# List of Lactarius species

The fungal genus Lactarius comprises about 636 species worldwide. The type species is Lactarius torminosus. Probably the best known and most widely eaten is Lactarius deliciosus. A large number of species were split into the genus Lactifluus based on molecular phylogenetic evidence.

## Key

| Name | The binomial name of the Lactarius species. "#" indicates a species with a suggested English common name, listed further below. |
| Author | The author citation—the person who first described the species using an available scientific name, eventually combined with the one who placed it in Lactarius, and using standardized abbreviations. |
| Year | The year in which the species was named, or transferred to the genus Lactarius. |
| Classification | First is always the subgenus, then section, then (if the section is further subdivided), the subsection. |
| Distribution | The distribution of the species. |

## Species

| Species name | Author | Year | Classification | Distribution |
| Lactarius abbotanus | K.Das & J.R.Sharma | 2003 | PiperitesPiperitesScrobiculati | India |
| Lactarius abieticola | X.H. Wang | 2016 | | |
| Lactarius acatlanensis | Bandala, Montoya & A. Ramos | 2016 | | |
| Lactarius acerrimus | Britzelm. | 1893 | PiperitesZonariiZonarii | Europe |
| Lactarius acris | (Bolton) Gray | 1821 | PlinthogalusPlinthogali | Europe |
| Lactarius acutus | R.Heim | 1955 | | Guinea, French Guinea |
| Lactarius adhaerens | R.Heim | 1938 | | Madagascar |
| Lactarius adscitus | Britzelm. | 1885 | | |
| Lactarius aerugineus | (Lam.) Burl. | 1907 | | |
| Lactarius aestivus | Nuytinck & Ammirati | 2014 | | |
| Lactarius affinis# | Peck | 1873 | RussulariaTriviales | North America |
| Lactarius afroscrobiculatus | Verbeken & Van Rooij | 2003 | | |
| Lactarius agglutinatus | Burl. | 1908 | | North America |
| Lactarius akanensis | S. Imai | 1935 | | |
| Lactarius alachuanus | Murrill | 1938 | | North America |
| Lactarius albidigalus | X.H. Wang | 2018 | | |
| Lactarius albidoarmeniacus | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius albidocinereus | X.H. Wang, S.F. Shi & T. Bau | 2018 | | |
| Lactarius albocarneus | Britzelm. | 1895 | PiperitesGlutinosiPallidini | Europe |
| Lactarius albocremeus | Z. Schaef. | 1958 | | |
| Lactarius albolutescens | Thiers | 1957 | | North America |
| Lactarius alboroseus | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius alboscrobiculatus | H.T. Le & Verbeken | 2007 | | |
| Lactarius albus | Velen. | 1920 | | |
| Lactarius allochrous | Singer | 1948 | | North America |
| Lactarius alni | Singer | 1962 | | |
| Lactarius alnicola# | A.H.Sm. | 1960 | PiperitesScrobiculati | North America |
| Lactarius alpinihirtipes | X.H. Wang | 2017 | | |
| Lactarius alpinus | Peck | 1875 | | North America |
| Lactarius alutaceus | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius amarus | R. Heim | 1938 | | |
| Lactarius ambiguus | X.H. Wang | 2018 | | |
| Lactarius angiocarpus | Verbeken & U.Eberhardt | 2004 | Plinthogali | Zambia |
| Lactarius angustifolius | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius angustizonatus | X.H. Wang | 2017 | | |
| Lactarius annulocystidiatus | S. Sharma, M. Kaur & Atri | 2012 | | |
| Lactarius aquizonatus | Kytöv. | 1984 | PiperitesZonariiScrobiculati | Europe |
| Lactarius aquosus | H.T. Le & K.D. Hyde | 2015 | | |
| Lactarius arachnisporus | R. Heim & Perr.-Bertr. | 1973 | | |
| Lactarius areolatus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius argillaceifolius# | Hesler & A.H.Sm. | 1979 | TristesPseudomyxacium | |
| Lactarius argillascens | A. Pearson ex J. Blum | 1966 | | |
| Lactarius aroostookensis | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius asiae-orientalis | X.H. Wang | 2018 | | |
| Lactarius aspideus | (Fr.) Fr. | 1838 | PiperitesUvidiAspideini | Europe |
| Lactarius atlanticus | Bon | 1975 | | Europe |
| Lactarius atri | Van de Putte & K. Das | 2016 | | |
| Lactarius atrobadius | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius atrobrunneus | Wisitr. & K.D. Hyde | 2015 | | |
| Lactarius atrofuscus | X.H. Wang | 2021 | | |
| Lactarius atromarginatus | Verbeken & E. Horak | 2000 | | |
| Lactarius atro-olivaceus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius atro-olivinus | Verbeken & Walleyn | 2000 | | |
| Lactarius atrosquamulosus | X. He | 1996 | | |
| Lactarius atroviolaceus | Montoya & Bandala | 2003 | | |
| Lactarius atroviridis | Peck | 1889 | | North America |
| Lactarius aurantiaco-ochraceus | Lj.N. Vassiljeva | 1950 | | |
| Lactarius aurantiacopallens | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius aurantiacus# | (Pers.) Gray | 1821 | RussulariaRussularia | Europe |
| Lactarius aurantiobrunneus | X.H. Wang | 2019 | | |
| Lactarius aurantionitidus | Wisitr. & J.Y. Guo | 2016 | | |
| Lactarius aurantiosordidus | Nuytinck & S.L. Mill | 2006 | | northern California to Alaska |
| Lactarius aurantiozonatus | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius auriolla | Kytöv. | 1984 | PiperitesZonariiScrobiculati | Europe |
| Lactarius ausablensis | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius austrorostratus | Wisitr. & Verbeken | 2015 | | |
| Lactarius austroscrobiculatus | Verbeken & E. Horak | 2001 | | |
| Lactarius austrotabidus | Verbeken & E. Horak | 2000 | | |
| Lactarius austrotorminosus | H.T. Le & Verbeken | 2007 | | |
| Lactarius austrozonarius | H.T. Le & Verbeken | 2007 | | |
| Lactarius avellaneus | S. Imai | 1935 | | |
| Lactarius azonites | (Bull.) Fr. | 1838 | PlinthogalusPlinthogali | Europe |
