 1 1 4 4 4 4 4 4 4 ‒ 4 2 2 4 4 4 ‒ 4 2 4 4 4 3 4 4 3 4 4 4 1 ‒ 1 4 1 4 4 4 ‒ 3 3 4 4 4 2 1 20 23 20 22 25 17 ‒ 16 20 14 19 25 23 ‒ 19 21 19 19 20 19 24 CR VU NT VU EN VU CR EN VU NT 4 3 3 3 4 3 4 4 4 4 4 2 2 4 4 2 4 1 4 1 4 4 4 4 4 4 4 4 4 4 4 1 2 2 4 2 4 1 4 1 4 1 1 1 1 1 1 4 1 1 4 4 2 2 4 4 4 4 1 4 4 2 1 4 1 4 4 4 2 1 28 17 15 20 22 20 25 22 20 16 VU 3 4 4 2 1 3 1 18 Taxon/Conservation status and criteria Actinotaenium clevei (Lundell) Teiling Actinotaenium crassiusculum (De Bary) Teiling Actinotaenium cruciferum (De Bary) Teiling Actinotaenium cucurbitinum (Bisset) Teiling Actinotaenium lagenarioides (Roy) Teiling Actinotaenium minutissimum (Nordstedt) Teiling Actinotaenium palangula (Brébisson ex Ralfs) Teiling Actinotaenium rufescens (Cleve) Teiling Actinotaenium turgidum (Brébisson ex Ralfs) Teiling "Arthrodesmus incus var. ralfsii forma Petkoff" Closterium acutum var. subrectum Petkoff Closterium bandericense Petkoff Closterium baillyanum var. belassicense Petkoff Closterium bicurvatum var. major Petkoff Closterium delpontei (Klebs) Wolle Closterium dianae var. arcuatum (Brebisson ex Ralfs) Rabenhorst Closterium dianae var. arcuatum f. crassior Roubal Closterium dianae var. pseudodianae (Roy) Krieger Closterium eboracense Turner Closterium ehrenbergii f. curtum Petkoff Closterium ehrenbergii f. rhodopea Petkoff Closterium incurvum f. intermedia Petkoff Closterium jenneri f. longior Petkoff Closterium jenneri f. minus curvata Petkoff Closterium macilentum Brébisson Closterium moniliferum f. devnense Petkoff Closterium parvulum f. longior et latior Petkoff Closterium pritchardianum Archer Closterium rostratum var. brevirostratum f. longior Petkoff Closterium rostratum var. bulgaricum Vodenicharov et Kabasanova Closterium setaceum Ehrenberg ex Ralfs Closterium venus var. robustum Petkoff "Closterium venus f. major Petkoff" Closterium ulna var. striolatum-punctatum Elenkin Cosmarium amoenum Brébisson ex Ralfs Cosmarium annulatum (Nägeli) De Bary Cosmarium bioculatum var. depressum (Schaarschmidt) Schmidle Cosmarium bulgaricum Roubal Closterium calosporum Wittrock Cosmarium conspersum var. minor Roubal Cosmarium cucumis f. tetragona Petkoff Cosmarium cymatopleurum f. minor Roubal Cosmarium bipunctatum Börgesen Cosmarium bireme var. galiciense Gutwinski Cosmarium biretum Brébisson ex Ralfs Cosmarium broomei Thwaites ex Ralfs CS EN