Oakes Ames Orchid Herbarium correspondence files - Ames, Oakes, 1874 -1950 (1909)

Oakes Ames Orchid Herbarium correspondence files - Ames, Oakes, 1874 -1950 (1926)

Oakes Ames Orchid Herbarium correspondence files - Ames, Oakes, 1874 -1950 (1921)

Observationes botanicae :quibus plantae Indiae Occidentalis aliaeque Systematis vegetabilium ed. XIV illustrantur earumque characteres passim emendantur - Swartz, Olof, 1760 -1818 (Sumtu Jo. Jacobi Palmii, 1791)

Observationes botanicae quibus plantae Indiae Occidentalis : aliaeque Systematis vegetabilium ed. XIV illustrantur earumque characteres passim emendantur : cum tabulis aeneis - Swartz, Olof, 1760 -1818 (Sumtu Jo. Jacobi Palmii, 1791)

Observations on the colors of flowers - Hervey, E. W. (Eliphalet Williams), 1834 -1925 (E. Anthony & Sons, 1899)

Observations on the flora of Japan - Queiroz, Margareth M. C. (1901)

Observations on the flowering plants, ferns and fern allies growing wild in Marquette County, Michigan, in 1916 and 1917, especially in the vicinity of the Huron Mountain Club - University of Michigan. Museum of Zoology. (Published by the University, 1918)

Occasional papers - San Diego Society of Natural History. (San Diego Society of Natural History, 1949)

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 2010)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1878)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1879)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1883)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1891)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1892)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1897)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1901)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1902)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1905)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1906)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1910)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1920)

Oesterreichisches botanisches Wochenblatt ([L.W. Seidel], 1851)

Oesterreichisches botanisches Wochenblatt ([L.W. Seidel], 1853)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1883)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1896)

The Ohio naturalist - Ohio Academy of Science. (Biological Club of the Ohio State University, 1907)

The Ohio naturalist - Ohio Academy of Science. (Biological Club of the Ohio State University, 1906)

On British wild flowers considered in relation to insects - Lubbock, John, Sir, 1834 -1913 (Macmillan, 1875)

On British wild flowers considered in relation to insects - Lubbock, John, Sir, 1834 -1913 (Macmillan, 1890)

On British wild flowers considered in relation to insects - Lubbock, John, Sir, 1834 -1913 (Macmillan, 1909)

On British wild flowers considered in relation to insects - Lubbock, John, Sir, 1834 -1913 (MacMillan, 1890)

On the flora of Australia : its origin, affinities, and distribution : being an introductory essay to the flora of Tasmania - Hooker, Joseph Dalton, 1817 -1911 (Lovell Reeve, 1859)

On the popular names of British plants : being an explanation of the origin and meaning of the names of our indigenous and most commonly cultivated species - Prior, R. C. Alexander (Richard Chandler Alexander), 1809 -1902 (F. Norgate; [etc., etc.], 1879)

One hundred water-color paintings of California wild flowers by Ethel M. Wickes - Wickes, Ethel May, 1872 -1940 (s.n, 1920)

Onomatologia botanica completa : oder Vollständiges botanisches Wörterbuch ; worinn nicht nur alle Kunstwörter übersetzt und erklärt, die bekannte [sic] Pflanzen nach der Lehrart des Ritters von Linne beschrieben, ihre verschiedene Namen nach den berühmtesten Schriftstellern angeführt, und eine kleine Lebensgeschichte der vornehmsten Kräuterkundigen beygefügt, sondern auch die Heilskräfte und der Nutzen, den die Arzney-Wissenschaft, Landwirtschaft, Färberey, Vieharzney- und Scheidekunst aus denselben ziehen, aus den besten Schriften dieser Art und aus eigener Erfahrung erläutert werden von einer Gesellschaft erfahrner Pflanzenkundiger - Gmelin, Johann Friedrich, 1748 -1804 ([publisher not identified], 1773)

The Ontario natural science bulletin - Wellington Field Naturalists' Club. (Wellington Field Naturalists' Club, 1910)

The Ontario natural science bulletin - Wellington Field Naturalists' Club. (Wellington Field Naturalists' Club, 1905)

