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With around 2000 species, Cortinarius is the biggest genus of fungi that form mushrooms. Apart from a few species such as C. caperatus, many even so-called edible species appear to have very similar species that are at least inedible if not poisonous, or otherwise may differ in edibility geographically.
The following species are recognised in the genus Cortinarius:
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z A
Cortinarius aavae Liimat. & Niskanen (2012) Cortinarius abditus Rob. Henry (1993) – France Cortinarius aberrans Rob. Henry (1952) – France Cortinarius abietinus (Velen.) J. Favre ex Bon (1986) Cortinarius abjectus Bidaud, Carteret & Reumaux (2013) Cortinarius abnormis Watling & T.W. May (1992) – Western Australia Cortinarius absarokensis M.M. Moser & McKnight (1987) – US (Montana) Cortinarius absinthiacus M.M. Moser (1975) – Argentina Cortinarius acerbiformis Reumaux (1992) – France Cortinarius acerbus M.M. Moser & E. Horak (1975) – Argentina Cortinarius acetosus (Velen.) Melot (1987) Cortinarius achrous E. Horak, Peintner, M.M. Moser & Vilgalys (2002) – New Zealand Cortinarius achyrocephalus Melot (1989) Cortinarius aciegemmascens Rob. Henry (1991) Cortinarius acigemmascens Rob. Henry (1970) – France Cortinarius aciserratus Rob. Henry (1988) Cortinarius acutellus Bidaud & Moënne-Locc. (2003) – France Cortinarius acutibulbus Chevassut & Rob. Henry (1982) – France Cortinarius acutipapillatus Gasparini (2014) Cortinarius acutispissipes Rob. Henry (1981) – France Cortinarius acutoaltus Chevassut & Rob. Henry (1982) – France Cortinarius acutocephalus Bidaud (1997) – France Cortinarius acutoides Peck (1910) Cortinarius acutomammosus Rob. Henry (1988) Cortinarius acutopholiotoides Palazón & Mahiques (2007) Cortinarius acutoproximus Liimat. & Niskanen (2022) Cortinarius acutorum Rob. Henry (1988) Cortinarius acutovelatus Rob. Henry (1988) Cortinarius acutus (Pers.) Fr. (1838) Cortinarius adalbertii J. Favre ex M.M. Moser (1980) Cortinarius adarmeniacus Rob. Henry (1970) Cortinarius addamascenus Rob. Henry (1983) Cortinarius adfocalis Rob. Henry (1989) Cortinarius adobtusus Rob. Henry (1968) Cortinarius adrianae Ovrebo, Ammirati, Dima & Liimat. (2022) Cortinarius adustorimosus Rob. Henry (1988) Cortinarius adustus Peck (1889) Cortinarius aequalipes Rob. Henry (1988) Cortinarius aequatus Rob. Henry (1952) Cortinarius aereus Rob. Henry (1952) Cortinarius aerugineoconicus E. Horak (1990) - New Zealand Cortinarius afropurpurissimus C. Sharp (2020) Cortinarius aganochrous E. Horak (1975) Cortinarius agathosmus Brandrud, H. Lindstr. & Melot (1989) Cortinarius agnetis Melot (1989) Cortinarius ahsii McKnight (1975) Cortinarius aiacapiiae Speg. (1887) Cortinarius ainsworthii Liimat. & Niskanen (2020) – UK Cortinarius alaskaensis Liimat. & Niskanen (2021) Cortinarius albiceps Murrill (1942) Cortinarius albidifolius Peck (1888) Cortinarius albidiformis Murrill (1946) Cortinarius albidipes Peck (1912) Cortinarius albidoavellaneus Kauffman & A.H. Sm. (1933) Cortinarius albidodiscus Bidaud & Fillion (1993) Cortinarius albidofuscescens Herp. (1912) Cortinarius albidogriseus Bidaud & Reumaux (1993) Cortinarius albidulus Murrill (1939) Cortinarius albidus Peck (1891) – (North America) Cortinarius alboadustus Bidaud (2012) Cortinarius alboambitus Niskanen, Liimat. & Ammirati (2013) Cortinarius alboannulatus Contu (2001) Cortinarius albobrunnescens Liimat. & Niskanen (2021) Cortinarius albobrunneus M.M. Moser (1975) Cortinarius albobrunnoides M.M. Moser (1975) Cortinarius albocanus (E. Horak & M.M. Moser) Peintner & M.M. Moser (2002) Cortinarius albocinctus M.M. Moser (1975) Cortinarius albocyaneus Fr. (1851) Cortinarius albofimbriatus Rob. Henry (1940) Cortinarius albofulminescens Rob. Henry (1992) Cortinarius albogaudis Kytöv., Niskanen & Liimat. (2009) Cortinarius alboglobosus Kytöv., Liimat., Niskanen & Ammirati (2014) Cortinarius albolens Bidaud, Carteret & Reumaux (2012) Cortinarius albolutescens Reumaux (2001) Cortinarius alboluteus Lebeuf, Andre Paul, Liimat., Niskanen & Ammirati (2018) Cortinarius albomaculatus Rob. Henry (1988) Cortinarius albomalus Liimat. & Niskanen (2021) Cortinarius albonigrellus J. Favre (1955) Cortinarius albo-ochraceus M.M. Moser (1975) Cortinarius alboroseus (R. Heim) Peintner, E. Horak, M.M. Moser & Vilgalys (2002) Cortinarius alborufescens Imler (1955) Cortinarius albosericeus Ammirati, Beug, Liimat., Niskanen & O. Ceska (2016) Cortinarius albovariegatus (Velen.) Melot (1980) Cortinarius albovestitus Bidaud (2001) Cortinarius alboviolaceus (Pers.) Zawadzki (1835) – silver-violet webcap (Europe) Cortinarius alcalisensibilis (M.M. Moser) G. Garnier (1991) Cortinarius alces Niskanen & Liimat. (2021) Cortinarius aleuriodor Rob. Henry (1981) Cortinarius aleuriolens Chevassut & Rob. Henry (1982) Cortinarius aleuriosmus Maire (1910) – Europe Cortinarius algonquinensis Ammirati, Liimat. & Niskanen (2014) Cortinarius alienatus (E. Horak) G. Garnier (1991) Cortinarius alkalivirens Høil. & Watling (1990) Cortinarius allutoides Rob. Henry (1986) Cortinarius allutus Fr. (1838) Cortinarius alneti Bidaud (1996) Cortinarius alneus M.M. Moser (1967) Cortinarius alnophilus (M.M. Moser) Nespiak (1981) Cortinarius alopecurus (Velen.) G. Garnier (1991) Cortinarius alpicola (Bon) Bon (1992) Cortinarius alpinus Boud. (1895) Cortinarius alter Bidaud & Reumaux (2002) Cortinarius alterplex Reumaux (1996) Cortinarius altissimus E. Harrower & T.W. Henkel (2015) – Guyana Cortinarius altomellitus Rob. Henry (1985) Cortinarius alutaceo-olivascens Rob. Henry (1959) Cortinarius alutaceopallens (Rob. Henry) Bidaud (2009) Cortinarius alutarius Kałucka & Liimat. (2021) Cortinarius amanitopsidoides Rob. Henry (1995) Cortinarius amarellus Bidaud & Reumaux (1993) Cortinarius amarissimus Murrill (1946) Cortinarius amarocaerulescens Bidaud (2009) Cortinarius amarus Peck (1880) Cortinarius amazonicus Singer & I.J.A. Aguiar (1983) Cortinarius