EN VU VU EN VU VU NT NT DD CR CR EN DD NT VU CR VU VU DD DD DD DD DD NT DD DD NT DD DD DD DD DD EN VU NT VU CR VU CR CR CR VU CR VU VU A 4 4 4 3 3 3 3 3 3 ‒ 3 4 4 ‒ 4 3 4 4 3 ‒ ‒ ‒ ‒ ‒ 4 ‒ ‒ 3 ‒ ‒ ‒ ‒ ‒ 4 3 3 3 3 3 4 4 4 4 4 4 4 B 4 4 4 4 4 4 4 2 2 ‒ 3 3 1 ‒ 3 4 4 4 4 ‒ ‒ ‒ ‒ ‒ 1 ‒ ‒ 4 ‒ ‒ ‒ ‒ ‒ 4 4 2 4 4 4 1 3 4 4 4 4 1 C 4 4 4 4 4 4 4 4 4 ‒ 4 4 4 ‒ 4 4 4 4 4 ‒ ‒ ‒ ‒ ‒ 4 ‒ ‒ 3 ‒ ‒ ‒ ‒ ‒ 4 4 4 4 4 4 4 4 4 4 4 4 4 D 4 4 3 2 1 2 2 2 2 ‒ 4 4 1 ‒ 1 2 4 4 2 ‒ ‒ ‒ ‒ ‒ 1 ‒ ‒ 2 ‒ ‒ ‒ ‒ ‒ 3 2 2 2 4 2 4 4 4 3 4 3 3 E 1 1 1 1 1 1 1 1 1 ‒ 4 4 4 ‒ 1 1 4 1 1 ‒ ‒ ‒ ‒ ‒ 1 ‒ ‒ 1 ‒ ‒ ‒ ‒ ‒ 1 1 1 1 4 1 4 4 4 1 1 1 1 F 4 4 2 2 4 3 2 2 2 ‒ 4 4 4 ‒ 1 2 4 2 2 ‒ ‒ ‒ ‒ ‒ 2 ‒ ‒ 2 ‒ ‒ ‒ ‒ ‒ 4 2 2 2 4 2 4 4 4 2 4 2 2 G 1 2 1 1 4 1 1 1 1 ‒ 4 4 4 ‒ 1 1 4 1 1 ‒ ‒ ‒ ‒ ‒ 1 ‒ ‒ 1 ‒ ‒ ‒ ‒ ‒ 1 1 1 1 4 1 4 4 4 1 4 1 4 T 22 23 19 17 21 18 17 15 15 ‒ 26 27 22 ‒ 15 17 28 20 17 ‒ ‒ ‒ ‒ ‒ 14 ‒ ‒ 16 ‒ ‒ ‒ ‒ ‒ 21 17 15 17 27 17 25 27 28 19 25 19 19 Taxon/Conservation status and criteria Cosmarium calcareum Wittrock Cosmarium circulare var. messikommeri Krieger et Gerloff Cosmarium conspersum var. latum (Brébisson) West et G. S. West Cosmarium controversum West Cosmarium cylindricum Ralfs Cosmarium debaryi Archer Cosmarium galeritum var. sultanlarum Petkoff Cosmarium hammeri Reinsch Cosmarium hammeri var. homalodermum (Nordstedt) West et G. S. West Cosmarium hexalobum Nordstedt Cosmarium hornavanense Gutwinski Cosmarium hornavanense forma Petkoff Cosmarium hornavanense var. minor Roubal Cosmarium kjellmanii Wille Cosmarium logiense var. retusum Petkoff Cosmarium laeve f. fix retusa Petkoff Cosmarium minimum West et G. S. West Cosmarium moniliforme Ralfs Cosmarium nasutum f. aperta Roubal Cosmarium notabile f. media Petkoff Cosmarium novae-semliae Wille Cosmarium novae-semliae forma Petkoff Cosmarium obsoletum (Hantzsch) Reinsch Cosmarium obtusatum forma Petkoff Cosmarium ornatum Ralfs ex Ralfs Cosmarium pardalis Cohn Cosmarium punctulatum var. subpunctulatum f. major Petkoff Cosmarium quadratum var. compressum Roubal Cosmarium quadrifarium Lundell Cosmarium quadrum Lundell Cosmarium regnesi Reinsch Cosmarium speciosissimum Schmidle Cosmarium speciosum var. biforme f. minor Petkoff Cosmarium sportella Brébisson ex Kützing Cosmarium sportella f. intermedium Petkoff Cosmarium subcucumis f. minor Petkoff Cosmarium thwaitesii f. minor Petkoff Cosmarium vogesiacum Lemaire Cosmarium