The principles of floriculture - White, Edward Albert, 1872 -1943 (The Macmillan company, 1915)

The principles of plant-teratology - Worsdell, Wilson Crosfield (The Ray Society, 1915)

The principles of plant-teratology - Worsdell, Wilson Crosfield (The Ray Society, 1916)

Proceedings and transactions of the Natural History Society of Glasgow - Natural History Society of Glasgow. (The Society, 1889)

Proceedings of the annual convention of the society of American Florists - Society of American Florists; Ornamental Horticulturists. (Society of American Florists and Ornamental Horticulturalists, 1885)

Proceedings of the Horticultural Society of London - Royal Horticultural Society (Great Britain) (Bradbury and Evans, 1841)

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

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

Pteridologist - British Pteridological Society. (The Society, 2018)

Quarterly summary of re-identifications, October, November, December 1961 : Summary No. 7 - 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 palms, ferns, orchids, flowering plants, stove plants, hardy perennials, seeds and bulbs, etc., etc. : September, October, November, December, 1895 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pitcher & Manda, 1895)

Quarterly trade catalogue of palms, ferns, orchids, flowering plants, stove plants, hardy perennials, seeds and bulbs, etc. etc. : January, February, March, 1896 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pitcher & Manda, United States Nurseries, 1896)

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

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)

Queensland Agricultural Journal - Queensland. Department of Agriculture; Stock. (Queensland Dept. of Primary Industries, 1900)

Recueil des travaux botaniques néerlandais - Koninklijke Nederlandse Botanische Vereniging. (Société botanique néerlandaise, 1904)

Redia - R. Stazione di entomologia agraria in Firenze. (Tipografia R. Coppini & Co. [etc.], 1917)

Reichenbachia :Orchids illustrated and described - Sander, F. 1847 -1920 (F. Sander & Co., Orchid growers & importers;H. Sotheran & Co.;I. Forstermann, [etc., etc.], 1888)

Reichenbachia :orchids illustrated and described - Sander, F. 1847 -1920 (F. Sander, 1892)

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

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, 1922)

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)

Revue des sciences naturelles appliquées - Société nationale d'acclimatation de France (La Société, 1892)

Revue générale de botanique (Libraire générale de l'enseignement, 1913)

Revue horticole (Librairie agricole de la maison rustique, 1872)

Revue horticole (Librairie agricole de la maison rustique, 1876)

Revue horticole (Librairie agricole de la maison rustique, 1881)

Revue horticole (Librairie agricole de la maison rustique, 1882)

Revue horticole (Librairie agricole de la maison rustique, 1883)

Revue horticole (Librairie agricole de la maison rustique, 1884)

Revue horticole (Librairie agricole de la maison rustique, 1885)

Revue horticole (Librairie agricole de la maison rustique, 1886)

Revue horticole (Librairie agricole de la maison rustique, 1887)

Revue horticole (Librairie agricole de la maison rustique, 1888)

Revue horticole (Librairie agricole de la maison rustique, 1889)

Revue horticole (Librairie agricole de la maison rustique, 1891)

Revue horticole (Librairie agricole de la maison rustique, 1892)

Revue horticole (Librairie agricole de la maison rustique, 1893)

Revue horticole (Librairie agricole de la maison rustique, 1894)

Revue horticole (Librairie agricole de la maison rustique, 1829)

Revue horticole (Librairie agricole de la maison rustique, 1896)

Revue horticole (Librairie agricole de la maison rustique, 1902)

Revue horticole (Librairie agricole de la maison rustique, 1905)

Revue horticole (Librairie agricole de la maison rustique, 1908)

Revue horticole (Librairie agricole de la maison rustique, 1909)

Rheinisches Jahrbuch für Gartenkunde und Botanik (E. Strauss, 1883)

Richardiana (Tropicalia, 2015)

Roehrs Nursery : at the sign of the tree : [catalog] - Roehrs, Julius, Company. (Julius Roehrs Co, 1916)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1872)

Saier's garden magazine : a manual of rare flowers, their selection and culture. vol. 2, no. 17 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pioneer Seed Company, 1951)

Schriften der Physikalisch-Ökonomischen Gesellschaft zu Königsberg - Physikalisch-Ökonomische Gesellschaft zu Königsberg (In Commission bei Gräfe und Unzer, 1904)

A second century of orchidaceous plants - Bateman, Jas. (James), 1811 -1897 (L. Reeve & co, 1876)

Seeds, plants & bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pitcher & Manda, 1897)

La Semaine horticole ([s.n.], 1897)

La Semaine horticole ([s.n.], 1898)

La Semaine horticole et guide des cultures coloniales ([s.n.], 1900)

La Semaine horticole et revue des cultures coloniales ([s.n.], 1899)

Service and regulatory announcements - United States. Office of Experiment Stations. (U.S. G.P.O, 1939)

[Siebrecht & Wadley materials] - Siebrecht & Wadley. (1886)

Sitzungsberichte. Abt. 1, Mineralogie, Krystallographie, Botanik, Physiologie der Pflanzen, Zoologie, Paläontologie, Geologie, physische Geographie und Reisen - Kaiserl. Akademie der Wissenschaften in Wien. Mathematisch-Naturwissenschaftliche Klasse. (K.-K. Hof- und Staatsdruckerei in Kommission bei A. Hölder, 1890)

Sitzungsberichte. Abt. 1, Mineralogie, Krystallographie, Botanik, Physiologie der Pflanzen, Zoologie, Paläontologie, Geologie, physische Geographie und Reisen - Kaiserl. Akademie der Wissenschaften in Wien. Mathematisch-Naturwissenschaftliche Klasse. (K.-K. Hof- und Staatsdruckerei in Kommission bei A. Hölder, 1917)

