Proceedings of the Royal Horticultural Society London (Royal Horticultural Society, 1865)

Proceedings of the Royal Horticultural Society London (Royal Horticultural Society, 1866)

Proceedings of the Royal Society of London. Series B, Containing papers of a Biological character - Royal Society (Great Britain) (Printed for the Royal Society and sold by Harrison & Sons, 1919)

Proceedings, Symposium on Cheatgrass Invasion, Shrub Die-off and Other Aspects of Shrub Biology and Management : Las Vegas, NV, April 5-7, 1989 - Intermountain Research Station (Ogden, Utah) (Intermountain Research Station, Forest Service, U.S. Dept. of Agriculture, 1990)

Prodrom der Waldstätter Gefässpflanzen - Rhiner, Joseph, 1830? -1897 (J. Bürgler, 1870)

Prodromus systematis Aroidearum - Schott, H. W. (Heinrich Wilhelm), 1794 -1865 (1865)

Pronunciation of plant names - Garden Club of America. (Reproduced and printed by National Process Company], 1922)

The propagation of plants ; giving the principles which govern the development and growth of plants, their botanical affinities and peculiar properties; also, descriptions of the process by which varieties and species are crossed or hybridized, and the many different methods by which cultivated plants may be propagated and multiplied - Fuller, Andrew S. (Andrew Samuel), 1828 -1896 (Orange Judd, 1887)

The propagation of plants, giving the principles which govern the development and growth of plants, their botanical affinities and peculiar properties; also, descriptions of the process by which varieties and species are crossed or hybridized, and the many different methods by which cultivated plants may be propagated and multiplied - Fuller, Andrew S. (Andrew Samuel), 1828 -1896 (Orange Judd co, 1887)

The protection of ornamental plants, 1979-April 1989 : citations from AGRICOLA concerning diseases and other environmental considerations - National Agricultural Library (U.S.) (U.S. Dept. of Agriculture, National Agricultural Library, 1989)

A provisional list of the indigenous and naturalized flowering plants of Jamaica - Fawcett, William, 1851 -1926 (Aston W. Gardner & Co, 1893)

Pteridologist - British Pteridological Society. (The Society, 2011)

Publication. Field Columbian Museum. Botanical series - Field Columbian Museum. (Field Columbian Museum, 1902)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1930)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1940)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1941)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1931)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1936)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1937)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1938)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1939)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1942)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1947)

Publications of Field Museum of Natural History. Volume XI, Botanical series [index] - Field Museum of Natural History. (Field Museum of Natural History, 1936)

Quarterly journal of the Florida Academy of Sciences - Florida Academy of Sciences. (Florida Academy of Sciences, 1972)

Quarterly summary of re-identifications, April, May, June 1962 : Summary No. 9 - United States. Bureau of Plant Industry, (New Crops Research Branch, Plant Industry Station, 1960)

Quarterly trade catalogue - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pitcher & Manda, 1894)

Quarterly trade catalogue of bulbs, palms, orchids, ferns, etc. : July and August 1895 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pitcher & Manda, 1895)

Quarterly trade catalogue of bulbs, palms, orchids, ferns, etc. : July, August, September, 1894 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pitcher and Manda, 1894)

Quarterly trade catalogue of palms, ferns, orchids, flowering plants, stove plants, hardy perennials, seeds and bulbs, etc. etc. : January, February, March, 1895 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pitcher & Manda, 1895)

Rapid biological inventories - Field Museum of Natural History. Environmental; Conservation Programs. (Field Museum, 2000)

Rapid biological inventories - Field Museum of Natural History. Environmental; Conservation Programs. (Field Museum, 2001)

Rapid biological inventories - Field Museum of Natural History. Environmental; Conservation Programs. (Field Museum, 2002)

Rapid biological inventories - Field Museum of Natural History. Environmental; Conservation Programs. (Field Museum, 2003)

Rapid biological inventories - Field Museum of Natural History. Environmental; Conservation Programs. (Field Museum, 2006)

Rapid biological inventories - Field Museum of Natural History. Environmental; Conservation Programs. (Field Museum, 2004)

Rapid biological inventories - Field Museum of Natural History. Environmental; Conservation Programs. (Field Museum, 2007)

Rapid inventories, biological and social - Field Museum of Natural History. (Field Museum, 2008)

Rare foliage plants - 1951 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fantastic Gardens, 1951)