| Lactarius badiopallescens | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius badiosanguineus | Kühner & Romagn. | 1954 | | Europe, North America |
| Lactarius badius | Verbeken | 1996 | | |
| Lactarius baliophaeus | Pegler | 1969 | Nigrescentes | Africa |
| Lactarius barbatus | Verbeken | 1996 | | |
| Lactarius barrowsii | Hesler & A.H.Sm. | 1979 | Lactarius | North America |
| Lactarius beardsleei | Burl. | 1945 | | |
| Lactarius beatonii | P.M. Kirk | 2015 | | |
| Lactarius benghalensis | Paloi & K. Acharya | 2018 | | |
| Lactarius bensleyae | Burl. | 1907 | | |
| Lactarius betulinus | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius bisporus | Verbeken & F. Hampe | 2014 | | |
| Lactarius blennius# | (Fr.) Fr. | 1838 | PiperitesGlutinosiPyrogalini | Europe |
| Lactarius blumii | Bon | 1979 | | |
| Lactarius borzianus | (Cavara) Verbeken & Nuytinck | 2004 | | |
| Lactarius brachycystidiatus | X.H. Wang | 2017 | | |
| Lactarius brevipes | Longyear | 1902 | | |
| Lactarius brevis | Peck | 1905 | | |
| Lactarius brunneoaurantiacus | K. Das & I. Bera | 2020 | | |
| Lactarius brunneocinnamomeus | Paloi, Verbeken & K. Acharya | 2019 | | |
| Lactarius brunneohepaticus | M.M. Moser | 1978 | | |
| Lactarius brunneoviolaceus | M.P.Christ | 1941 | PiperitesUvidiUvidini | Europe |
| Lactarius bryophilus | Peck | 1910 | | North America |
| Lactarius bubalinus | Hesler & A.H. Sm. | 1979 | | |
| Lactarius buckleyanus | Murrill | 1943 | | |
| Lactarius burkei | A.H. Sm. & Hesler | 1962 | | |
| Lactarius byssaceus | K. Das & Verbeken | 2011 | | |
| Lactarius caespitosus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius californiensis | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius camphoratus# | (Bull.) Fr. | 1838 | RussulariaOlentes | Europe |
| Lactarius capitatus# | K. Das, J.R. Sharma & Montoya | 2004 | | |
| Lactarius carbonicola | A.H.Sm. | 1960 | | North America |
| Lactarius carminascens | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius carnosus | Velen. | 1921 | | |
| Lactarius carolinensis | Hesler | 1960 | | North America |
| Lactarius cascadensis | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius castaneus | W.F. Chiu | 1945 | | |
| Lactarius castanopsidis | Hongo | 1979 | | |
| Lactarius caucae | Singer | 1973 | | |
| Lactarius caulocystidiatus | Verbeken & E. Horak | 2001 | | |
| Lactarius cavinae | Velen. | 1920 | | |
| Lactarius changbaiensis | Y. Wang & Z.X. Xie | 1984 | | |
| Lactarius chelidonium | Peck | 1872 | Lactarius | North America |
| Lactarius chichuensis | W.F. Chiu | 1945 | | |
| Lactarius chromospermus | Pegler | 1982 | | Africa |
| Lactarius chrysophyllus | Z. Schaef. | 1957 | | |
| Lactarius chrysorrheus# | Fr. | 1838 | PiperitesZonariiCroceini | Europe, North America |
| Lactarius ciliatus | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius cinereobrunneus | Stubbe & Verbeken | 2008 | Plinthogali | Malaysia |
| Lactarius cinereoroseus | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius cinereus | Peck | 1872 | | North America |
| Lactarius cinnamomeus | W.F. Chiu | 1945 | | |
| Lactarius circellatus | Fr. | 1838 | PiperitesGlutinosiPyrogalini | Europe |
| Lactarius cistophilus | Bon & Trimbach | 1978 | | Europe |
| Lactarius citrinus | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius citriolens | Pouzar | 1968 | PiperitesZonariiScrobiculati | Europe |
| Lactarius clelandii | Grgur. | 1997 | | Australia |
| Lactarius clethrophilus | Romagn. | 1974 | | |
| Lactarius clitocybiformis | Murrill | 1948 | | |
| Lactarius cocosiolens | Methven | 1985 | | North America |
| Lactarius cognoscibilis | Beardslee & Burl. | 1940 | | North America |
| Lactarius coleopteris | Coker | 1918 | | North America |
| Lactarius collybioides | X.H. Wang | 2019 | | |
| Lactarius colorascens | Peck | 1905 | | North America |
| Lactarius condimentus | Verbeken & E. Horak | 2000 | | |
| Lactarius conglutinatus | X.H. Wang | 2018 | | |
| Lactarius congolensis | Beeli | 1928 | | |
| Lactarius constans | J.E. Lange ex Romagn. | 1980 | | |
| Lactarius controversus | Pers. | 1800 | PiperitesZonariiZonarii | Europe |
| Lactarius cookei | Z. Schaef. | 1960 | | |
| Lactarius cordovaensis | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius cookei | Z. Schaef. | 1960 | | |
| Lactarius corrugatus | Verbeken & E. Horak | 2000 | | |
| Lactarius coryli | Peyronel | 1922 | | |
| Lactarius costaricensis | Singer | 1983 | | |
| Lactarius crassiusculus | H.T. Le & D. Stubbe | 2007 | | |
| Lactarius crassus | (Singer & A.H. Sm.) Pierotti | 2015 | | |
| Lactarius craterelloides | R. Heim & Gooss.-Font. | 1955 | | |
| Lactarius cremicolor | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius cremor | Fr. | 1838 | | |
| Lactarius crenulatulus | Wisitr. & Verbeken | 2014 | | |
| Lactarius crenulatus | K. Das & Verbeken | 2012 | | |
| Lactarius cretaceus | D. Stubbe & Verbeken | 2008 | | |
| Lactarius crichtonii | (G.W. Beaton, Pegler & T.W.K. Young) P.M. Kirk | 2015 | | |
| Lactarius cristulatus | Montoya & Bandala | 2003 | | |
| Lactarius croceigalus | K. Das & Verbeken | 2012 | | |
| Lactarius croceus | Burl. | 1908 | | North America |
| Lactarius cucurbitoides | H. Lee & Y.W. Lim (2015 | 2012 | | |
| Lactarius cupricolor | Z. Schaef. | 1966 | | |
| Lactarius cupularoides | Raithelh. | 1990 | | |
| Lactarius cuspidoaurantiacus | Montoya, Bandala & Garay-Serr. | 2014 | | |
| Lactarius cyaneocinereus | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius cyanopus | Basso | 1998 | | |
| Lactarius cyanotinctus | Para | 2020 | | |
