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original uploader - Public Domain
user at project - Public Domain
OafTobark - CC BY-SA 4.0
不詳 - Public Domain
Heimir Bjorgulfsson - Public Domain
author - Public Domain
unknown. Original uploader was Outremer31 - Public Domain
Jacob Hilsdorf - Public Domain
Originally uploaded by Scott Mingus - Public Domain
Johann Elias Haid - Public Domain
Rhododendrites - CC BY-SA 4.0
unknown - Public Domain
Street & Smith - Public Domain
Public Domain
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Wilde, Cornel
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original uploader - Public Domain
Beecher, Catharine Esther, 1800-1878
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Miller, George Macculloch, 1832-1917
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Post, Emil Leon, 1897-1954
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Bianchi, F. (Francesco), approximately 1752-1810
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user at project - Public Domain
Miller, Ed
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Madison, James, 1751-1836
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OafTobark - CC BY-SA 4.0
Post, George Browne, 1837-1913
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不詳 - Public Domain
Lim, Robert K.S. (Robert Kho-Seng), 1897-1969
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Heimir Bjorgulfsson - Public Domain
Heimir Björgúlfsson
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author - Public Domain
Köster, A. (Adolf), 1883-1930
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Mantegna, Joe
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Winchilsea, George Finch, earl of, 1752-1826
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Santerre, Jean-Baptiste, 1651-1717
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Kiefer, Hermann 1825-1911
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Braugher, Andre
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Fauré, Gabriel, 1845-1924
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Wigglesworth, Vincent B. (Vincent Brian), Sir, 1899-1994
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Kendall, William Sergeant, 1869-1938
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unknown. Original uploader was Outremer31 - Public Domain
De Saussure, W. F. (William Ford), 1792-1870
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Jacob Hilsdorf - Public Domain
Friedberg, Carl, 1872-1955
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Originally uploaded by Scott Mingus - Public Domain
Brough, John, 1811-1865
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Le Bas, Jacques-Philippe, 1707-1783
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Johann Elias Haid - Public Domain
Haid, Johann Jacob, 1704-1767
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Camesi, Gianfredo, 1940-....
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Rhododendrites - CC BY-SA 4.0
Westheimer, Ruth K. (Ruth Karola), 1928-
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unknown - Public Domain
Fernow, B. E. (Bernhard Eduard), 1851-1923
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Street & Smith - Public Domain
Lubin, Arthur, 1901-1995
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Public Domain
Zavala, Lorenzo de, 1788-1836
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Lequeu, Jean-Jacques, 1757-approximately 1825