(Hermano) León (1871 - 1955)
(Léon Marie Jospeh) Gustave Nicolas (1879 - 1955)
? Karl Hermann Leonhard 1879-x ( - )
A. A. P. Leonardia (1975 - )
A. Leonard (col. 1993 - )
A. M. Leontjev (col. 1928 - )
A. Ponce de Leon (1887 - 1961)
A. Ponce de León y Aymé (1887 - 1961)
A. Ruiz de León (col. 1998 - )
Aguirre León, Ernesto (1951 - )
Al. Léonard (col. 1957 - 1959)
Alain, (Brother), Acuña Galé, Julian Baldomero, Leon, Frère (Brother) Joseph Sylvestre Sauget & Muñiz (Dr.) (col. 1950 - )
Alcorn, John Leonard (1937 - )
Alec Leonard Bull (fl. 1988 - )
Alfredo Amiel Pagandían Leonardía; A. Leonardia (1975 - )
Alma Leonora Holland (1892 - 1974)
Alphonse Marie Leon Legue (1841 - 1920)
Antonio Ponce de Leon y Ayme (1887 - 1961)
Arboleda R., Lupo Léon (col. 1948 - )
Archila Morales, Fredy Leonel (fl. 2000 - )
Armen Leonovich Takhtajan (1910 - 2009)
Arnould, Leon (fl. 1893 - )
Arthur Michael Leonhard Schüssler; Arthur Schüssler (1966 - )
Aubert, Pierre-Léonce (fl. 1873 - )
Augusto Napoleone Berlese (1864 - 1903)
Averyanov, Leonid Vladimirovich (1955 - )
Azevedo Penna, Leonam de (1903 - 1979)
B. L. León (fl. 2006 - )
B. León (1957 - )
Baksay, Leona (1915 - )
Bardunov, Leonid Vladimirovich (1932 - )
Barron, Leonard ( - )
Barth, Fernand-Léon (1874 - )
Baumann, Constantin Auguste Napoleon (1804 - 1884)
Baumann, Emile Napoleon (1835 - 1910)
Benny, Gerald Leonard (1942 - )
Berlese, Augusto Napoleone (1864 - 1903)
Besnou, Léon (1811 - )
Blanca León (1957 - )
Blanca Leonora Restrepo (fl. 1990 - 1999)
Blaschke, Eduard Leontjevitch (col. 1830 - )
Bockemuhk, Leonore (col. 1980 - 1989)
Bockemuhl, Leonore (fl. 1978 - )
Boltwood, Henry Leonidas (1831 - 1906)
Bonaparte, Prince Roland Napoléon (1858 - 1924)
Bonaparte, Roland Napoleon (1858 - 1924)
Boodle, Leonard Alfred (1865 - 1941)
Bordakov, Leonid Petrovich (1885 - 1940)
Borghi, Leonardo (fl. 2002 - )
Bossche, Leon van den ( - )
Boureau, Edouard Leon Francois (1913 - )
Boyer, Léon (fl. 1890 - )
Bracamontes Léon, Rosa Maria (1949 - )
Bradley, Leonard J. (col. 1930 - 1960)
Brass, Leonard John (1900 - 1971)
Bro. Alain, J. B. Acuña, Bro. J. S. S. León & & Muñiz (col. 1950 - )
Bro. León (1871 - 1955)
Bro. León (1871 - 1955)
Bro. León & Bro. Alain (1940 - )
Brother León (1871 - 1955)
Bruno Leonard (Leonhard) Florstrom (1879 - 1914)
Bull, Alec Leonard (fl. 1988 - )
Burlingame, Leonas Lancelot (1876 - 1950)
C. de Leon (col. 1984 - )
C. Leonis (col. 1898 - )
C. Leontovitch ( - )
Cabral, Elsa Leonor (1951 - )
Calixto Leon Gomez (fl. 1976 - )
Calmette, Leon Charles Albert (1863 - 1933)
Camici, Leontina (fl. 1948 - )
Carl Leonhardt (1902 - )
Carlier, Leon (1821 - 1901)
Castillon, Léon (fl. 1926 - )
Caum, Edward Leonard (1893 - 1952)
Charles Leonard Smith (1866 - 1923)
Chatton, Édouard [Pierre Léon] (1883 - 1947)
Chenault, Léon (1853 - 1930)
Chesley, Leon Carey (1909 - )
Chinthibidze, Leonida S. (1923 - )
Cienkowski, Leon Semenowitj (1822 - 1887)
Cirillo, Domenico Maria Leone (1739 - 1799)