The Ontario natural science bulletin - Wellington Field Naturalists' Club. (Wellington Field Naturalists' Club, 1906)

The Ontario natural science bulletin - Wellington Field Naturalists' Club. (Wellington Field Naturalists' Club, 1913)

Open-air studies in botany : sketches of British wild flowers in their homes - Praeger, R. Lloyd (Robert Lloyd), 1865 -1953 (Griffin, 1897)

The Orchadian - Australasian Native Orchid Society (The Society, 1965)

The Orchadian - Australasian Native Orchid Society (The Society, 1968)

The Orchadian - Australasian Native Orchid Society (The Society, 1967)

The Orchadian - Australasian Native Orchid Society (The Society, 1972)

The Orchadian - Australasian Native Orchid Society (The Society, 1976)

The Orchadian - Australasian Native Orchid Society (The Society, 1977)

The Orchadian - Australasian Native Orchid Society (The Society, 1974)

The Orchadian - Australasian Native Orchid Society (The Society, 1963)

The Orchadian - Australasian Native Orchid Society (The Society, 1979)

The Orchadian - Australasian Native Orchid Society (The Society, 1980)

The Orchadian - Australasian Native Orchid Society (The Society, 1978)

The Orchadian - Australasian Native Orchid Society (The Society, 1981)

The Orchadian - Australasian Native Orchid Society (The Society, 1984)

The Orchadian - Australasian Native Orchid Society (The Society, 1982)

The Orchadian - Australasian Native Orchid Society (The Society, 1987)

The Orchadian - Australasian Native Orchid Society (The Society, 1989)

The Orchadian - Australasian Native Orchid Society (The Society, 1990)

The Orchadian - Australasian Native Orchid Society (The Society, 1991)

The Orchadian - Australasian Native Orchid Society (The Society, 1994)

The Orchadian - Australasian Native Orchid Society (The Society, 1993)

The Orchadian - Australasian Native Orchid Society (The Society, 1998)

The Orchadian - Australasian Native Orchid Society (The Society, 1996)

The Orchadian - Australasian Native Orchid Society (The Society, 1999)

The Orchadian - Australasian Native Orchid Society (The Society, 2002)

The Orchadian - Australasian Native Orchid Society (The Society, 2004)

The Orchadian - Australasian Native Orchid Society (The Society, 2005)

The Orchadian - Australasian Native Orchid Society (The Society, 2009)

The Orchadian - Australasian Native Orchid Society (The Society, 2011)

The Orchadian - Australasian Native Orchid Society (The Society, 2012)

The Orchadian - Australasian Native Orchid Society (The Society, 2016)

The Orchadian - Australasian Native Orchid Society (The Society, 2018)

Orchid album :comprising coloured figures and descriptions of new, rare and beautiful orchidaceous plants (B. S. Williams, 1887)

Orchid album :comprising coloured figures and descriptions of new, rare and beautiful orchidaceous plants (B. S. Williams, 1893)

The orchid-grower's manual, containing brief descriptions of upwards of eight hundred species and varieties of orchidaceous plants; together with notices of their times of flowering, and most approved modes of treatment ... By Benjamin Samuel Williams - Williams, Benjamin Samuel, 1822 -1890 (Victoria and Paradise nurseries, 1871)

The orchid-grower's manual : containing descriptions of the best species and varieties of orchidaceous plants - Williams, Benjamin Samuel, 1822 -1890 (Victoria and Paradise Nurseries, 1885)

The orchid-grower's manual, containing descriptions of the best species and varieties of orchidaceous plants in cultivation ... - Williams, Benjamin Samuel, 1822 -1890 (Victoria and Paradise nurseries, 1894)

The orchid-grower's manual, containing descriptions of upwards of nine hundred and thirty species and varieties of orchidaceous plants; together with notices of their times of flowering, and most approved modes of treatment ... By Benjamin Samuel Williams - Williams, Benjamin Samuel, 1822 -1890 (Victoria and Paradise Nurseries, 1877)

The orchid manual : for the cultivation of stove, greenhouse, and hardy orchids, with a calendar of monthly operations, and classified lists of species - Appleby, Thomas. (Journal of Horticulture and Cottage Gardener Office, 1861)

The Orchid review (Orchid Review ltd.], 1893)