Sitzungsberichte. Abt. 1, Mineralogie, Krystallographie, Botanik, Physiologie der Pflanzen, Zoologie, Paläontologie, Geologie, physische Geographie und Reisen - Kaiserl. Akademie der Wissenschaften in Wien. Mathematisch-Naturwissenschaftliche Klasse. (K.-K. Hof- und Staatsdruckerei in Kommission bei A. Hölder, 1918)

Sitzungsberichte. Abt. 1, Mineralogie, Krystallographie, Botanik, Physiologie der Pflanzen, Zoologie, Paläontologie, Geologie, physische Geographie und Reisen - Kaiserl. Akademie der Wissenschaften in Wien. Mathematisch-Naturwissenschaftliche Klasse. (K.-K. Hof- und Staatsdruckerei in Kommission bei A. Hölder, 1920)

Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin - Gesellschaft Naturforschender Freunde zu Berlin. (Gesellschaft Naturforschender Freunde, 1921)

Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Klasse. Abt. 3, Anatomie und Physiologie des Menschen und der Tiere sowie aus jenem der theoretischen Medizin - Kaiserl. Akademie der Wissenschaften in Wien. Mathematisch-Naturwissenschaftliche Klasse. (K.-K. Hof- und Staatsdruckerei in Kommission bei A. Hölder, 1917)

Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Klasse. Abt. 3, Anatomie und Physiologie des Menschen und der Tiere sowie aus jenem der theoretischen Medizin - Kaiserl. Akademie der Wissenschaften in Wien. Mathematisch-Naturwissenschaftliche Klasse. (K.-K. Hof- und Staatsdruckerei in Kommission bei A. Hölder, 1918)

Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Klasse. Abt. 3, Anatomie und Physiologie des Menschen und der Tiere sowie aus jenem der theoretischen Medizin - Kaiserl. Akademie der Wissenschaften in Wien. Mathematisch-Naturwissenschaftliche Klasse. (K.-K. Hof- und Staatsdruckerei in Kommission bei A. Hölder, 1920)

Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe. Abt. 1, Mineralogie, Botanik, Zoologie, Geologie und Paläontologie - Kaiserl. Akademie der Wissenschaften in Wien. Mathematisch-Naturwissenschaftliche Klasse. (K.-K. Hof- und Staatsdruckerei in Commission bei C. Gerold's Sohn, 1886)

Sitzungsberichte und Abhandlungen - "Flora", Sächsische Gesellschaft für Botanik und Gartenbau, Dresden - "Flora", Sächsische Gesellschaft für Botanik und Gartenbau, Dresden. ("Flora", 1896)

Special offer of the entire collection of orchids - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (United States Nurseries, 1891)

Special trade offer of best old and best new plants, seeds and bulbs : new roses, new phlox, new carnations, new caladimus, new chrysanthemums, new callas, new cannas - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (W.A. Manda, 1897)

Special wholesale catalogue of decorative plants for fall and winter use : also hardy perennials for September and October planting - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (United States Nurseries, 1893)

The standard cyclopedia of horticulture; a discussion, for the amateur, and the professional and commercial grower, of the kinds, characteristics and methods of cultivation of the species of plants grown in the regions of the United States and Canada for ornament, for fancy, for fruit and for vegetables; with keys to the natural families and genera, descriptions of the horticultural capabilities of the states and provinces and dependent islands, and sketches of eminent horticulturists - Bailey, L. H. (Liberty Hyde), 1858 -1954 (The Macmillan Co.; [etc., etc.], 1916)

The standard cyclopedia of horticulture; a discussion, for the amateur, and the professional and commercial grower, of the kinds, characteristics and methods of cultivation of the species of plants grown in the regions of the United States and Canada for ornament, for fancy, for fruit and for vegetables; with keys to the natural families and genera, descriptions of the horticultural capabilities of the states and provinces and dependent islands, and sketches of eminent horticulturists - Bailey, L. H. (Liberty Hyde), 1858 -1954 (Macmillan, 1919)

Stein's Orchideenbuch. Beschreibung, Abbildung und Kulturanweisung der empfehlenswertesten Arten. Mit 184 in den Text gedruckten Abbildungen - Stein, Berthold. (P. Parey, 1892)

Studies of fungous parasites belonging to the genus Glomerella - United States. Bureau of Plant Industry. (Govt. Print. Off, 1913)

Svensk botanisk tidskrift - Svenska botaniska föreningen. (Svenska botaniska föreningen [etc.], 1908)

Sweet-scented flowers and fragrant leaves, interesting associations gathered from many sources, with notes on their history and utility - McDonald, Donald, 1857 - (Charles Scribner's sons, 1895)

The Technologist (Kent & Co, 1866)

Teysmannia (G. Kolff, 1892)

Teysmannia (G. Kolff, 1895)

Teysmannia (G. Kolff, 1904)

Teysmannia (G. Kolff, 1910)

Tilton's journal of horticulture and florist's companion (J.E. Tilton and Co, 1869)

Tilton's journal of horticulture and florist's companion (J.E. Tilton and Co, 1871)

Torreya - Torrey Botanical Club. (Torrey Botanical Club, 1919)

Trade catalogue of seeds, plants and bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (United States Nurseries, 1893)

Trade price list of orchids - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Van Gelder & Co, 1894)

Transactions of the Linnean Society of London, 2nd series: Botany - Linnean Society of London. (1888)

Transactions of the Massachusetts Horticultural Society - Massachusetts Horticultural Society (s.n.], 1858)

Transactions of the Massachusetts Horticultural Society - Massachusetts Horticultural Society (s.n.], 1874)