Claude Henri Leon Sastre; Claude Sastre (1938 - )
Cléonique-Joseph (1886 - )
Cleonique-Joseph, Frère (1886 - )
Clerk, Leon le ( - )
Co, Leonardo ( - )
Co, Leonardo Legaspi (1953 - )
Cockayne, Leonard (1855 - 1934)
Cole, Leon Jacob (1877 - 1948)
Conill, Joseph Léon Émile (1872 - 1944)
Conill, Léon (1906 - )
Constantin Auguste Napoleon Baumann (1804 - 1884)
Coomans, Léon (1830 - 1896)
Corneille Leon Lambert Henri van Woerden (1903 - 1970)
Croizat, Leon Camille Marius (1894 - 1982)
Croizat, Leon Camille Marius & Hara, Hiroshi (fl. 1940 - )
Curto, Michael Leonard (1956 - )
Cusato, Leonor (1945 - )
Cyrillo, Domenico Maria Leone (1739 - 1799)
D'El Rei Souza, Maria Leonor (1955 - )
D'El Rei Souza, Maria Leonor (fl. 2002 - )
Damazio, Leonidas Botelho (1854 - 1922)
Deble, Leonardo Paz (fl. 2004 - )
Degrully, Leon (fl. 1887 - 1907)
Dekaprelevic, Leonard Leonardvic (1886 - )
Delarge, Léon Charles Albert (1914 - 1940)
Dieckman, Leonard (col. 1970 - 1972)
Diederich Franz Leonard von Schlechtendal; also as D. F. L. de Schlechtendal (1794 - 1866)
Diguet, Léon (fl. 1925 - )
Diquet, Leon (col. 1890 - )
Dirk Leonard Oskamp (1768 - )
Dobrozrakova, Taisiia Leonidovna (fl. 1927 - )
Domenico Maria Leone Cirillo (1739 - 1799)
Dommers, Johannes Leonardus (1870 - 1923)
Doncaster, Leonard (fl. 1910 - )
Doran, John Leonard (1914 - )
Doran, William Leonard (1893 - )
Doûmet, Paul-Napoléon (1834 - 1897)
Doûmet-Adanson, Paul-Napoléon (1834 - 1897)
Ducellier, Léon Octave (1878 - 1937)
Dufour, Jean-Marie Leon (1780 - 1865)
Dufour, Leon (Marie) (1862 - 1942)
Durando, Gaetano Leone (1811 - 1892)
Dutreuil de Rhins, Jules Léon (1846 - 1894)
E. Aguirre León (1951 - )
E. C. Leonard (1892 - 1968)
Eaton, Geoffrey Leonard ( - )
Edouard Leon Francois Boureau (1913 - )
Édouard Pierre Léon Chatton (1883 - 1947)
Edward Leonard Caum (1893 - 1952)
Einar Christian Leonard Naumann (1891 - 1934)
Ekman, Erik Leonard (1883 - 1931)
Eleonora Zakharovna Koval (1930 - )
Elroy Leon? (col. 1891 - )
Elsa Leonor Cabral (1951 - )
Emery Clarence Leonard (1892 - 1968)
Emil Leonhard Wilhelm Winckler (1824 - )
Emile Napoleon Baumann (1835 - 1910)
Erik Leonard Ekman (1883 - 1931)
Ernesto Aguirre Leon (1951 - )
Escritor, Leonicia (1913 - )
F. E. Leonard (1866 - 1922)
Faye, Léon ( - 1855)
Fea, Leonardo (1852 - 1903)
Felix, Leonardo P. (1958 - )
Fernand-Léon Barth (1874 - )
Ferrington, Leonard C. (fl. 1999 - )
Fishbein, Mark, Juárez-Jaimes, Verónica & Alvarado-Cárdenas, Leonardo O. (2008 - )
Florstrom, Bruno Leonard (Leonhard) (1879 - 1914)
Floyd Leonard Martin (1909 - )
Forman, Lewis Leonard (1929 - 1998)
Formiggini, Leone ( - )
Francini-Corti, Eleonora (1904 - )
Fredy Leonel Archila Morales (fl. 2000 - )
Freese, Leonard Roy (1906 - )
Frisbie, Leonard F. (fl. 1959 - )
Fuchs, Leonard (1501 - 1566)
G. Leonard (1927 - )
G. M. Leonard (1902 - )
Gabriel Eleonor Merlet de la Boulaye (1736 - 1807)
Gabrielian, Eleonora Tz. (1929 - )
Gaetano Leone Durando (1811 - 1892)
