- Langeani, Francisco
- Langeani, Francisco
- Langebartel, Dave A
- Langebartel, David A
- Langebartel, David A., 1929-
- Lange-Bertalot, H
- Langedyk, W
- Langeland, Kenneth A
- Langelier, Bernadette
- Langelier, Charles, 1850-1920
- Langelier, G. A. (Gus A.)
- Langelier, Gus.
- Langelier, J. C. (Jean Chrysostome), 1845-1910
- Langelier, K
- Langen, G
- Langen, Johann Joachim.
- Langenbach, Gustav, 1831-1873
- Langenbeck, Adelheid
- Langeneck, Joachim
- Langenheim, J H
- Langenheim, Jean
- Langenheim, Jean H
- Langenhove, L. van (Lieva van)
- Langer, Clarence.
- Langer, Ewald
- Langer, Günther
- Langer, H
- Langer, Karl, Ritter von Edenberg, 1819-1887
- Langer, Peter
- Langer, S
- Langer, SL.
- Langeraert, Ward
- Langerak, Gijsbert (Leiden)
- Langerhans, Paul, Dr. 1847-1888
- Langermann, Jasmin
- Langeron
- Langeron, Maurice
- Langeron, Maurice, 1874-1950
- Langers Seed & Floral Co.
- Langers Seed & Floral Company.
- Langethal, Chr. Ed. (Christian Eduard), 1806-1878
- Langeveld Bulb Co. Inc.,
- Langevin, Jean, 1821-1892
- Langfeld, Herbert Sidney, 1879-1958
- Langfeld, Millard, 1872-
- Langford, Mr. (Abraham), 1711-1774
- Langford, D B
- Langford, Darren
- Langford, Emanuel
- Langford, F M
- Langford, George, 1876-1964
- Langford, Jennifer
- Langford, Steven J
- Langford, W G
- Langguth, A
- Langguth, A.
- Langguth, Alfredo
- Langguth, Alfredo
- Langguth, Alfredo R
- Langguth, Christianus Augustus.
- Langhans, H.
- Langhoffer, August
- Langhorne, John, 1735-1779
- Langiaux, Jean
- Langille, J H
- Langille, J. E.
- Langille, J. H.
- Langille, J. H. (James Hibbert), 1841-1923
- Langille, W. A.
- Langkavel, B
- Langkavel, Bernhard August, 1825-1902
- Langlassé, Eugène, 1900
- Langle, R.
- Langle, Richard, Jr.,
- Langlebert, Edmond
- Langlebert, J.
- Langlès, L. (Louis), 1763-1824
- Langley Research Center.
- Langley, Batty, 1696-1751
- Langley, Chris J.
- Langley, Edward Archer.
- Langley, J. N. (John Newport), 1852-1925
- Langley, Roger F.
- Langley, S. P. (Samuel Pierpont), 1834-1906
- Langley, Wilhelmus, 1616-1668
- Langley, William
- Langlois et Leclercq,
- Langlois Floral Garden.
- Langlois, A. B. (Auguste Barthélemy), 1832-1900
- Langlois, Auguste B.
- Langlois, Charles Victor, 1863-1929
- Langlois, David.
- Langlois, E. C.
- Langlois, Garret D.,
- Langlois, Paul, 1862-
- Langlois, Paul.
- Langlois, Pierre Gabriel, 1754-1810
- Langlumé,
- Langlumé, Pierre, 1790-
- Langmaid, John R.
- Langmaier, Magdalena
- Langmore, Naomi E
- Langmuir, Arthur Comings, 1872-1941
- Langmuir, Irving, 1881-1957
- Lango Reynoso, Fabiola
- Langois, Dr.
- Langone, Jose
- Langone, José A.
- Langoni, Helio
- Langor, D. W.
- Langor, David
- Langor, David W
- Langor, David William, 1960-
- Langor, Stephen
- Lango-Reynoso Fabiola
- Langourov, Mario
- Langrand, Olivier
- Langridge, John R.
- Lang's Nursery (Platteville, Wis.)
- Langsdorff, G. H. von (Georg Heinrich), 1774-1852
- Langstaff, R.