tumens Nordstedt Cylindrocystis jenneri (Ralfs) West et G. S. West Euastrum binale var. retusum f. minor Petkoff Euastrum bulgaricum Petkoff Euastrum crassangulatum var. conicum Roubal Euastrum crassangulatum var. recte granulatum Roubal Euastrum delpontei var. tetragonum Petkoff Euastrum denticulatum f. minor Petkoff CS VU EN VU EN NT NT CR NT A 4 4 3 4 3 2 4 3 B 4 4 1 4 2 4 4 2 C 4 4 4 4 4 4 4 4 D 3 3 2 4 2 2 3 2 E 1 1 1 1 1 1 4 1 F 2 4 2 4 3 2 4 2 G 1 1 4 1 1 1 4 1 T 19 21 17 22 16 16 27 15 NT VU VU DD CR NT CR CR VU NT CR CR VU DD NT DD VU NT DD CR VU NT VU EN CR VU CR CR DD EN VU VU CR CR CR CR EN CR 2 4 4 ‒ 3 3 4 4 4 4 4 4 3 ‒ 3 ‒ 4 3 ‒ 4 3 3 4 3 3 3 4 4 ‒ 3 4 4 4 4 4 4 4 4 2 4 4 ‒ 2 1 4 4 4 1 3 4 4 ‒ 2 ‒ 4 1 ‒ 4 4 2 1 4 4 4 4 4 ‒ 4 1 4 4 3 3 1 1 4 4 4 4 ‒ 4 4 4 4 4 4 4 4 4 ‒ 4 ‒ 4 4 ‒ 4 4 4 4 4 4 4 4 4 ‒ 4 4 4 4 4 4 4 4 4 2 3 4 ‒ 4 1 4 4 4 1 4 4 2 ‒ 2 ‒ 3 1 ‒ 4 2 2 3 2 4 2 4 4 ‒ 4 1 3 4 4 4 4 1 4 1 1 1 ‒ 4 1 4 4 1 1 4 4 1 ‒ 1 ‒ 1 1 ‒ 4 1 1 1 1 4 1 4 4 ‒ 1 1 1 4 4 4 4 4 4 2 2 2 ‒ 4 2 4 4 2 2 4 4 2 ‒ 2 ‒ 2 2 ‒ 4 2 2 2 4 4 2 4 4 ‒ 4 3 2 4 4 4 4 4 4 1 1 1 ‒ 4 1 4 4 1 1 4 4 1 ‒ 1 ‒ 1 4 ‒ 4 3 1 4 4 4 1 4 4 ‒ 1 4 1 4 4 4 4 4 4 14 19 20 ‒ 25 13 28 28 20 14 27 28 17 ‒ 15 ‒ 19 16 ‒ 28 19 15 19 22 27 17 28 28 ‒ 21 18 19 28 27 27 25 22 28 Taxon/Conservation status and criteria Euastrum dubium var. spinulosum Petkoff Euastrum erosum Lundell Euastrum erosum f. minor Roubal Euastrum gayanum De Toni Euastrum insulare (Wittrock) Roy Euastrum montanum West et G. S. West Euastrum transiens Gay Euastrum montanum var. cosmariiforme Roubal Euastrum montanum f. major Roubal Euastrum retusum f. intermedia Petkoff Euastrum sublobatum var. simile Roubal Euastrum verrucosum var. polymorphum Petkoff Genicularia spirotaenia (De Bary) De Bary Mesotaenium degreyi Turner Mesotaenium chlamydosporum var. violascens (De Bary) Krieger Mesotaenium endlicherianum var. grande f. brevior Petkoff Mesotaenium macrococcum (Kützing ex Kützing) Roy et Bisset Mesotaenium mirificum Archer Micrasterias apiculata Meneghini ex Ralfs Micrasterias crux-melitensis (Ehrenberg) Trevisan Micrasterias thomasiana Archer Micrasterias papilifera var. glabra f. riloensis Petkoff Mougeotia faveolatospora Kirjakov Mougeotia angusta (Hassall) Czurda Netrium digitus var. bulgaricum Roubal Netrium digitus var. constrictum f. minor Petkoff Netrium digitus var. lamellosum (Brébisson ex