Gaume, Marie Leon Camille Raymond (1885 - 1964)
Gelert, Otto Carl Leonor (1862 - 1899)
Gelert, Otto Christian Leonor (1862 - 1899)
Genevier, Leon Gaston (1830 - 1880)
Genevieve Mannakee Leonard (1902 - )
Geoffrey Leonard Eaton ( - )
Georg-Leonhard Thorstenson (1851 - 1918)
George Leonard Staunton (1737 - 1801)
Gerald Leonard Benny (1942 - )
Gerhard, Wilhelm Christoph Leonhard (1780 - 1858)
Germaud, Léon ( - )
Gerth van Wijk, Hugo Leonardus (1849 - 1921)
Gilbert Leonidas Stout (1898 - 1963)
Glicenstein, Leon (fl. 1990 - )
Gomez, Calixto Leon (fl. 1976 - )
Gonçalves, Maria Leonor (1934 - 2004)
Gouas, Leon (fl. 1858 - )
Govorov, Leonid Ipatevich (1885 - 1941)
Grigoraki, Leon (fl. 1921 - )
Grodzinsky, Leon (1908 - )
Gubellini, Leonardo (1954 - )
Guignard, Jean-Louis-Leon (1852 - 1928)
Guy Leonard (1927 - )
H. León Tejera (1955 - )
Haan, Gunter Adelbert Leonard de (1911 - )
Hare, Leonard (1921 - )
Harold Leonard Levin (1929 - )
Harter, Leonard Lee (1875 - 1952)
Hauman, Lucien Leon (1880 - 1965)
Hector M. Leon-Gallegos ( - )
Heinrich Leonhards Skuja (1892 - 1972)
Hemert, Paul Joseph Leonard van (1892 - )
Hendrickz, Frédéric Léon (1911 - )
Holzmann, Timoleon (1843 - )
Hove, Anton Pantaleon (col. 1785 - 1829)
Howard Francis Leonard Rock (1925 - 1964)
Hugo Leonardus Gerth van Wijk (1849 - 1921)
Humblot, Léon (fl. 1848 - )
Hurtt, Leon C. ( - )
Hussenot, Louis Cincinnatus Séverin Léon (1809 - 1845)
Hutchison, Leonard J. (fl. 1988 - )
Ibarra Gonzalez, Leon (fl. 2001 - )
Ibisch, Pierre Leonhard (1967 - )
Immelman, Kathleen Leonore (1955 - )
IUrii Leonardovich Menitskii (1937 - 2001)
Iwanoff, Leonidas ( - )
J. B. Leon ( - )
J. J. G. Léonard (1920 - )
J. L. León de la Luz (1955 - )
J. Leon ( - )
J. León (1916 - )
J. Leon (1940 - 1960)
J. León A. ( - )
J. Léonard (1920 - )
J. Mostacero León (1942 - )
Jalink, Leonardo Martinus (1956 - )
James 'Jim' Leonard Luteyn (1948 - )
Jcevskij, Leonard Antonovic (1894 - )
Jean Joseph Gustave Leonard (1920 - )
Jean Leon Soubeiran (1827 - 1892)
Jean-Louis-Leon Guignard (1852 - 1928)
Jean-Marie Leon Dufour (1780 - 1865)
Jenyns, Léonard (1800 - 1893)
Joachim, Leon (1873 - 1945)
John Leonard Alcorn (1937 - )
John Leonard Knapp (1767 - 1845)
John Leonard Riddell (1807 - 1865)
Johnson, Leonard (1862 - )
Jones, Leon Kilby (1895 - 1966)
Joosten, Johannes Hubertus Leonardus (1904 - )
Jorge León (1916 - )
José Luis León de la Luz (1955 - )
Jose Ponce de Leon (fl. 1814 - )
Joseph Léon Émile Conill (1872 - 1944)
Julian Bablee; Frère Cleonique-Joseph (1886 - )
Jurij Leonardovich (G.) Menitsky (1937 - 2001)
Jury, Stephen Leonard (1949 - )
K. J. Leonard (fl. 1947 - )
Karl Hermann Leonhard Lindinger (1879 - )
Karwacki, Leon (fl. 1911 - )
Kathleen Leonore Immelman (1955 - )
Kelso, Leon Hugh (1907 - )
Kephart, Leonard W. ( - )
Kheil, Napoleon Man., Jr. (1849 - 1923)
King-Church, Leonard A. ( - )
Knapp, John Leonard (1767 - 1845)
Komarov, Vladimir Leontjevic (1869 - 1945)