| Lactarius cyathula | (Fr.) Fr. | 1838 | | |
| Lactarius cyathuliformis | Bon | 1978 | RussulariaTabidi | Europe |
| Lactarius cystidiosus | Thiers | 1957 | | |
| Lactarius dafianus | K. Das, J.R. Sharma & Verbeken | 2003 | | |
| Lactarius decipiens | Quél. | 1886 | RussulariaRussularia | Europe |
| Lactarius delicatus | Burl. | 1908 | PiperitesPiperitesScrobiculati | North America |
| Lactarius deliciosus# | (L.) Gray | 1821 | PiperitesDeliciosi/Dapetes | Northern hemisphere, Australia |
| Lactarius densus | (R. Heim) P.M. Kirk | 2015 | | |
| Lactarius denudatus | (Calonge & J.M. Vidal) P.M. Kirk | 2015 | | |
| Lactarius depressus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius desideratus | Verbeken & Stubbe | 2008 | | Cameroon |
| Lactarius desjardinii | (Thiers) P.M. Kirk | 2015 | | |
| Lactarius deterrimus# | Gröger | 1968 | PiperitesDeliciosi/Dapetes | Europe |
| Lactarius dewevrei | Douanla-Meli | 2009 | | Cameroon |
| Lactarius dhakurianus | K. Das, Basso & J.R. Sharma | 2005 | | |
| Lactarius dilutisalmoneus | X.H. Wang, S.F. Shi & T. Bau | 2018 | | |
| Lactarius dirkii | P. Uniyal, K. Das, Baghela & R.P. Bhatt | 2016 | | |
| Lactarius dispersus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius dolichocaulis | (Pegler) Verbeken & U.Eberhardt | 2004 | Plinthogali | Zambia |
| Lactarius dombangensis | Verbeken & Van de Putte | 2016 | | |
| Lactarius drassinus | K. Verma, P. Uniyal, Y.P. Sharma & Mehmood | 2021 | | |
| Lactarius dryadophilus | Kühner | 1975 | PiperitesGlutinosiAspideini | Europe |
| Lactarius dunfordii | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius duplicatus | A.H.Sm. | 1960 | RussulariaRussularia | Europe, North America |
| Lactarius eburneus | Thiers | 1957 | | North America |
| Lactarius echinellus | Verbeken & Stubbe | 2014 | | Sri Lanka |
| Lactarius echinosporus | Z. Schaef. | 1960 | | |
| Lactarius echinus | Verbeken & Stubbe | 2014 | | Sri Lanka |
| Lactarius elaioviscidus | K. Das & Verbeken | 2011 | | |
| Lactarius ermineus | K. Das & Verbeken | 2011 | | |
| Lactarius erubescens | Verbeken & E. Horak | 2000 | | |
| Lactarius eucalypti | O.K.Mill. & R.N. Hilton | 1987 | | Australia |
| Lactarius evosmus | Kühner & Romagn. | 1954 | PiperitesZonariiZonarii | Europe |
| Lactarius exilis | X.H. Wang | 2019 | | |
| Lactarius falcatus | Verbeken&VandePutte | 2014 | | Sri Lanka |
| Lactarius fallax# | A.H.Sm. & Hesler | 1962 | PlinthogalusPlinthogalus | |
| Lactarius favrei | H. Jahn | 1982) | | |
| Lactarius fennoscandicus | Verbeken & Vesterh. | 1998 | PiperitesDeliciosi/Dapetes | Europe |
| Lactarius ferruginascens | K. Das & Verbeken | 2017 | | |
| Lactarius ferrugineifolius | Stubbe & Verbeken | 2008 | Plinthogali | Malaysia |
| Lactarius ferrugineus | Pegler | 1979 | | |
| Lactarius firmus | Pacioni & Lalli | 1989 | | |
| Lactarius flaviaquosus | X.H. Wang | 2019 | | |
| Lactarius flavidulus | S. Imai | 1935 | | |
| Lactarius flavidus | Boud. | 1887 | PiperitesUvidiAspideini | Europe |
| Lactarius flavigalactus | Verbeken & K. Das | 2016 | | |
| Lactarius flavoaspideus | Kytöv. | 2009 | | Finland |
| Lactarius flavofuscus | Herp. | 1912 | | |
| Lactarius flavopalustris | Kytöv. | 2009 | | Finland |
| Lactarius flavorosescens | Stubbe & Verbeken | 2008 | Plinthogali | Borneo, Malaysia |
| Lactarius flexuosus | (Pers.) Gray | 1821 | PiperitesGlutinosiPyrogalini | Europe |
| Lactarius flocculosiceps | Burl. | 1945 | | |
| Lactarius floridanus | Beardslee & Burl. | 1940 | | North America |
| Lactarius floridus | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius fluens | Boud. | 1899 | PiperitesGlutinosiPyrogalini | Europe |
| Lactarius foetidus | Peck | 1902 | | |
| Lactarius formosus | H.T. Le & Verbeken | 2007 | | |
| Lactarius fraxineus | Romagn. | 1964 | | |
| Lactarius friabilis | H.T. Le & D. Stubbe | 2007 | | |
| Lactarius frustratus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius fulgens | R. Heim | 1938 | | |
| Lactarius fuliginellus | A.H.Sm. & Hesler | 1962 | | North America |
| Lactarius fuliginosus# | (Krapf) Fr. | 1838 | PlinthogalusPlinthogali | Europe |
| Lactarius fulvescens | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius fulvihirtipes | X.H. Wang | 2018 | | |
| Lactarius fulvissimus# | Romagn. | 1954 | RussulariaRussularia | Europe |
| Lactarius fulvus | Stubbe & Verbeken | 2008 | Plinthogali | Malaysia |
| Lactarius fumeacolor | Burl. | 1945 | | North America |
| Lactarius fumosibrunneus | A.H. Sm. & Hesler | 1962 | | |
| Lactarius fumosus# | Peck | 1872 | PlinthogalusFumosi | North America |
| Lactarius furfuraceus | X.H. Wang | 2018 | | |
| Lactarius fuscomaculatus | Wisitr. & Verbeken | 2015 | | |
| Lactarius fusco-olivaceus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius fuscozonarius | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius gardneri | (Zeller & C.W. Dodge) Pierotti | 2015 | | |
| Lactarius gerardii | Peck | 1873 | | |
| Lactarius giennensis | (Mor.-Arr., J. Gómez & Calonge) Pierotti | 2015 | | |
| Lactarius gigasporus | Singer | 1983 | | |
| Lactarius glabrigracilis | Wisitr. & Nuytinck | 2014 | | |
| Lactarius glabripes | A.H. Sm. | 1933 | | |
| Lactarius glutigriseus | V.L. Wells & Kempton | 1974 | | North America |
| Lactarius glutininitens | Har. Takah. | 2001 | | |
| Lactarius glutinosus | Sumst. | 1941 | | North America |
| Lactarius glyciosmus# | (Fr.) Fr. | 1838 | PiperitesColoratiColoratini | Europe, North America |
| Lactarius gossypinus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius gracilentus | A.H. Sm. & Hesler | 1962 | | |