ambiens Rob. Henry (1956) Cortinarius amblyonis Soop (2016) Cortinarius americanospilomeus Liimat. & Niskanen (2021) Cortinarius americanus A.H. Sm. (1934) Cortinarius amici-mei Reumaux (2016) Cortinarius amigochrous Kühner (1989) Cortinarius ammiratii Liimat. & Niskanen (2014) Cortinarius ammoniacosplendens Chevassut & Rob. Henry (1978) Cortinarius ammophiloides Bohus (1979) Cortinarius amoenus (M.M. Moser & E. Horak) G. Garnier (1991) Cortinarius amurceus Fr. (1838) Cortinarius anauensis Soop (2001) Cortinarius andreae H. Lindstr. (1999) Cortinarius anfractoides Rob. Henry & Trescol (1987) Cortinarius anfractus Fr. (1838) Cortinarius angelesianus A.H. Sm. (1944) Cortinarius angustilamellatus Herp. (1912) Cortinarius angustisporus Kytöv., Niskanen & Liimat. (2014) Cortinarius anisatus H. Lindstr., Kytöv. & Niskanen (2005) Cortinarius anisochrous Kytöv., Liimat., Niskanen & H. Lindstr. (2013) – Europe Cortinarius anisodorus (E. Horak) Peintner & M.M. Moser (2002) Cortinarius annae-maritae Bendiksen & Brandrud (2015) Cortinarius annulatus Peck (1890) Cortinarius anocorium Liimat. & Niskanen (2021) Cortinarius anomalellus Soop (1999) Cortinarius anomalobrunneus Corrales, Ovrebo, Ammirati, Dima & Liimat. (2022) Cortinarius anomalodelicatus Ammirati, Liimat., Niskanen & Dima (2021) Cortinarius anomalomontanus Ammirati, Liimat., Niskanen & Dima (2021) Cortinarius anomalopacificus Bojantchev, Liimat., Niskanen, Dima & Ammirati (2021) Cortinarius anomalovelatus Ammirati, Berbee, E. Harrower, Liimat. & Niskanen (2014) Cortinarius anomalus (Fr.) Fr. (1838) Cortinarius anserinus (Velen.) Rob. Henry (1986) – Europe Cortinarius antarcticus Speg. (1887) – Europe Cortinarius anthracinicolor Reumaux (2001) – Europe Cortinarius anthracinus (Fr.) E. Berger (1846) Cortinarius anuliferus M.M. Moser (1975) Cortinarius apius Y. Lamoureux, Liimat. & Niskanen (2021) Cortinarius apomorphus Rob. Henry (1989) Cortinarius appalachiensis K.W. Hughes, E. Harrower, Ammirati, Niskanen & Liimat. (2014) Cortinarius appennini Consiglio, D. Antonini & M. Antonini (2005) Cortinarius aprinus Melot (1989) Cortinarius aptecohaerens Rob. Henry (1983) Cortinarius aquosus Bidaud & Fillion (2005) Cortinarius arachnoideus (Krombh.) Bidaud, Moënne-Locc. & Reumaux (1996) Cortinarius araneosovolvatus (Bon & Gaugué) Melot (1989) Cortinarius araniiti Soop (2014) Cortinarius arcabucensis M.M. Moser (1975) Cortinarius arcanus G. Moreno, Heykoop & E. Horak (2005) Cortinarius archeri Berk. (1859) – Australia Cortinarius arcifolius Rob. Henry (1936) – Europe Cortinarius ardesiacusGasparini (2008) – Australia Cortinarius aremoricus Rob. Henry (1985) Cortinarius argentatus (Pers.) Fr. (1838) Cortinarius argenteobovinus Armada & J.D. Reyes (2021) Cortinarius argenteocrinitus Rob. Henry (1984) Cortinarius argenteohygrophanus M.M. Moser (1975) Cortinarius argenteopileatus Nezdojm. (1983) Cortinarius argentostriaepes Chevassut & Rob. Henry (1982) Cortinarius argentum-silvae Melot (1989) Cortinarius