
Deutschlands Flora in Abbildungen, Jacob Sturm und Johann Georg Sturm
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Bilder ur Nordens Flora, deel 1, Carl Axel Magnus Lindman (1922-1926)
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Journal of botany, British and foreign, deel 36, B. Seemann, R. Morgan (1898)
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Water-color sketches of American plants, especially New England, Helen Sharp (1888-1910)
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