| Lactarius gracilis | Hongo | 1957 | | |
| Lactarius grammoloma | E.H.L. Krause | 1928 | | |
| Lactarius grandisporus | Lj.N. Vassiljeva | 1950 | | |
| Lactarius griseogalus | R. Heim | 1967 | | |
| Lactarius griseus | Peck | 1873 | | North America |
| Lactarius groenlandicus | Terk. | 1956 | | |
| Lactarius guanacastensis | Singer | 1983 | | |
| Lactarius guangdongensis | X.H. Wang, Y. Han & C.Z. Liang | 2019 | | |
| Lactarius guttisporus | Verbeken & E. Horak | 2000 | | |
| Lactarius hatsudake | Nobuj. Tanaka | 1890 | | Asia |
| Lactarius haugiae | Bandala, Montoya & A. Ramos | 2016 | | |
| Lactarius helodes | A. Favre & Guichard | 2002 | | |
| Lactarius helvus# | (Fr.) Fr. | 1838 | PiperitesColoratiColoratini | Europe, North America |
| Lactarius hengduanensis | X.H. Wang | 2016 | | |
| Lactarius hepaticus# | Plowr. | 1905 | RussulariaRussularia | Europe, North America |
| Lactarius herrerae | Montoya, Bandala & Garay-Serr. | 2014 | | |
| Lactarius hibbardae | Peck | 1908 | | North America |
| Lactarius highlandensis | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius himalayanus | Rawla & Sarwal | 1983 | | |
| Lactarius hirtipes | J.Z. Ying | 1991 | | |
| Lactarius hispidulus | R. Heim | 1955 | | |
| Lactarius horakii | Nuytinck & Verbeken | 2006 | Gerardii | Indonesia |
| Lactarius hortensis | Velen. | 1920 | | |
| Lactarius hradecensis | Z. Schaef. | 1948 | | |
| Lactarius hrdovensis | Škubla | 2006 | | |
| Lactarius hygrophoroides | Berk. & M.A. Curtis | 1859 | | |
| Lactarius hyphoinflatus | R.W. Rayner | 2003 | | |
| Lactarius hysginoides | Korhonen & T. Ulvinen | 1985 | PiperitesGlutinosiTrivialini | Europe |
| Lactarius hysginus | (Fr.) Fr. | 1838 | PiperitesGlutinosiPallidini | Europe, North America |
| Lactarius ilicis | Sarnari | 1993 | | |
| Lactarius illyricus | Piltaver | 1992 | | Slovenia |
| Lactarius imbricatus | M.X.Zhou & H.A.Wen | 2008 | | Tibet |
| Lactarius imperceptus | Beardslee & Burl. | 1940 | | North America |
| Lactarius inamyloideus | Verbeken & E. Horak | 2000 | | |
| Lactarius incarnatozonatus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius incarnatus | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius inconspicuus | H.T. Le & F. Hampe | 2015 | | |
| Lactarius incrustatus | X.H. Wang | 2019 | | |
| Lactarius indigo# | (Schwein.) Fr. | 1838 | Lactarius | North America, Asia, Central America |
| Lactarius indoaquosus | K. Das & Verbeken | 2017 | | |
| Lactarius indochrysorrheus | K. Das & Verbeken | 2015 | | |
| Lactarius indoscrobiculatus | K. Das & I. Bera | 2020 | | |
| Lactarius indozonarius | Uniyal, K. Das & Nuytinck | 2018 | | |
| Lactarius inquinatus | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius intonsus | Verbeken & E. Horak | 2000 | | |
| Lactarius irregularis | A. Blytt | 1905 | | |
| Lactarius isabellinus | Burl. | 1907 | | |
| Lactarius javanicus | Verbeken & E. Horak | 2001 | | |
| Lactarius jecorinus | (Fr.) Fr. | 1838 | | |
| Lactarius josserandii | (Malençon) J.M. Vidal & P. Alvarado | 2019 | | |
| Lactarius kabansus | Pegler & Piearce | 1980 | | Zambia |
| Lactarius kalospermus | (Beeli) Verbeken & Walleyn | 1996 | | |
| Lactarius kauffmanii | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius keralensis | V.A. Farook & Manim. | 2016 | | |
| Lactarius kesiyae | Verbeken & K.D. Hyde | 20195 | | |
| Lactarius kuehneri | Joss. | 1952 | | |
| Lactarius kumaonensis | Uniyal, K. Das, R.P. Bhatt & U. Singh | 2017 | | |
| Lactarius laccarioides | Wisitr. & Verbeken | 2014 | | |
| Lactarius lachungensis | Verbeken & Van de Putte | 2016 | | |
| Lactarius lactarioides | (Zeller) P.M. Kirk | 2015 | | |
| Lactarius lacteolutescens | Montoya, Bandala & G. Moreno | 1998 | | |
| Lactarius lacteovirescens | Verbeken & E. Horak | 2000 | | |
| Lactarius lacunarum | (Romagn.) ex Hora | 1960 | RussulariaRussularia | Europe |
| Lactarius lanceolatus | O.K.Mill. & Laursen | 1973 | RussulariaRussularia | Europe, North America |
| Lactarius lanuginosus | Burl. | 1908 | | North America |
| Lactarius lapponicus | Harmaja | 1976 | | |
| Lactarius laricinus | Singer | 1989 | | |
| Lactarius lazulinus | D. Stubbe, Verbeken & Watling | 2007 | | |
| Lactarius lentus | Coker | 1918 | | North America |
| Lactarius leonis | Kytöv. | 1984 | PiperitesZonariiScrobiculati | Europe |
| Lactarius lepidotus | Hesler & A.H.Sm. | 1979 | | Europe, North America |
| Lactarius lignicola | W.F. Chiu | 1945 | | |
| Lactarius lignyotellus | A.H.Sm. & Hesler | 1962 | | North America |
| Lactarius lignyotus | Fr. | 1855 | PlinthogalusPlinthogali | Europe, North America |
| Lactarius lilacinus | (Lasch) Fr. | 1838 | PiperitesColoratiColoratini | Europe |
| Lactarius liliputianus | Verbeken & E. Horak | 2000 | | |
| Lactarius limacinus | Beardslee & Burl. | 1940 | | North America |
| Lactarius limacium | Velen. | 1920 | | |
| Lactarius listeri | Krombh. ex Sacc. | 1915 | | |
| Lactarius lividorubescens | (Batsch) Burl. | 1908 | | |
| Lactarius louisii | Homola | 1976 | | North America |
| Lactarius luculentus | Burl. | 1936 | | North America |
| Lactarius luridus | (Pers.) Gray | 1821 | PiperitesUvidiUvidini | Europe |
| Lactarius luteocanus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius lutescens | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius luteus | A. Blytt | 1905 | | |
| Lactarius mackinawensis | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius maculatipes | Burl. | 1942 | | North America |
| Lactarius maculatus | Peck | 1888 | | North America |
| Lactarius maculosus | Murrill | 1916 | | North America |