- Langston, R L
- Langston, Robert L
- Langston, Wann, Jr. 1921-2013
- Langstroth P., Roberto
- Langstroth, L. L. (Lorenzo Lorraine), 1810-1895
- Langstroth, Robert
- Langton, Hugh H.
- Langton, P H
- Langton, Peter H
- Langton, Thomas, 1849-1914
- Langtry, Walter.
- Languasco, Paola
- Languuth, A
- Languy, Marc
- Langworthy, A. P. (Alan P.)
- Langworthy, C. F. (Charles Ford), 1864-1932
- Langworthy, R A
- Lanham, U N
- Lanham, Urless N
- Lanier, Charles D. (Charles Day), 1868-1945
- Lanier, Charles Day, 1868-
- Lanier, Charles Day.
- Lanier, David Louis, 1950-
- Lanier, G N
- Lanier, M. C.
- Lanier, Sidney, 1842-1881
- Lanier's (Florala, Ala.)
- Lanigan, Patrick J
- Laning, B A
- Laning, Enoch. active 1848-1860
- Laning, J. F. (Jay Ford), 1853-1941
- Lanjekar, Vikram
- Lanjouw, J.
- Lanjouw, Joseph
- Lank, David B
- Lankester E. Ray Sir, (Edwin Ray) 1847-1929
- Lankester, Charles H., 1879-1969
- Lankester, E. Ray Sir, (Edwin Ray), 1847-1929
- Lankester, Edwin, 1814-1874
- Lankester, Phebe, 1825-1900
- Lankford Nursery.
- Lankford, W. E.
- Lankow, Richard
- Lanktree, John
- Lanktree, P A D
- Lanman, Charles R
- Lanna, Maria Célia da Silva
- Lanner, Harriette A
- Lanner, Julia
- Lanner, R M
- Lanner, Ronald M
- Lanner, Ronald M.
- Lanning Seed Company.
- Lanning, Dirk V
- Lanning, F C
- Lanning, George, 1852-1920
- Lanning, Robert G.
- Lannino, Antonella
- Lannoo, Michael J
- Lannoo, Michael J.
- Lannuzel, Guillaume
- Lannuzel,Guillaume
- Lanoye, Ferdinand de, 1810-1870
- Lanpher, Frederick K., & co.
- Lanquentin, P
- Lanquetin, P
- Lanquetin, Paule
- Lanquist, Karl.
- Lans, Cheryl
- Lansac, Claudia
- Lansac-Tôha F. A.
- Lansac-Tôha, F. M.
- Lansac-Tôha, FA
- Lansac-Tôha, FA.
- Lansac-Tôha, Fábio A.
- Lansac-Tôha, Fabio Amodêo
- Lansac-Tôha, Fábio Amodêo
- Lansberge, J. W. van (Johan Willem), 1830-1903
- Lansburgh & Bro.
- Lansbury
- Lansbury, I
- Lansdown, R V
- Lansdown, Richard V
- Lansing, Albert I
- Lansing, C. F.
- Lansing, Domenica A.
- Lansing, Gerrit Yates, 1783-1862
- Lansing, Robert, 1864-1928
- Lansing, Sarah W.
- Lanspeary, P V
- Lanteigne, Jacqueline.
- Lanteri, Analía
- Lanteri, Analía
- Lanteri, Analia A.
- Lanteri, Analía A.
- Lanteri, Analía Alicia.
- Lanteri, Luca
- Lantermann, W
- Lantermann, Werner
- Lanthier, Mario
- Lantieri, Angela
- Lantow, J. L.
- Lantschner, María V
- Lantsov, Vladimir
- Lantz, Clark W.
- Lantz, Coulson
- Lantz, D E
- Lantz, David E. (David Ernest)
- Lantz, Henrik
- Lantz, L
- Lantz, L A
- Lantz, Stanley W.
- Lantz, Trevor C
- Lantzke, I
- Lantzke, I R
- Lanus, Bernabe Lopez
- Lanusse, Agustín
- Lanyon, S M
- Lanyon, Scott M
- Lanyon, Wesley E.
- Lanz, Arthur
- Lanz, Juan Bautista.
- Lanza, B
- Lanza, Benedetto
- Lanza, S
- Lanza-Espino, Guadalupe de la
- Lanzaro, Gregory C
- Lanzaro, Gregory Charles, 1950-
- Lanzavecchia, Silvia