Komarov, Vladimir Leontjevich (1869 - 1945)
Koval, Eleonora Zakharovna (1930 - )
Krok, Thorgny Ossian Bolivar Napoleon (1834 - 1921)
Kucera, Clair Leonard (1922 - )
Kurt J. Leonard (fl. 1947 - )
L. A. Leon (rec. 1939 - )
L. S. Leoni (col. 1992 - )
Laborde, Léon Emmanuel Simon Joseph Marquis de (1807 - )
Lambert, Leon Celestin (1867 - )
Lambertye, Leonce de (1810 - 1877)
Lambertye, Léonce de (Count) (1810 - 1877)
Le Clerc, Leon ( - )
Lefebvre, Camille Leon (1905 - )
Lefkovitch, Leonard P. (fl. 1995 - )
Legrain, Leon (1928 - )
Legué, Alphonse Marie Léon (1841 - 1920)
Leo Jalink; Leonardo Martinus Jalink (1956 - )
León (1871 - 1955)
León (1871 - 1955)
Léon (Louis) Vaillant (1834 - 1914)
Leon A., J. ( - )
Leon Arencibia, M. C. (1951 - )
Leon Arnould (fl. 1893 - )
Léon Besnou (1811 - )
Léon Boyer (fl. 1890 - )
Leon Camille Marius Croizat (1894 - 1982)
Leon Carlier (1821 - 1901)
Leon Carlton Snyder (1908 - )
Leon Castillon (fl. 1926 - )
Leon Celestin Lambert (1867 - )
Léon Charles Albert (1914 - 1940)
Leon Charles Albert Calmette (1863 - 1933)
Léon Chenault (1853 - 1930)
Leon Croizat Chaley (1894 - 1982)
León de la Luz (1955 - )
Leon de la Luz, José Luis (1955 - )
Leon Degrully (fl. 1887 - 1907)
Leon E. Pavlick (fl. 1983 - )
León Enríquez, Bernardino Leonardo (fl. 2006 - )
Leon Faye ( - 1855)
Leon Gabriel Charles Parde (1865 - 1943)
Leon Gaston Genevier (1830 - 1880)
Léon Gaston Seurat (1872 - )
Leon Glicenstein (fl. 1990 - )
Leon Gouas (fl. 1858 - )
Leon Grigoraki (fl. 1921 - )
Leon Grodzinsky (1908 - )
Leon Hatchig Leonian (1888 - 1945)
Leon Hugh Kelso (1907 - )
Leon Humblot (fl. 1848 - )
León Ibarra-González (fl. 2001 - )
Leon Joachim (1873 - 1945)
Leon Karwacki (fl. 1911 - )
Leon Kilby Jones (1895 - 1966)
Leon L. Simon-Louis (1834 - 1913)
Leon le Clerk ( - )
Leon Louis Rolland (1841 - 1912)
Leon M., Marco (col. 2000 - )
Leon M., Marco et alia (col. 2000 - )
Leon Marie Dufour (1862 - 1942)
Leon Marret (fl. 1900 - 1929)
Leon Nikler ( - )
Leon Nowakowski (1847 - )
Leon Octave Ducellier (1878 - 1937)
Leon Provencher (1820 - 1892)
Leon R. Perrie (fl. 2003 - )
Leon Saint-Leger; Leon St.-Leger (1868 - 1912)
Leon Semenowitj de Cienkowski (1822 - 1887)
Leon T. Lucas (fl. 1973 - )
Leon Tejera, Hilda (1955 - )
Leon Toussaint (fl. 1953 - )
Leon Vouaux (1870 - 1914)
Léon [Jaques Gustave] Diguet (fl. 1925 - )
León, (Brother) (1871 - 1955)
León, (Brother) (1871 - 1955)
León, (Frère) (1871 - 1955)
León, (Frère) (1871 - 1955)
León, (Hermano) (1871 - 1955)
León, (Hermano) (1871 - 1955)
León, (Hermano, Brother) & Alain, (Brother) (1940 - )
Leon, (Pater) Nicolas ( - )
León, Blanca (1957 - )
Leon, Ceremiro de (col. 1984 - )
Leon, Frère (Brother) Joseph Sylvestre Sauget (1871 - 1955)
Leon, Frére {Brother} Joseph Sylvestre Sauget (1871 - 1955)
Leon, J. (1940 - 1960)
Leon, J. B. ( - )
Leon, Jeorge ( - )
León, Jorge (1916 - )
Leon, Jorge (1940 - 1960)
Leon, Luis A. (rec. 1939 - )
Leon, M. C. (col. 1980 - )
Leon, Miguel Dominguez (col. 1990 - )