| Lactarius mairei | Malençon | 1939 | PiperitesPiperites | Europe |
| Lactarius maitlyensis | K. Das, J.R. Sharma & Verbeken | 2003 | | |
| Lactarius maliodorus | Boud. | 1900 | | |
| Lactarius mammosus | Fr. | 1838 | PiperitesColoratiColoratini | Europe |
| Lactarius manzanitae | Methven | 1985 | | North America |
| Lactarius marasmioides | X.H. Wang | 2018 | | |
| Lactarius marci-panis | Velen. | 1920 | | |
| Lactarius maruiaensis | McNabb | 1971 | | |
| Lactarius marylandicus | A.H. Sm. & Hesler | 1962 | | |
| Lactarius mayawatianus | K. Das & J.R. Sharma | 2003 | | |
| Lactarius mea | Grgur. | 1997 | | Australia |
| Lactarius mediterraneensis | Llistos. & Bellù | 1996 | | |
| Lactarius megalopterus | Beenken & Sainge | 2016 | | |
| Lactarius melanodermus | R. Heim & Gooss.-Font. | 1955 | | |
| Lactarius melanogalus | R. Heim | 1955 | | |
| Lactarius mexicanus | A. Kong & Estrada | 1994 | | |
| Lactarius microbuccinatus | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius microsporus | Sosin | 1960 | | |
| Lactarius midlandensis | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius miniatescens | Verbeken & Van Rooij | 2003 | | |
| Lactarius miniatosporus | Montoya & Bandala | 2004 | | |
| Lactarius minimus | W.G. Sm. | 1873 | | |
| Lactarius minusculus | Burl. | 1907 | | North America |
| Lactarius mirabilis | D. Stubbe, Verbeken & Watling | 2007 | | Europe, North America |
| Lactarius mirus | X.H. Wang, W.Q. Qin, Z.H. Chen, W.Q. Deng & Zhen Wang | 2021 | | |
| Lactarius mitratus | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius montanus | (Hesler & A.H.Sm.) Montoya & Bandala | 2003 | | |
| Lactarius montoyae | K. Das & J.R. Sharma | 2004 | | |
| Lactarius moravicus | Z. Schaef. | 1979 | | |
| Lactarius moschatus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius moseri | Harmaja | 1985 | | |
| Lactarius mucidus | Burl. | 1908 | | North America |
| Lactarius mukteswaricus | K. Das, J.R. Sharma & Montoya | 2004 | | |
| Lactarius muscicola | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius muscosus | Velen. | 1920 | | |
| Lactarius musteus# | Fr. | 1838 | PiperitesGlutinosiPallidini | Europe |
| Lactarius mutabilis | Peck | 1890 | | North America |
| Lactarius nancyae | Hesler & A.H. Sm. | 1979 | | |
| Lactarius nanus | J.Favre | 1955 | PiperitesGlutinosiTrivialini | Europe |
| Lactarius necator | (Bull.) Pers. | 1800 | | |
| Lactarius neglectus | X.H. Wang | 2018 | | |
| Lactarius neotabidus | A.H.Sm. | 1983 | | North America |
| Lactarius neuhoffii | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius nigricans | G.S. Wang & L.H. Qiu | 2018 | | |
| Lactarius nigroviolascens | G.F. Atk. | 1918 | | |
| Lactarius nimkeae | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius nitidus | Burl. | 1907 | | |
| Lactarius nodulisporus | Uniyal, K. Das & R.P. Bhatt | 2018 | | |
| Lactarius nonlactifluus | Murrill | 1938 | | |
| Lactarius novae-zelandiae | McNabb | 1971 | | |
| Lactarius nudus | R. Heim | 1955 | | |
| Lactarius obnubiloides | Thiers | 1957 | | |
| Lactarius obscuratus# | Romagn. | 1974 | RussulariaTabidi | Europe, North America |
| Lactarius occidentalis | A.H.Sm. | 1960 | | North America |
| Lactarius odoratus | Velen. | 1920 | | |
| Lactarius oedohyphosus | Idzerda & Noordel. | 1997 | | |
| Lactarius ogasawarashimensis | S. Ito & S. Imai | 1940 | | |
| Lactarius olivaceobrunneus | Hesler & A.H. Sm. | 1979 | | North America |
| Lactarius olivaceofuscus | X.H. Wang | 2021 | | |
| Lactarius olivaceoglutinus | K. Das & Verbeken | 2015 | | |
| Lactarius olivaceopallidus | P. Uniyal | 2019 | | |
| Lactarius olivaceorimosellus | X.H. Wang, S.F. Shi & T. Bau | 2018 | | |
| Lactarius olivaceoumbrinus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius olivinus | Kytöv. | 1984 | PiperitesZonariiScrobiculati | Europe |
| Lactarius olympianus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius omeiensis | W.F. Chiu | 1945 | | |
| Lactarius omphaliiformis | Romagn. | 1974 | RussulariaTabidi | Europe, South America |
| Lactarius oomsisiensis | Verbeken & Halling | 2002 | | |
| Lactarius orientaliquietus | X.H. Wang | 2018 | | |
| Lactarius orientalis | (Verbeken) Verbeken | 2000 | | |
| Lactarius orientitorminosus | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius pallescens | Hesler & A.H.Sm. | 1979 | TristesViolaceo-Maculati | North America |
| Lactarius pallidiolivaceus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius pallidior | Stubbe & Verbeken | 2008 | Plinthogali | Malaysia |
| Lactarius pallidizonatus | X.H. Wang | 2017 | | |
| Lactarius pallidomarginatus | Barge & C.L.Cripps | 2016 | | North America |
| Lactarius pallido-ochraceus | X.H. Wang | 2017 | | |
| Lactarius pallidozonarius | G.J. Li & W.F. Lin | 2021 | | |
| Lactarius pallidus# | Pers. | 1797 | PiperitesGlutinosiPallidini | Europe |
| Lactarius paludinellus | Peck | 1885 | | North America |
| Lactarius pandani | R. Heim | 1938 | | |
| Lactarius papillatus | Stubbe & Verbeken | 2008 | Plinthogali | Malaysia |
| Lactarius paradoxus | Beardslee & Burl. | 1940 | Lactarius | North America |
| Lactarius parallelus | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius parvulus | Murrill | 1940 | | North America |
| Lactarius pasohensis | Wisitr. & D. Stubbe | 2014 | | |
| Lactarius paucifluus | Murrill | 1948 | | |
| Lactarius paulus | P.M. Kirk | 2015 | | |
| Lactarius payettensis | A.H.Sm. | 1960 | | North America |
| Lactarius peckii | Burl. | 1908 | | North America |
| Lactarius pectinatus | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius pellicularis | R. Heim | 1955 | | |