Kützing) Grönblad Netrium digitus f. rhomboideum (Grönblad) Kossinskaja Netrium naegelii (Brébisson ex Archer) West Onychonema filiforme (Ralfs) Roy et Bisset Penium asperum Petkoff Penium curtum f. majus Wille "Penium navicula var. inflatum f. longior et tenuor Petkoff" Penium polymorphum (Perty) Perty Penium spirospermum f. longior Petkoff Roya anglica G. S. West Roya pseudoclosterium (Roy) West et G. S. West Sphaerozosma aubertianum f. archeri (Gutwinski) Petlovany Sphaerozosma vertebratum Brébisson ex Ralfs Spirogyra acumbentis Vodenicarov Spirogyra adnata var. obscura Petkoff Spirogyra areolata f. subinflata Petkoff Spirogyra cavata Vodenicarov Spirogyra columbiana Czurda Spirogyra jugalis (Dillwyn) Kützing Spirogyra neglecta f. minor Petkoff CS CR VU EN VU VU VU EN CR CR CR CR CR VU VU NT DD VU EN VU VU NT CR NT NT CR CR VU VU NT VU CR CR DD NT DD VU EN EN VU EN DD DD EN VU DD DD A 3 3 3 4 3 4 4 4 3 4 4 3 3 3 4 ‒ 3 4 3 3 3 4 4 4 3 3 3 3 2 3 3 4 ‒ 4 ‒ 4 4 4 3 4 ‒ ‒ 4 3 ‒ ‒ B 3 3 1 4 4 4 4 1 3 4 1 3 4 4 1 ‒ 4 4 2 2 2 4 1 3 2 4 2 4 4 4 2 4 ‒ 1 ‒ 4 4 4 4 4 ‒ ‒ 1 2 ‒ ‒ C 4 4 4 4 4 3 3 4 4 4 4 4 4 4 4 ‒ 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ‒ 4 ‒ 4 4 4 4 4 ‒ ‒ 4 4 ‒ ‒ D 4 4 4 4 2 4 4 4 4 4 4 4 2 4 1 ‒ 2 3 2 2 1 4 1 1 4 3 2 2 2 2 4 4 ‒ 1 ‒ 1 3 4 2 4 ‒ ‒ 1 2 ‒ ‒ E 4 1 4 1 1 1 1 4 4 4 4 4 1 1 1 ‒ 1 1 1 1 1 4 1 1 4 4 1 1 1 1 4 1 ‒ 1 ‒ 1 1 1 1 4 ‒ ‒ 4 1 ‒ ‒ F 4 2 4 2 2 2 4 4 4 4 4 4 2 2 3 ‒ 2 4 2 4 2 4 4 2 4 4 2 3 2 2 4 4 ‒ 2 ‒ 2 4 4 2 2 ‒ ‒ 4 4 ‒ ‒ G 4 1 4 1 1 1 1 4 4 4 4 4 2 1 1 ‒ 1 4 4 4 1 4 1 1 4 4 4 1 1 4 4 4 ‒ 1 ‒ 1 4 1 1 1 ‒ ‒ 4 3 ‒ ‒ T 26 18 24 20 17 19 21 25 26 28 25 26 18 19 15 ‒ 17 24 18 20 14 28 16 16 25 25 18 18 16 20 25 25 ‒ 14 ‒ 17 24 22 17 23 ‒ ‒ 22 19 ‒ ‒ Taxon/Conservation status and criteria Spirogyra nitida f. varians Petkoff Spirogyra spinescens Kirjakov Spirotaenia erythrocephala Itzigsohn Spirotaenia fusiformis West et G. S. West Spirotaenia turfosa West et G. S. West Spondylosium papillosum West et G. S. West Spondylosium pygmaeum Cooke Staurastrum arachne Ralfs ex Ralfs Staurastrum avicula var. lunatum (Ralfs) Coesel et Meesters Staurastrum bieneanum Rabenhorst Staurastrum brevispina Brébisson Staurastrum capitulum Brébisson Staurastrum echinatum f. minor Petkoff Staurastrum forficulatum var. subsenarium (West et G. S. West) Coesel et Meesters Staurastrum furcigerum f. armigerum Nordstedt Staurastrum