Über die Einrichtungen zur Befruchtung Britischer und ausländischer Orchideen durch Insekten : und über die günstigen Erfolge der Wechselbefruchtung - Darwin, Charles, 1809 -1882 (Schweizerbart'sche Verlagshandlung, 1862)

Über die Entwicklungsgeschichte der gegenwärtigen phanerogamen Flora und Pflanzendecke der skandinavischen Halbinsel und der benachbarten schwedischen und norwegischen Inseln - Schulz, August, 1862 -1922 (E. Schweizerbart, 1900)

Ueber den Einfluss des Bodens auf die Vertheilung der Gewächse : nachgewiesen in der Vegetation des nordöstlichen Tirol's - Unger, F. (Franz), 1800 -1870 (Bei Rohrmann und Schweigerd, 1836)

Uebersicht des Gewaechs-Reichs in seinen natuerlichen Entwickelungsstufen : ein Versuch - Reichenbach, H. G. Ludwig (Heinrich Gottlieb Ludwig), 1793 -1879 (Carl Cnobloch, 1828)

The Universal herbal; or, Botanical, medical, and agricultural dictionary; containing an account of all the known plants in the world, arranged according to the Linnean system. Specifying the uses to which they are or may be applied, whether as food, as medicine, or in the arts and manufactures, with the best methods of propagation, and the most recent agricultural improvements ... - Green, Thomas. (Caxton Press, 1824)

The universal herbal : or botanical, medical and agricultural dictionary : containing an account of all known plants in the world, arranged according to the Linnean system. Specifying the uses to which they are or may be applied - Green, Thomas. (Printed at the Caxton Press by H. Fisher, 1816)

Utkast til en svensk flora : eller, Afhandling om svenska växternas väsendteliga kännetecken och nytta - Liljeblad, Samuel, 1761 -1815 (J. F. Edman, 1798)

Utkast til svenska växternas naturhistoria : eller, Sveriges fanerogamer skildrade i korthet med deras växställen och utbredning m. m., deras egenskaper, användning och historia i allmänhet - Nyman, Carl Fredrik, 1820 -1893 (N. M. Lindh, 1867)

Vade-mecum du botaniste dans la région parisienne. Tableaux synoptiques des familles, genres, espèces et variétés et 1634 figures de toutes les espèces de plantes croissant dans la région parisienne - Jeanpert, Henri-Édouard, 1861 -1921 (P. Klincksieck, 1911)

The various contrivances by which orchids are fertilised by insects - Darwin, Charles, 1809 -1882 (J. Murray, 1904)

The various contrivances by which orchids are fertilised by insects - Darwin, Charles, 1809 -1882 (John Murray, 1877)

The various contrivances by which orchids are fertilised by insects - Darwin, Charles, 1809 -1882 (Appleton, 1877)

Various contrivances by which orchids are fertilised by insects - Darwin, Charles, 1809 -1882 (Appleton, 1892)

The various contrivances by which orchids are fertilised by insects - Darwin, Charles, 1809 -1882 (J. Murray, 1899)

The various contrivances by which orchids are fertilised by insects - Darwin, Charles, 1809 -1882 (John Murray, 1890)

The various contrivances by which orchids are fertilized by insects - Darwin, Charles, 1809 -1882 (D. Appleton and Co, 1895)

The various contrivances by which orchids are fertilized by insects - Darwin, Charles, 1809 -1882 (D. Appleton and Co, 1877)

The various contrivances by which orchids are fertilized by insects - Darwin, Charles, 1809 -1882 (D. Appleton and company, 1884)