| Lactarius pellucidus | Gooss.-Font. & R. Heim | 1955 | | |
| Lactarius pennulatus | Verbeken & E. Horak | 2000 | | |
| Lactarius perconicus | Verbeken & E. Horak | 2000 | | |
| Lactarius perparvus | Wisitr. & F. Hampe | 2014 | | |
| Lactarius pervelutinus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius picinus | Fr. | 1838 | PlinthogalusPlinthogali | Europe |
| Lactarius pilatii | Z.Schaef. | 1968 | PiperitesGlutinosiPyrogalini | Europe |
| Lactarius pinastri | Romagn. | 1980 | | |
| Lactarius pinckneyensis | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius pinicola | Smotl. ex Z. Schaef. | 1970 | | |
| Lactarius piniolens | Epinat & Kizlik | 1997 | | |
| Lactarius planus | Umemura | 1923 | | |
| Lactarius pleuromacrocystidiatus | Uniyal, K. Das & R.P. Bhatt | 2019 | | |
| Lactarius plinthogalus | (J. Otto) Burl. | 1908 | | |
| Lactarius plumbeus | (Bull.) Gray | 1821 | | |
| Lactarius pohangensis | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius politus | Wisitr. & K.D. Hyde | 2015 | | |
| Lactarius pomiolens | Verbeken & Stubbe | 2014 | | Sri Lanka |
| Lactarius populicola | J.M. Vidal, Konstantin., Setkos & Slavova | 2019 | | |
| Lactarius porniniae | Rolland | 1889 | PiperitesZonariiZonarii | Europe |
| Lactarius praegnantissimus | (Paulet) Bataille | 1908 | | |
| Lactarius praeserifluus | Murrill | 1938 | | |
| Lactarius praeviscidus | Murrill | 1943 | | |
| Lactarius praezonatus | Murrill | 1943 | | North America |
| Lactarius proximellus | Beardslee & Burl. | 1940 | | North America |
| Lactarius psammicola | A.H.Sm. | 1941 | | North America |
| Lactarius pseudoaffinis | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius pseudoaspideus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius pseudodeceptivus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius pseudodelicatus | A.H.Sm. | 1960 | | North America |
| Lactarius pseudodeliciosus | Beardslee & Burl. | 1940 | | North America |
| Lactarius pseudofallax | A.H. Sm. & Hesler | 1962 | | |
| Lactarius pseudoflexuosus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius pseudofragilis | X.H. Wang | 2017 | | |
| Lactarius pseudofuliginosus | A.H. Sm. & Hesler | 1962 | | |
| Lactarius pseudogerardii | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius pseudohatsudake | X.H. Wang | 2016 | | |
| Lactarius pseudolignyotus | R. Heim | 1955 | | |
| Lactarius pseudomaculatus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius pseudomucidus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius pseudoscrobiculatus | Basso, Neville & Poumarat | 2001 | | |
| Lactarius pseudouvidus | Kühner | 1975 | PiperitesUvidiUvidini | Europe |
| Lactarius pterosporus | Romagn. | 1949 | PlinthogalusPlinthogali | Europe |
| Lactarius pubescens# | Fr. | 1838 | PiperitesPiperites | Europe, North America |
| Lactarius pudorinus | Verbeken & Bougher | 2002 | | |
| Lactarius pulchrispermus | Verbeken | 1996 | | |
| Lactarius pungens | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius puniceus | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius purgatorii | Singer | 1948 | | |
| Lactarius purpureobadius | Malençon ex Basso | 2009 | | Morocco |
| Lactarius purpureocastaneus | X.H. Wang | 2017 | | |
| Lactarius purpureoechinatus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius purpureus | R. Heim | 1966 | | |
| Lactarius pusillisporus | Verbeken | 1996 | | |
| Lactarius pusillus | Bres. | 1929 | | |
| Lactarius pyriodorus | K. Das & Verbeken | 2015 | | |
| Lactarius pyrogalus# | (Bull.) Fr. | 1838 | PiperitesGlutinosiPyrogalini | Europe, North America |
| Lactarius qinlingensis | X.H. Wang | 2018 | | |
| Lactarius quercuum | Singer | 1963 | | Bolivia |
| Lactarius quieticolor | Romagn. | 1958 | PiperitesDeliciosi/Dapetes | Europe |
| Lactarius quietus# | (Fr.) Fr. | 1838 | RussulariaRussularia | Europe, North America |
| Lactarius rajmahalensis | Hembrom, K. Das & A. Parihar | 2017 | | |
| Lactarius repraesentaneus# | Britzelm. | 1885 | PiperitesUvidiAspideini | Europe, North America |
| Lactarius resimus | (Fr.) Fr. | 1838 | PiperitesZonariiScrobiculati | Europe, North America |
| Lactarius resinosus | X.H. Wang | 2019 | | |
| Lactarius reticulatus | (Berk.) Singer | 1955 | | |
| Lactarius reticulisporus | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius rimosellus | Peck | 1906 | | North America |
| Lactarius riparius | Methven | 1985 | | North America |
| Lactarius robertianus | Bon | 1985 | | |
| Lactarius romagnesii | Bon | 1979 | PlinthogalusPlinthogali | Europe |
| Lactarius roseoligalus | X.H. Wang | 2019 | | |
| Lactarius roseoviolascens | (Lasch) Romell | 1924 | | |
| Lactarius rostratus | Heilm.-Claus. | 1998 | RussulariaOlentes | Europe |
| Lactarius rubidus# | (Hesler & A.H.Sm.) Methven | 1997 | | North America |
| Lactarius rubrilacteus# | Hesler & A.H.Sm. | 1979 | Lactarius | North America |
| Lactarius rubriviridis | Desjardin, Saylor & Thiers | 2003 | Dapetes | USA |
| Lactarius rubrobrunneus | H.T. Le & Nuytinck | 2015 | | |
| Lactarius rubrocinctus | Fr. | 1863 | RussulariaTabidi | Europe |
| Lactarius rubrocorrugatus | Wisitr. & Nuytinck | 2015 | RussulariaTabidi | Europe |
| Lactarius rubrozonatus | Lalli & Pacioni | 2003 | | |
| Lactarius rufulus# | Peck | 1907 | RussulariaThejogali | North America |
| Lactarius rufus# | (Scop.) Fr. | 1838 | PiperitesColoratiRufini | Europe, North America |
| Lactarius ruginosus | Romagn. | 1957 | PlinthogalusPlinthogali | Europe, North America |
| Lactarius rugosus | Velen. | 1920 | | |