hexacerum Wittrock Staurastrum hystrix Ralfs Staurastrum inconspicuum Nordstedt Staurastrum inflexum Brébisson Staurastrum insigne Lundell Staurastrum lanceolatum Archer Staurastrum longipes (Nordstedt) Teiling Staurastrum margaritaceum Meneghini ex Ralfs Staurastrum muricatiforme var. minus Roubal Staurastrum punctulatum f. minor Petkoff Staurastrum pyramidatum West Staurastrum rugulosum Brébisson ex Ralfs Staurastrum saxonicum Bulnheim Staurastrum senarium var. spinosum Roubal Staurastrum sexcostatum var. productum forma Petkoff Staurastrum striolatum (Nägeli) Archer Staurastrum subpunctulatum Gay Staurastrum tohopecaligense var. trifurcatum West et G. S. West Staurastrum turgescens De Notaris Staurastrum vestitum var. orbelicum Petkoff Staurastrum vestitum var. semivestitum f. intermedium Petkoff Staurodesmus clepsydra (Nordstedt) Teiling Staurodesmus extensus (O. F. Andersson) Teiling Staurodesmus mucronatus var. delicatulus (G. S. West) Teiling Staurodesmus pterosporus (Lundell) Bourrelly Tetmemorus granulatus Brébisson ex Ralfs Tetmemorus intermedius Woronichin Tetmemorus laevis var. minutus (De Bary) Willi Krieger Tortitaenia alpina (Schmidle) Brook Xanthidium basidentatum (Børgesen) Coesel Xanthidium fasciculatum var. oronense West et G. S. West CS DD CR EN EN EN EN VU VU VU VU NT VU CR A ‒ 4 4 4 4 3 3 4 3 3 3 3 4 B ‒ 4 4 4 4 4 4 4 2 4 1 4 4 C ‒ 4 4 4 4 4 4 4 4 4 4 4 4 D ‒ 1 3 4 4 2 2 4 2 2 2 2 4 E ‒ 4 1 1 1 1 1 1 1 1 1 1 4 F ‒ 4 4 4 4 3 2 2 2 2 2 2 4 G ‒ 4 1 1 1 4 4 1 4 1 3 2 4 T ‒ 25 21 22 22 21 20 20 18 17 16 18 28 CR DD VU EN DD NT VU VU VU EN CR DD NT EN EN CR DD VU EN EN VU DD DD NT VU EN VU VU DD VU EN EN VU 4 ‒ 3 4 ‒ 4 4 3 3 3 4 ‒ 3 4 4 4 ‒ 4 4 4 4 ‒ ‒ 4 4 4 4 3 ‒ 3 4 4 3 4 ‒ 1 4 ‒ 1 2 4 4 4 3 ‒ 2 4 4 1 ‒ 4 4 4 4 ‒ ‒ 1 4 4 4 3 ‒ 4 4 4 4 4 ‒ 4 4 ‒ 4 4 4 4 4 4 ‒ 4 4 4 4 ‒ 4 4 4 4 ‒ ‒ 4 4 4 4 3 ‒ 4 4 4 4 4 ‒ 2 4 ‒ 1 2 2 2 3 4 ‒ 2 4 4 4 ‒ 3 4 4 3 ‒ ‒ 1 3 3 4 4 ‒ 2 4 4 3 1 ‒ 1 1 ‒ 1 1 1 1 1 4 ‒ 1 1 1 4 ‒ 1 1 1 1 ‒ ‒ 1 1 1 1 1 ‒ 1 1 1 1 4 ‒ 2 2 ‒ 2 3 3 2 2 4 ‒ 2 3 4 4 ‒ 2 3 3 2 ‒ ‒ 2 2 4 2 2 ‒ 4 4 3 4 4 ‒ 4 4 ‒ 3 4 1 4 4 4 ‒ 1 4 1 4 ‒ 1 4 3 1 ‒ ‒ 1 1 2 1 1 ‒ 1 1 4 1 25 ‒ 17 23 ‒ 16 20 18 20 21 27 ‒ 15 24 22 25 ‒ 19 24 23 19 ‒ ‒ 14 19 22 20 17 ‒ 19 22 24 20 Taxon/Conservation status and criteria Zygnema chalybeospermum Hansgirg Zygnema ericetorum var. scrobiculatum Petkoff Zygnema vaginatum Klebs CS NT DD VU A 3 ‒ 3 B 2 ‒ 4 C 4 ‒ 4 D 2 ‒ 3 E 1 ‒ 1 F 3 ‒ 3 G 1 ‒ 1 T 16 ‒ 19 Conflict of Interests The authors declare that there is no conflict of interests regarding the publication of this article. 