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Missouri Botanical Garden - Public Domain
w:Daniël Mijtens - Public Domain
unknown - Public Domain
Leon Kunstenaar - CC BY-SA 3.0
original uploader - Public Domain
George Grantham Bain Collection (Library of Congress) - Public Domain
GlobalAdaptation - CC BY 2.0
Markus Pössel (Mapos - CC BY-SA 3.0
unknown photographer - Public Domain
peiom - Public Domain
User :de:Michael Linnenbach - Public Domain
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Sitgreaves, Charles, 1803-1878
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Wyeth, N.C. (Newell Convers), 1882-1945
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Argout, Apollinaire-Antoine-Maurice, comte d', 1782-1858
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Missouri Botanical Garden - Public Domain
Shaw, Henry, 1800-1889
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w:Daniël Mijtens - Public Domain
Edmondes, Thomas, Sir, 1563?-1639
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Lepeletier de Saint Fargeau, Michel, 1760-1793
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Rodríguez, Manuel, 1785-1818
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unknown - Public Domain
Schulhoff, Julius, 1825-1898
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unknown - Public Domain
Lowe, E. J. (Edward Joseph), 1825-1900
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unknown - Public Domain
Austin, John, 1790-1859
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Leon Kunstenaar - CC BY-SA 3.0
Solomon, Norman, 1951-....
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Matteotti, Giacomo, 1885-1924
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original uploader - Public Domain
Dixon, Owen
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George Grantham Bain Collection (Library of Congress) - Public Domain
Greef, Arthur de, 1862-1940
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Jameson, Robert, 1774-1854
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unknown - Public Domain
Woodruff, Timothy L. (Timothy Lester), 1858-1913
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Folin, Otto, 1867-1934
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GlobalAdaptation - CC BY 2.0
Barrientos Ortuño, René 1919-1969
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Markus Pössel (Mapos - CC BY-SA 3.0
Rowland, F. S.
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Hamley, Edward Bruce, Sir, 1824-1893
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unknown - Public Domain
Merkel, Gustav, 1827-1885
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unknown photographer - Public Domain
Robinson, James Harvey, 1863-1936
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Cartellieri, Casimir Anton, 1772-1807
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peiom - Public Domain
Lemoinne, John, 1815-1892
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Hofmann, Heinrich, 1842-1902
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Aumont, Tina, 1946-2006
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Cooke, Charles Montague, 1849-
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Culpepper, J. Broward, 1907-
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User :de:Michael Linnenbach - Public Domain
Butschli, O. (Otto), 1848-1920
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unknown - Public Domain
Hocher, Johann Paul