| Lactarius rumongensis | Verbeken | 1996 | | |
| Lactarius russuliformis | (Beeli) Verbeken | 1996 | | |
| Lactarius rusticanus | (Scop.) Burl. | 1908 | | |
| Lactarius sakamotoi | S. Imai | 1935 | | |
| Lactarius salicis-herbaceae | Kühner | 1975 | PiperitesUvidiAspideini | Europe |
| Lactarius salicis-reticulatae | Kühner | 1975 | PiperitesUvidiAspideini | Europe, America |
| Lactarius salmoneus | Peck | 1898 | Lactarius | North America |
| Lactarius salmonicolor | R.Heim & Leclair | 1953 | Lactarius | Europe, North America |
| Lactarius sanguifluus | (Paulet) Fr. | 1838 | PiperitesDeliciosi/Dapetes | Europe |
| Lactarius sanguineovirescens | Fillion | 1989 | | |
| Lactarius sanjappae | K. Das, J.R. Sharma & Montoya | 2004 | | |
| Lactarius sanmiguelensis | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius saponaceus | Verbeken | 1996 | | |
| Lactarius sarthalanus | K. Verma, P. Uniyal, Y.P. Sharma & Mehmood | 2021 | | |
| Lactarius saturnisporus | Verbeken & Stubbe | 2014 | | Sri Lanka |
| Lactarius saylorii | (Thiers) P.M. Kirk | 2015 | | |
| Lactarius sciaphilus | Verbeken & C. Sharp | 2003 | | |
| Lactarius scoticus | Berk. & Broome | 1879 | PiperitesPiperites | Europe |
| Lactarius scrobiculatus | (Scop.) Fr. | 1838 | PiperitesZonariiScrobiculati | Europe, North America |
| Lactarius semisanguifluus | R.Heim & Leclair | 1950 | PiperitesDeliciosi/Dapetes | Europe |
| Lactarius serifluus# | (DC.) Fr. | 1838 | RussulariaOlentes | Europe |
| Lactarius shiwalikensis | J. Kumar & N.S. Atri | 2021 | | |
| Lactarius shoreae | Stubbe & Verbeken | 2014 | | Sri Lanka |
| Lactarius siccus | Velen. | 1920 | | |
| Lactarius sikkimensis | Verbeken & K. Das | 2016 | | |
| Lactarius silviae | Pierotti | 2015 | | |
| Lactarius similis | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius similissimus | A.H. Sm. & Hesler | 1962 | | |
| Lactarius singeri | Uniyal, K. Das & R.P. Bhatt | 2018 | | |
| Lactarius sinozonarius | X.H. Wang | 2017 | | |
| Lactarius smithii | Montoya & Bandala | 2004 | | |
| Lactarius soehneri | (Zeller & C.W. Dodge) J.M. Vidal & G. Moreno | 2019 | | |
| Lactarius southworthiae | J.L. Frank | 2014 | | North America |
| Lactarius spadiceus | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius sphagneti | (Fr.) Neuhoff | 1956 | RussulariaRussularia | Europe |
| Lactarius spinosporus | X.Y. Sang & L. Fan | 2016 | | |
| Lactarius spinosulus# | Quél. | 1880 | PiperitesPiperites | Europe |
| Lactarius splendens | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius squamulosus | Z.S. Bi & T.H. Li | 1987 | | |
| Lactarius steffenii | Rick | 1930 | | |
| Lactarius stephensii | (Berk.) Verbeken & Walleyn | 2004 | | |
| Lactarius striatus | R. Heim | 1938 | | |
| Lactarius strigosipes | Montoya & Bandala | 2008 | | |
| Lactarius strigosus | Verbeken & E. Horak | 2000 | | |
| Lactarius stubbei | Wisitr. & Verbeken | 2014 | | |
| Lactarius subalpinus | A. Blytt | 1905 | | |
| Lactarius subamarus | Verbeken | 1996 | | |
| Lactarius subatlanticus | X.H. Wang | 2018 | | |
| Lactarius subaustralis | Hesler | 1960 | | |
| Lactarius subbaliophaeus | Maba & Yorou | 2014 | Nigrescentes | Togo, Africa |
| Lactarius subborealis | A.H. Sm. & Hesler | 1962 | | |
| Lactarius subbrevipes | X.H. Wang | 2017 | | |
| Lactarius subcircellatus | Kühner | 1975 | PiperitesGlutinosiTrivialini | Europe |
| Lactarius subdulcis# | (Pers.) Gray | 1821 | RussulariaRussularia | Europe |
| Lactarius subflammeus# | Hesler & A.H.Sm. | 1979 | RussulariaRussularia | North America |
| Lactarius subgiennensis | Loizides, J.M. Vidal & P. Alvarado | 2019 | | |
| Lactarius subgracilis | X.H. Wang | 2018 | | |
| Lactarius subhirtipes | X.H. Wang | 2018 | | |
| Lactarius subindigo | Verbeken & E. Horak | 2000 | | India, China, Papua New Guinea, Japan? |
| Lactarius subisabellinus | Murrill | 1948 | | North America |
| Lactarius sublaccarioides | Wisitr. & Verbeken | 2014 | | |
| Lactarius sublacustris | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius sublatus | (Murrill) Murrill | 1944 | | |
| Lactarius subolivaceus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius subomphaliformis | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius subpaludosus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius subpalustris | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius subplinthogalus | Coker | 1918 | | North America |
| Lactarius subpurpureus | Peck | 1878 | Lactarius | North America |
| Lactarius subresimus | O.K. Mill. | 1982 | | |
| Lactarius subruginosus | J. Blum ex Bon | 1985 | | |
| Lactarius subserifluus | Longyear | 1902 | | North America |
| Lactarius substriatus | A.H.Sm. | 1960 | | North America |
| Lactarius subtestaceus | Muriill | 1939 | | North America |
| Lactarius subtorminosus | Coker | 1918 | | North America |
| Lactarius subumbonatus | Lindgr. | 1845 | RussulariaOlentes | Europe |
| Lactarius subumbrinus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius subvelutinus | Peck | 1904 | | North America |
| Lactarius subvernalis | Hesler & A.H.Sm. | 1960 | | North America |
| Lactarius subvillosus | Hesler & A.H.Sm. | 1979 | | |
| Lactarius subviscidus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius subzonarius | Hongo | 1957 | | |
| Lactarius sulcatulus | Verbeken | 1996 | | |
| Lactarius sulcatus | Verbeken & Walleyn | 2000 | | |
| Lactarius sulphosmus | G.J. Li & R.L. Zhao | 2018 | | |
| Lactarius sulphurescens | Verbeken & E. Horak | 2001 | | |
| Lactarius sumstinei | Peck | 1905 | | North America |