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(Chlorococcales). – Nova Hedwigia 21: 801815. VODENIČAROV D. & KIRIAKOV I. 1970. New species of Mougeotia and Spirogyra from South Bulgaria. – Izvestiya na Prirodonaouchniya Mouzey - Plovdiv 1: 19-30 (In Bulgarian, Russian and German summ.). VODENIČAROV D. & KIRJAKOV I. 1986. Die Algen im Topolnica-Einzugsgebiet. – Naouchni Troudove Plovdivski Ouniversitet 'P. Hilendarski' 24 (1): 17-35 (In Bulgarian, Russian and German summ.). VODENIČAROV D. & KIRJAKOV I. 1987. The algae in the Cherni Osum river basin including the Steneto biosphere reserve. – In: Proceedings of the Fourth National Conference – Botany 1987, 140-147 (In Bulgarian). VODENICHAROV D. 1960a. Investigation of the Genus Botrydium Wallr. in Bulgaria. – Ukrainskiy Botanichniy Zhournal (Kiiv) 17 (2): 61-66 (In Ukrainian, Russian and English summ.). VODENICHAROV D. 1960b. New Green Algae. – Ukrainskiy Botanichniy Zhournal (Kiiv) 17 (2): 89-94 (In Ukrainian, Russian and English summ.). VODENITSCHAROW D. 1964. Beitrag zur Algenflora Bulgariens. V. – Naouchni Troudove Vish Pedagogicheski Institout 'P. Hilendarski' - Plovdiv 11 (2): 75-79 (In Bulgarian, Russian and German summ.). VODENICHAROV D. & VODENICHAROV M. 2000. Biodiversity of Fresh Water Algae in the Rila National Park. – In: SAKALIAN M. (ed), Biological Diversity of the Rila National Park, Pensoft, 137-148. VODENICHAROV D., DRAGANOV S. & TEMNSIKOVA D. 1971. Flora of Bulgaria. Algae. Sofia, Narodna Prosveta, 644 pp. (In Bulgarian). VODENICHAROV D., KIRIAKOV I. & RUSSEVA J. 1974. Composition and Dynamics of the Phytoplankton in the Ponds with Polycultural Rearing of Carp and Mineral Fertilization. – Izvestiya na Tsentura za Naouchnoizsledovatelska Razvoina i Razvoyna i Proektantska Deynost po Ribno Stopanstvo, Filial po Promishleno Ribovudstvo – Plovdiv 10: 17-34 (In Bulgarian). VODENISCHAROV D. G. & BENDERLIEV K. M. 1971. Trochiscia stellata sp. nov. (Chlorococcales). – Vish Pedagogicheski Institout – Plovdiv, Natura – Botanika 4 (1): 111-114. WODENIČAROFF D. [1957/1958] 1958b. Materialien zur Algenflora im Becken des Iskerflusses. – Ann. Univ. Sof. 51 (1): 113-123 (In Bulgarian, Russian and German