Leon, Nat J. de (col. 1960 - )
Leon, X. (col. 1982 - )
Léon-Bonaventure (1810 - 1886)
Leon-Bonaventure Eloy de Vicq (1810 - 1886)
Leon-Dufour ( - )
Leon-Gall. ( - )
Leon-Gallegos ( - )
Leon-Gallegos, Hector M. ( - )
León-Yánez (fl. 1999 - )
León-Yánez, Susana (fl. 1999 - )
Leona Baksay (1915 - )
Leonam de Azerdo Pena (fl. 1926 - )
Leonam de Azevedo Penna (1903 - 1979)
Leonard (1892 - 1968)
Leonard Alfred Boodle (1865 - 1941)
Leonard B. Thien (1938 - )
Leonard C. Ferrington (fl. 1999 - )
Leonard Cockayne (1855 - 1934)
Leonard Doncaster (fl. 1910 - )
Leonard Eric Newton (1936 - )
Leonard F. Frisbie (fl. 1959 - )
Leonard Fuchs (1501 - 1566)
Leonard Howard John Williams (1915 - )
Leonard J. Hutchison (fl. 1988 - )
Leonard J. Uttal (1918 - 2005)
Leonard John Brass (1900 - 1971)
Leonard John Margetts (1923 - )
Leonard John Sedgwick (1883 - 1925)
Leonard Lee Harter (1875 - 1952)
Leonard Leonardvic Dekaprelevic (1886 - )
Leonard P. Lefkovitch (fl. 1995 - )
Leonard P. Wolfe, Jr. (fl. 1951 - )
Leonard Plukenet (1642 - 1706)
Leonard Richard Wilson (1906 - 1998)
Leonard Rodway (1853 - 1936)
Leonard Roy Freese (1906 - )
Leonard Sesler ( - 1785)
Leonard Stoloff (1915 - )
Leonard William Melander (1893 - )
Leonard, A. (col. 1993 - )
Léonard, Alain (col. 1957 - 1959)
Leonard, Emery Clarence (1892 - 1968)
Leonard, Fred Eugene (1866 - 1922)
Leonard, G. M. (1902 - )
Leonard, Genevieve M. (1902 - )
Leonard, Genevieve M. [née Mannakee; Genevieve Mannakee Leonard] (1902 - )
Leonard, Guy (1927 - )
Leonard, Jean Joseph Gustave (1920 - )
Leonard, Kurt J. (fl. 1947 - )
Leonard, Steven W. (1943 - )
Leonardi, Patricia I. (1959 - )
Leonardia (1975 - )
Leonardía (1975 - )
Leonardia, Alfredo Amiel Pagandían (1975 - )
Leonardo Borghi; Borgui (error?) (fl. 2002 - )
Leonardo Co (col. 1990 - )
Leonardo Dias Meireles (1979 - )
Leonardo Fea (1852 - 1903)
Leonardo Gubellini (1954 - )
Leonardo Legaspi Co (1953 - )
Leonardo M. Versieux (fl. 2007 - )
Leonardo Oliva (1805 - 1873)
Leonardo P. Félix (1958 - )
Leonas Lancelot Burlingame (1876 - 1950)
Leonce de Lambertye (1810 - 1877)
Leonce Motelay (1831 - 1917)
Leone Formiggini ( - )
Leonet ( - )
Leong, W. F. (fl. 1990 - )
Leong-Skornickova, Jana (1975 - )
Leonh. (1809 - 1875)
Leonhardi (1809 - 1875)
Leonhardi, Peter Carl Pius Gustav Hermann (Freiherr) von (Hermann, von) (1809 - )
Leonhardi, Peter Carl Pius Gustav Hermann von (1809 - 1875)
Leonhardt (1902 - )
Leonhardt, Carl (1902 - )
Leonhardt, Otto (rec. 1908 - )
Leonhardt, R. ( - )
Leonhart Rauwolff (1535 - 1596)
Leoni, L. S. (col. 1992 - )
Leoni, Lucio S. (col. 1992 - )
Leonian (1888 - 1945)
Leonian, Leon Hatchig (1888 - 1945)
Leonid Andrejewitsch Schkorbatow (1884 - 1972)
Leonid Antonovich Utkin (1884 - 1964)
Leonid Efimovic Rodin (1907 - 1966)
Leonid I. Malysev (1931 - )
Leonid I.?, 1931-x (col. 1958 - )
Leonid Ipat'evich Govorov (1885 - 1941)
Leonid Ivanovic, 1907-x? (col. 1930 - 1939)
Leonid Ivanovich Prilipko (1907 - 1983)