Rare plant list. No. 4 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fantastic Gardens, 1955)

Rare plant list : 1953 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fantastic Gardens, 1953)

Rare plant list : summer - 1952 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fantastic Gardens, 1952)

Répertoire de couleurs pour aider à la détermination des couleurs des fleurs, des feuillages et des fruits - Dauthenay, Henri. (Impr. Oberthur, 1905)

Recueil des travaux botaniques néerlandais - Koninklijke Nederlandse Botanische Vereniging. (Société botanique néerlandaise, 1907)

Refugium botanicum : or figures and descriptions from living specimens, of little known or new plants of botanical interest - Baker, John Gilbert, 1834 -1920 (J. van Voorst, 1871)

Reisen in Britisch-Guiana in den Jahren 1840-1844 : nebst einer Fauna und Flora Guiana's nach Vorlagen von Johannes Müller, Ehrenberg, Erichson, Klotzsch, Troschel, Cabanis und Andern - Ehrenberg, Christian Gottfried, 1795 -1876 (J. J. Weber, 1848)

Reisen in Britisch-Guiana in den Jahren 1840-1844 : nebst einer Fauna und Flora Guiana's nach Vorlagen von Johannes Müller, Ehrenberg, Erichson, Klotzsch, Troschel, Cabanis und Andern - Ehrenberg, Christian Gottfried, 1795 -1876 (J. J. Weber, 1847)

Rendiconti - Accademia nazionale dei Lincei. Classe di scienze fisiche, matematiche e naturali. (1910)

Repertorium annuum literaturae botanicae periodicae - Bemmelen, J. A. van. (Erven Loosjes, 1873)

Repertorium specierum novarum regni vegetabilis. Beihefte (Verlag des Repertoriums, 1919)

Repertorium specierum novarum regni vegetabilis (Selbstverlag des Herausgebers, 1905)

Repertorium specierum novarum regni vegetabilis (Selbstverlag des Herausgebers, 1913)

Repertorium specierum novarum regni vegetabilis (Selbstverlag des Herausgebers, 1914)

Report - Singapore Agri-Horticultural Society. (Printed at the Straits Times Press, 1866)

Report - New York (State). Board of General Managers of the Exhibit of the State of New York at the World's Columbian Exposition. (J. B. Lyon, 1894)

Report - Chicago Natural History Museum. (1910)

Report - Chicago Natural History Museum. (1915)

Report / Botanical Exchange Club and Society of the British Isles - Botanical Exchange Club; Society of the British Isles. (1913)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1899)

Report of the chief of the Bureau of Entomology and Plant Quarantine - United States. Office of Experiment Stations. (U.S. Dept. of Agriculture, Bureau of Entomology and Plant Quarantine, 1952)

Report of the chief of the Bureau of entomology and plant quarantine - United States. Agricultural Research Service. (U.S. Govt. Print. Off, 1952)

Report of the Third International Conference 1906 on Genetics : hybridisation (the cross-breeding of genera or species), the cross-breeding of varieties, and general plant-breeding - Royal Horticultural Society (Great Britain) (Royal Horticultural Society, 1907)

Report on Natal Botanic Gardens and Colonial Herbarium for the year ... - Wood, John Medley, 1827 -1915 ([Durban Botanic Society], 1898)

Reptilien und Amphibienpflege - Krefft, Paul (Verlag von Quelle & Meyer, 1907)

The Review of applied entomology. Series A, Agricultural - C.A.B. International. Bureau of Crop Protection (Commonwealth Agricultural Bureaux, etc, 1915)

The Review of applied entomology. Series A, Agricultural - C.A.B. International. Bureau of Crop Protection (Commonwealth Agricultural Bureaux, etc, 1916)

The Review of applied entomology. Series A, Agricultural - C.A.B. International. Bureau of Crop Protection (Commonwealth Agricultural Bureaux, etc, 1917)

Revisio generum plantarum vascularium omnium atque cellularium multarum secundum leges nomenclaturae internationales cum enumeratione plantarum exoticarum in itinere mundi collectarum, mit erläuterungen - Kuntze, Otto, 1843 -1907 (A. Felix [etc., etc.], 1891)

Revisio generum plantarum:vascularium omnium atque cellularium multarum secundum leges nomenclaturae internationales cum enumeratione plantarum exoticarum in itinere mundi collectarum ... - Kuntze, Otto, 1843 -1907 (A. Felix [etc.], 1891)