| Lactarius syringinus | Z.Schaef. | 1956 | PiperitesGlutinosiPyrogalini | Europe |
| Lactarius tabidus# | Fr. | 1838 | RussulariaTabidi | Europe |
| Lactarius taedae | Silva-Filho, Sulzbacher & Wartchow | 2018 | | |
| Lactarius tangerinus | H.T. Le & De Crop | 2015 | | |
| Lactarius tatrorum | Z. Schaef. | 1958 | | |
| Lactarius tawai | McNabb | 1971 | | |
| Lactarius telinolens | (Bellardi) Sacc. & Trotter | 1912 | | |
| Lactarius tenellus | Verbeken & Walleyn | 2000 | | |
| Lactarius tephropeplis | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius terenopus | Romagn. | 1957 | | |
| Lactarius tesquorum | Malençon | 1979 | | Morocco, Mediterranean Europe |
| Lactarius texensis | (A.H.Sm. & Hesler) Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius textus | (J.W. Cribb) P.M. Kirk | 2015 | | |
| Lactarius thakalorum | Bills & Cotter | 1989 | | |
| Lactarius theissenii | Murr | 1918 | | |
| Lactarius thiersii | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius thindii | P. Uniyal, K. Das & Nuytinck | 2018 | | |
| Lactarius tithymalinus | (Scop.) Fr. | 1838 | | |
| Lactarius tomentosomarginatus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius torminosulus | Knudsen & T.Borgen | 1996 | PiperitesPiperites | Europe |
| Lactarius torminosus# | (Schaeff.) Pers. | 1797 | PiperitesPiperites | Europe, North America |
| Lactarius tottoriensis | Matsuura | 1934 | | |
| Lactarius trichodermoides | Montoya, Bandala & M. Herrera | 2018 | | |
| Lactarius tricolor | Massee | 1908 | | |
| Lactarius trivialis | (Fr.) Fr. | 1838 | PiperitesGlutinosiTrivialini | Europe, North America |
| Lactarius tuberculatus | X.H. Wang | 2018 | | |
| Lactarius tuomikoskii | Kytöv. | 1984 | PiperitesZonariiScrobiculati | Europe |
| Lactarius turpis# | (Weinm.) Fr. | 1838 | PiperitesAtroviridi | Europe, North America |
| Lactarius umbrinopapillatus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius umerensis | McNabb | 1971 | | |
| Lactarius undulatus | Verbeken | 1996 | | |
| Lactarius unicolor | Gooss.-Font. & R. Heim | 1955 | | |
| Lactarius ustulatus | H. Lee, Wisitr. & Y.W. Lim | 2019 | | |
| Lactarius uvidus | (Fr.) Fr. | 1838 | PiperitesUvidiUvidini | Europe, North Africa, North America |
| Lactarius variegatus | (Thiers) P.M. Kirk | 2015 | | |
| Lactarius verbekenae | K. Das, J.R. Sharma & Montoya | 2004 | | |
| Lactarius verecundus | Stubbe & Verbeken | 2008 | Plinthogali | Malaysia |
| Lactarius verrucosporus | G.S. Wang & L.H. Qiu | 2018 | | |
| Lactarius vesterholtii | K. Das & D. Chakr. | 2015 | | |
| Lactarius vestipes | Velen. | 1920 | | |
| Lactarius vietus# | (Fr.) Fr. | 1838 | PiperitesGlutinosiPyrogalini | Europe, North America |
| Lactarius villosozonatus | G.F. Atk. | 1918 | | |
| Lactarius villosus | Clem. | 1896 | | North America |
| Lactarius vinaceopallidus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius vinaceorufescens | A.H.Sm. | 1960 | | North America |
| Lactarius vinaceosporus | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius violaceomarginatus | Lj.N. Vassiljeva | 1950 | | |
| Lactarius violascens | (J.Otto) Fr. | 1839 | PiperitesUvidiUvidini | Europe |
| Lactarius virgatisporus | Verbeken & E. Horak | 2000 | | |
| Lactarius viridinigrellus | K. Das, I. Bera & Uniyal | 2019 | | |
| Lactarius viscosus | Velen. | 1920 | | |
| Lactarius vividus | X.H. Wang, Nuytinck & Verbeken | 2015 | | |
| Lactarius volkertii | Murrill | 1915 | | |
| Lactarius walleynii | Verbeken & E. Horak | 1999 | | |
| Lactarius waltersii | Hesler & A.H. Sm. | 1979 | | |
| Lactarius wenquanensis | Y. Wang & Z.X. Xie | 1984 | | |
| Lactarius westii | Murrill | 1940 | | North America |
| Lactarius xanthogalactus# | Peck | 1907 | | North America |
| Lactarius xanthogalus | Verbeken & E. Horak | 2000 | | |
| Lactarius xanthydrorheus | Singer | 1945 | | North America |
| Lactarius yazooensis | Hesler & A.H.Sm. | 1979 | | North America |
| Lactarius yumthangensis | K. Das & Verbeken | 2015 | | |
| Lactarius zebrisporus | Verbeken & E. Horak | 2001 | | |
| Lactarius zonarioides | Kühner & Romagn. | 1954 | PiperitesZonariiZonarii | Europe |
| Lactarius zonarius | (Bull.) Fr. | 1838 | PiperitesZonariiZonarii | Europe, North America |
| Lactarius zugazae | G. Moreno, Montoya, Bandala & Heykoop | 2001 | | |

## English names

* L. affinis: Kindred milkcap
* L. alnicola: Golden milkcap
* L. argillaceifolius: Vulgar milkcap
* L. aspideus: Bright yellow milkcap
* L. aurantiacus: Orange milkcap
* L. blennius: Beech milkcap
* L. camphoratus: Curry milkcap
* L. chrysorrheus: Yellowdrop milkcap
* L. deliciosus: Saffron milkcap
* L. deterrimus: False saffron milkcap
* L. fallax: Velvety milk cap
* L. fragilis: Candy milkcap
* L. fuliginosus: Sooty milkcap
* L. fulvissimus: Tawny milkcap
* L. fumosus: Smoky milkcap
* L. glyciosmus: Coconut milkcap
* L. helvus: Fenugreek milkcap
* L. hepaticus: Liver milkcap
* L. indigo: Indigo milkcap
* L. musteus: Pine milkcap
* L. obscuratus: Alder milkcap
* L. pallidus: Pale milkcap
* L. pyrogalus: Fiery milkcap
* L. pubescens: Bearded milkcap
* L. quietus: Oakbug milkcap
* L. representaneus: Northern bearded milkcap, northern milkcap, purple-staining milkcap, yellow-bearded milkcap
* L. rubidus: Candy milkcap
* L. rubrilacteus: Bleeding milkcap
* L. rufulus: Rufus (rufous) Candy milkcap
* L. rufus: Rufous milkcap
* L. serifluus: Watery milkcap
* L. spinosulus: Lilacscale milkcap
* L. subdulcis: Mild milkcap
* L. subflammeus: Orange milkcap
* L. tabidus: Birch milkcap
* L. torminosus: Woolly milkcap
* L. turpis: Ugly milkcap
* L. vietus: Grey milkcap
* L. xanthogalactus: Pepper milkcap