Leonid Petrovich Bordakov (1885 - 1940)
Leonid Vladimirovich Averyanov (1955 - )
Leonid Vladimirovich Bardunov (1932 - )
Leonida S. Chinthibidze (1923 - )
Leonidas Botelho Damazio (1854 - 1922)
Leonidas Iwanoff ( - )
Leonidas Pinatzis (1891 - 1964)
Leonis, Chr. (col. 1898 - )
Leonore Bockemühl (fl. 1978 - )
Leonov, M. V. (fl. 1993 - )
Leonova (1930 - )
Leonova, T. G. (1930 - )
Leontin Ştefan Péterfi (1937 - )
Leontina Camici (fl. 1948 - )
Leontjev, A. M. (col. 1928 - )
Leontovitch, C. ( - )
Levin, Harold Leonard (1929 - )
Lindinger, Karl Hermann Leonhard (1879 - )
Louis Cincinnatus Severin Leon Hussenot (1809 - 1845)
Louis Leon Lucien Prunol de Rosny (1837 - 1916)
Lucas, Leon T. (fl. 1973 - )
Lucien Leon Hauman-Merck (1880 - 1965)
Lundholm, Eleonora (col. 1888 - )
Luteyn, James Leonard (1948 - )
M. C. Leon (1951 - )
M. C. León (col. 1980 - )
M. C. León Arencibia (1951 - )
M. C. Leon Arencibia (1951 - )
M. D. Leon (col. 1990 - )
M. León M. (col. 2000 - )
M. V. Leonov (fl. 1993 - )
Malyschev, Leonid I. (1931 - )
Mangubat, Leoncio (col. 1906 - )
Marchand, Nestor Leon (1833 - 1911)
Margetts, Leonard John (1923 - )
Maria Leonor D'El Rei Souza; Maria Leonor Souza (fl. 2002 - )
Maria Leonor de Sousa Gonçalves (1934 - 2004)
Maria Leonor Gonçalves (1934 - 2004)
Maria Leonor Souza (fl. 2002 - )
Marie Leon Camille Raymond Gaume (1885 - 1964)
Marret, Léon (fl. 1900 - 1929)
Martin, Floyd Leonard (1909 - )
Martin, Léon Francois (1866 - 1919)
Meireles, Leonardo Dias (1979 - )
Melander, Leonard W. (col. 1949 - )
Melander, Leonard William (1893 - )
Menitski, Yury Leonardovich (G.) (1937 - 2001)
Menitsky, Jurij Leonardovich (G.) (1937 - 2001)
Meredith, Leonard (col. 1969 - )
Merlet de la Boulaye, Gabriel Eleonor (1736 - 1807)
Metrod, Léon Georges Edmond (1883 - )
Michael Leonard Curto (1956 - )
Michalkova, Eleonóra (1953 - )
Miguel Dominguez Leon (col. 1990 - )
Monetti, Léon ( - )
Montealegre, Hilda León Paez de (col. 2002 - )
Mostacero Leon, J. (1942 - )
Mostacero León, J. (1942 - )
Mostacero León, José (1942 - )
Mostacero León, José et alia (1942 - )
Mosyakin, Sergei Leonidovich (1961 - )
Mosyakin, Sergiy Leonidovich (1961 - )
Motelay, Léonce (1831 - 1917)
Mwasumbi, Leonard B. (1938 - )
N. J. de Leon (col. 1960 - )
Nadean, Leon ( - )
Napoleon Nicklès ( - 1878)
Napoleone Passerini (1862 - 1951)
Naumann, Einar Christian Leonard (1891 - 1934)
Naveau, [Georges] Raymond Léonard (1889 - 1932)
Naveau,Raymond Léonard (1889 - 1932)
Nekrassova, Vera Leontievna (1881 - 1979)
Nestor Leon Marchand (1833 - 1911)
Newton, Leonard Eric (1936 - )
Nicklès, Napoleon ( - 1878)
Nicolas, (Léon Marie Joseph) Gustave (1879 - 1955)
Nikler, Leon ( - )
Nowakowski, Leon (1847 - )
O. Leonhardt (rec. 1908 - )
Oliva, Leonardo (1805 - 1873)
Oskamp, Dirk Leonard (1768 - )
Otto Christian Leonor (Kristian Laurits) Gelert (1862 - 1899)
P. C. P. G. H. von Leonhardi (1809 - )
P. I. Leonardi (1959 - )
P. P. Ponce de León y Carrillo (1915 - )
P. Ponce de Leon (1915 - )