summ.). WODENIČAROFF D. [1957/1958] 1959/1960. Beitrag zur Erforschung der Wasser- und Algenflora und Vegetation auf dem Ljulingebirge. – Ann. Univ. Sof. 51 (1): 61-82 (In Bulgarian, Russian and German summ.). WODENIČAROV D G. & KABASSANOVA M. S. 1970. Biometrische Untersuchungen über die Naturalpopulationen von Jochalgen der Fam. Desmidiaceae. – Izvestiya na Botanicheskiya Institout BAN (Sofia) 20: 205-217 (In Bulgarian, Russian and German summ.). WODENITSCHAROV D. 1961. Oedogonium parvulum sp. nov. – Feddes Repertorium (Berlin) 64 (1): 82-85 WODENITSCHAROV D. [1958/1959] 1960a. Beitrag zur Algenflora Bulgariens. III. – Ann. Univ. Sof. 52 (1): 137-151 (In Bulgarian, Russian and German summ.). WODENITSCHAROV D. [1958/1959] 1960c. Über die Systematik und Verbreitung von drei seltenen Cyanophyceen. – Ann. Univ. Sof. 52 (1): 105-129 (In Bulgarian, Russian and German summ.). WODENITSCHAROV D. 1962. Hydrobotanische Untersuchungen über das Urdino-Kar (N-W Rila-Gebirge). – Ann. Univ. Sof. 54-55 (1): 139-211 (In Bulgarian, Russian and German summ.). WODENITSCHAROV D. 1964. Beitrag zur Algenflora Bulgariens. V. – Naouchni Troudove Vish Pedagogicheski Institout 'P. Hilendarski' - Plovdiv 2 (2): 75-79. WOJTAL A., OGNJANOVA-RUMENOVA N., WETZEL C. E., HINZ F., PIATEK J., KAPETANOVIC T. & BUCZKO K. 2014. Diversity of the genus Genkalia in high altitude lakes - taxonomy, distribution and ecology. – Fottea, Olomouc 14 (2): 225–239. Accepted 26.01.2016 Before the publication of the final paper version of the Annual, this paper should be cited as follows: Stoyneva-Gärtner M. P., Ts. Isheva, P. Ivanov, B. A. Uzunov & P. Dimitrova 2016. Red List of Bulgarian algae. II. Microalgae. – Annual of Sofia University, Faculty of Biology, Book 2 – Botany, 100. ISSN 02049910 (Print), ISSN 2367-9190 (Online), Early view, On-line since 31st March 2016, https://www.uni-sofia.bg /index.php/bul/universitet_t/ fakulteti/biologicheski_fakultet2/oficialni_izdaniya or Stoyneva-Gärtner M. P., Ts. Isheva, P. Ivanov, B. A. Uzunov & P. Dimitrova 2016. Red List of Bulgarian algae. II. Microalgae. – Ann. Univ. Sof. 100 (2). ISSN 0204-9910 (Print), ISSN 2367-9190 (Online), Early view, On-line since 31st March 2016, https://www.uni-sofia.bg/index.php/bul/universitet_t/fakulteti/ biologicheski_fakultet2/ oficialni_izdaniya

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