argillaceoincarnatus Rob. Henry (1956) Cortinarius argillohygrophanicus M.M. Moser & E. Horak (1975) Cortinarius argillopallidus Jul. Schäff. (1947) Cortinarius argutiformis Rob. Henry (1961) Cortinarius argutipes Bidaud & Reumaux (1996) Cortinarius argyronotus Bidaud (2008) Cortinarius argyrophilus Rob. Henry (1952) Cortinarius aridus M.M. Moser (1975) Cortinarius armeniacellus Rob. Henry (1988) Cortinarius armeniacovelatus (Bougher, Fuhrer & E. Horak) Peintner, E. Horak, M.M. Moser & Vilgalys (2002) Cortinarius armeniacus (Schaeff.) Zawadzki (1835) Cortinarius armentaceus (Velen.) G. Garnier (1991) Cortinarius armillariellus Rob. Henry (1940) Cortinarius armillariopsis Rob. Henry (1970) Cortinarius armillatoazureus Bidaud & Fillion (2004) Cortinarius armillatus (Fr.) Fr. (1838) – bracelet cortinar (North America) Cortinarius arnoldae Murrill (1940) Cortinarius aromaticus (Velen.) Reumaux (2002) Cortinarius aromatizans Bidaud & Reumaux (2004) Cortinarius arquatus (Alb. & Schwein.) Fr. (1838) Cortinarius arvinaceoides Bidaud (2000) Cortinarius arvinaceus Fr. (1838) Cortinarius asper Peck (1872) Cortinarius assiduus Mahiques, A. Ortega & Bidaud (2001) Cortinarius athabascus Bojantchev (2013) – North America Cortinarius atkinsiae Matheny, Ammirati, Liimat. & Niskanen (2021) Cortinarius atkinsonianus Kauffman (1905) Cortinarius atratus (Rodway) Gasparini (2014) Cortinarius atrialbus Murrill (1945) Cortinarius atribadius Murrill (1945) Cortinarius atroacutus E. Horak & M.M. Moser (1975) Cortinarius atroalbus M.M. Moser (1993) Cortinarius atrocaeruleus M.M. Moser (1967) Cortinarius atrocinereus (Velen.) G. Garnier (1991) Cortinarius atrocoeruleoides Bidaud (2013) Cortinarius atrofuscus (Velen.) Reumaux (1982) Cortinarius atrolazulinus M.M. Moser (1987) – New Zealand Cortinarius atropileatus A.R. Nilsen & Orlovich (2018) – New Zealand Cortinarius atropurpureus (E. Horak) Kuhn.-Fink. & Peintner (2003) Cortinarius atropusillus J. Favre (1960) Cortinarius atrotomentosus E. Harrower (2015) – US (Florida) Cortinarius atroviolaceus M.M. Moser (1987) Cortinarius atrox Reumaux (2013) Cortinarius attenuatus (Velen.) G. Garnier (1991) Cortinarius auchmerus M.M. Moser (2002) Cortinarius aurae Niskanen & Liimat. (2020) – UK Cortinarius aurantiacoides Reumaux (1982) Cortinarius aurantiellus (E. Horak) G. Garnier (1991) Cortinarius aurantiobasis Ammirati & A.H. Sm. (1977) – edible, but deadly look-alikes (C. gentilis) Cortinarius aurantiocaeruleus M.M. Moser (2002) Cortinarius aurantioferreus Soop (2001) Cortinarius aurantiofulvus Hongo (1962) Cortinarius aurantiolamellatus E. Ludw. & A. Kasparek (2017) Cortinarius aurantiolamellatus E. Ludw. & A. Kasparek (2017) Cortinarius aurantiorufus Bidaud (2001) Cortinarius aurantiosplendidus Carteret & Reumaux (2008) Cortinarius aurantiotinctus Bidaud (2001) Cortinarius aurantiovillosus M.M. Moser (1975) Cortinarius aurantius (Velen.) G. Garnier (1991) Cortinarius aurasiacus Pat. (1902) Cortinarius auratior Rob. Henry (1989)