P. Wilson & Bro. León (col. 1911 - )
Pardé, Leon Gabriel Charles (1865 - 1943)
Passerini, Napoleone (1862 - 1951)
Passerini, Napoleone di (1862 - 1951)
Passerini, Napoleone [Conte] di (1862 - 1951)
Pater N. Leon ( - )
Patricio Ponce de Leon y Carrillo (1915 - )
Paul-Napoléon Doûmet-Adanson (1834 - 1897)
Pavlick, Leon E. (fl. 1983 - )
Peña León, Renato (1931 - )
Pena, Leonam de Azeredo (fl. 1926 - )
Perrie, Leon R. (fl. 2003 - )
Peter Carl Pius Gustav Hermann von Leonhardi (1809 - 1875)
Péterfi, Leontin Ştefan (1937 - )
Philippe Edouard Leon van Tieghem (1839 - 1914)
Piedboeuf, Léon Paul Gérard (1900 - )
Pierre-Léonce Aubert (fl. 1873 - )
Pinatzis, Leonidas (1891 - 1964)
Pintos, Pantaleon ( - )
Plukenet, Leonard (1642 - 1706)
Poelt, Leonard (1929 - )
Ponce de Leon (fl. 1814 - )
Ponce de León y Aymé, Antonio (1887 - 1961)
Ponce de Leon y Carrillo, Patricio (1915 - )
Ponce de León y Carrillo, Patricio Pastor (1915 - )
Ponce de Leon, Jose (fl. 1814 - )
Prilipko, Leonid Ivanovich (1907 - 1983)
Provancher, Abbé Léon (1820 - )
Provancher, Leon (1820 - 1892)
Pultz, Leon Merle (1904 - )
Pynaert, Léon A. (1876 - )
Quiroz, D. Leonor (1958 - )
R. Leonhardt ( - )
R. M. Bracamontes Léon (1949 - )
R. Peña León (1931 - )
Raamsdonk, Leonard W. D. van (1955 - )
Ramenskij, Leontif Gregorjevi (1884 - )
Rauwolff, Leonhart (1535 - 1596)
Raymond Leonard Naveau (1889 - 1932)
Rene Leon Sebille (1851 - 1938)
Rene Leonard A. Schumacker (1937 - )
Restrepo, Blanca Leonora (fl. 1990 - 1999)
Rev. Leonard Dieckman (col. 1970 - 1972)
Ricksecker, Leonora Agnes (1849 - )
Riddell, John Leonard (1807 - 1865)
Rock, Howard Francis Leonard (1925 - 1964)
Rodin, Leonid Efimovic (1907 - 1966)
Rodriguez Acosta, Leoncio (col. 1938 - )
Rodway, Leonard (1853 - 1936)
Roger, Léon ( - )
Roland Napoleon Bonaparte, Prince (1858 - 1924)
Rolland, Leon Louis (1841 - 1912)
Rom, Auguste Theophile Leon (1859 - 1929)
Rosny, Louis Leon Lucien Prunol de (1837 - 1916)
Ruiz de Leon, A. (col. 1998 - )
S. León-Yánez (fl. 1999 - )
S. Salas de León (1948 - )
S. W. Leonard (1943 - )
Saint-Cyr, Dominique Napoléon (1826 - 1899)
Saint-Leger, Leon (1868 - 1912)
Salas de León, Sonia (1948 - )
Sanin Garcia, León ( - )
Sastre, Claude Henri Léon (1938 - )
Sastre, Claude Henri Léon & Portecop, Jacques (col. 1975 - )
Sastre, Claude Henri Léon, Sastre, France & Portecop, J. (col. 1976 - )
Schkorbatow, Leonid Andrejewitsch (1884 - 1972)
Schlechtendal, Diederich Franz Leonard von (1794 - 1866)
Schlechtendal, Diedrich Franz Leonhard von (1794 - 1866)
Schlegel, Hendrik Adolf Leonard (1845 - 1901)
Schmuck, Joachim Josef Ignaz Leonhard von (1810 - 1897)
Schuessler, Arthur Michael Leonhard (1966 - )
Schultz, Leonard Peter ( - )
Schultze [-Jena], Leonhard Sigismund (1872 - 1955)
Schumacker, Rene Leonard A. (1937 - )
Sebille, Rene Leon (1851 - 1938)
Sedgwick, Leonard John (1883 - 1925)
Sergei Leonidovich Mosyakin (1961 - )
Sesler, Leonard ( - 1785)
Seurat, Léon Gaston (1872 - )
Simon-Louis, Leon L. (1834 - 1913)
Skuja, Heinrich Leonhards (1892 - 1972)
Smith, Charles Leonard (1866 - 1923)
Snyder, Leon Carlton (1908 - )
Soubeiran, Jean Léon (1827 - 1892)
Souza, Maria Leonor D'El Rei (1955 - )
Springer, Leonard Anthony (1855 - 1940)
Staunton, (Sir) George Leonard, Baronet (1737 - 1801)
Staunton, George Leonard (1737 - 1801)
Staunton, George Leonard (1737 - 1801)
Stejneger, Leonard Hess (1851 - 1943)
Stephen Leonard Jury (1949 - )
Stoloff, Leonard (1915 - )
Stout, Gilbert Leonidas (1898 - 1963)
Stuchlik, Leon (1931 - )
Susana León-Yánez (fl. 1999 - )
Swingle, Leonhardt ( - )
T. G. Leonova (1930 - )
Tachtadshjan, Armen Leonovich (1910 - 2009)
Taisiia Leonidovna Dobrozrakova (fl. 1927 - )
Takhtadjan, Armen Leonovich (1910 - 2009)
Takhtadzhian, Armen Leonovich (1910 - 2009)
Takhtajan, Armen Leonovich (1910 - 2009)
Telhada, Eleonora ( - )
Ternisien, Theophile Antoine Timoleon (1804 - 1879)
Theophile Antoine Timoleon Ternisien (1804 - 1879)
Theuwissen, Léon (1899 - )
Thien, Leonard B. (1938 - )
Thien, Leonard B. (1938 - )
Thomas, René Léon Xavier (1893 - )
Thorgny Ossian Bolivar Napoleon Krok (1834 - 1921)
Thorstenson, Georg-Leonhard (1851 - 1918)
Tieghem, Philippe Édouard Léon van (1839 - 1914)
Timoleon Holzmann (1843 - )
Törnquist, Sven Leonard (1840 - 1920)
Toussaint, Leon (fl. 1953 - )
Trevisan de Saint-Léon, Vittore Benedetto Antonio (1818 - 1897)
Trevisan di San Léon, V. B. A. ( - )
Urrego, Henry Léon ( - )
Utkin, Leonid Antonivich (1884 - 1964)
Uttal, Leonard J. (1918 - 2005)
V. B. A. Trevisan de Saint-Léon (1818 - 1897)
Vaillant, Léon (Louis) (1834 - 1914)
Van den Bossche, Léon (1841 - 1911)
Van Tieghem, P. E. L. = Tieghem, Philippe Édouard Léon van q.v. (1839 - 1914)
Veenendaal, Willem Leonard Hendrik van (1941 - )
Vera Leontievna Nekrasova (1881 - 1979)
Versieux, Leonardo M. (fl. 2007 - )
Vicq, (Leon-Bonaventure) Eloy de (1810 - 1886)
Vittore Benedetto Antonio Trevisan de Saint-Léon (1818 - 1897)
Vladimir Leontevich Komarov (1869 - 1945)
Vouaux, Léon (1870 - 1914)
W. F. Leong (fl. 1990 - )
Walker, Thomas Leonard (1867 - 1942)
Walther Leonard Wangerin (1884 - 1938)
Wangerin, Walther Leonard (1884 - 1938)
Weatherby, Una Leonora (1879 - 1957)
Webb, Leonard James (1920 - )
Webster, Leonard C. (1870 - 1942)
Weyl, Leon H. ( - )
Wheeler, Leonard Richmond (1888 - 1948)
Wijk, Christiaan Leonard van (1909 - )
Wilhelm Christoph Leonhard Gerhard (1780 - 1858)
William Leonard Doran (1893 - )
Williams, Leonard Howard John (1915 - )
Wilson, Leonard Richard (1906 - 1998)
Wilson, Percy & Leon, (Brother) (col. 1911 - )
Winckler, Emil Leonhard Wilhelm (1824 - )
Woerden, Corneille Leon Lambert Henri van (1903 - 1970)
Wolfe, Leonard P., Jr. (fl. 1951 - )
Wray, Leonard (Jr.) (rec. 1850 - 1861)
Wray, Leonard (Jr.) (1853 - 1942)
Wray, Leonard (Sr.?) (rec. 1850 - 1861)
X. Leon (col. 1982 - )
Ximena Leon (col. 1989 - )
Ximena Leon (maiden name) (col. 1982 - )
Zubkov, Peter Leontevic ( - )