The Phytologist: a popular botanical miscellany - Newman, Edward, 1801 -1876 (John van Voorst, 1850)

Phytoneuron (Guy L. Nesom, 2014)

Die Pilze Schlesiens - Schroeter, J. (J.U. Kern's Verlag, 1889)

Plant culture; a working hand-book of every day practice for all who grow flowering and ornamental plants in the garden and greenhouse - Oliver, George W. (George Watson), 1858 -1923 (A. T. De La Mare Printing and Publishing Co., Ltd, 1909)

Plant culture; a working handbook of every day practice for all who grow flowering and ornamental plants in the garden and greenhouse - Hottes, Alfred Carl, 1891 -1955 (A. T. De La Mare Co., Inc, 1921)

Plant culture; a working handbook of every day practice for all who grow flowering and ornamental plants in the garden and greenhouse - Hottes, Alfred Carl, 1891 -1955 (A. T. De La Mare co., inc, 1921)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1956)

Plant list, 1932-1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Julius Anthon, 1932)

Plant list, 1933-1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Julius Anthon, 1933)

Plant list, 1934-1935 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Julius Anthon, 1934)

Plant list, 1935-1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Julius Anthon, 1935)

Plant list, 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Green Pastures Gardens, 1937)

Plant materials, 1926 : a catalogue of description and prices - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.V. Lawrence, 1926)

Plantas Romaniae hucusque cognitas - Kanitz, Ágost, 1843 -1896 (Apud E. Demjén, 1879)

Les plantes des montagnes et des rochers, leur acclimatation et leur culture dans les jardins - Correvon, Henry 1854 -1939 (L'auteur; [etc., etc.], 1914)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1949)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1969)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1976)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1985)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1988)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1989)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1991)

Plants for rock gardens - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Buskirk's Independence Nurseries, 1932)

Plants, their natural growth and ornamental treatment - Hulme, F. Edward (Frederick Edward), 1841 -1909 (Marcus Ward & Co, 1874)

Plantsman - New Hampshire Plant Growers' Association. (1995)

Pollen - Edgeworth, Michael Pakenham, 1812 -1881 (Hardwicke & Bogue, 1877)

Popular botany; the living plant from seed to fruit - Step, Edward, 1855 -1931 (H. Holt and company, 1913)

Populäre Botanik oder gemeinfassliche Anleitung zum Studium der Pflanze und des Pflanzenreiches. Zugleich ein Handbuch zum Bestimmen der Pflanzen auf Excursionen - Schmidlin, Eduard, 1808? -1890 (Krais & Hoffmann, 1857)

A practical guide to garden plants, containing descriptions of the hardiest and most beautiful annuals and biennials, hardy herbaceous and bulbous perennials, hardy water and bog plants, flowering and ornamental trees and shrubs, conifers; hardy ferns; hardy bamboos and other ornamental grasses. Also the best kinds of fruits and vegetables that may be grown in the open air in the British Isles with full and practical instruction as to culture and propagation - Weathers, John, 1867 -1928 (Longmans, Green, 1901)

A practical handbook of trees, shrubs, vines and herbaceous perennials - Kirkegaard, John (The Bullard company, 1912)

A practical handbook of trees, shrubs, vines and herbaceous perennials. Hardy and ornamental varieties, their characteristics, uses and treatment - Kirkegaard, John (Williams Bookstores Co, 1916)

A practical handbook of trees, shrubs, vines and herbaceous perennials - Kirkegaard, John (Williams Bookstores Co, 1916)

Price list Spring 1916 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Educational Supply Co, 1916)

Price list Spring 1917 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Educational Supply Co, 1917)

Price list Fall 1916 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Educational Supply Co, 1916)

Price list - Elm City Nursery Co. (Elm City Nursery Co, 1913)

Price list - Elm City Nursery Co. (Elm City Nursery Co, 1914)

Price list - Elm City Nursery Co. (Elm City Nursery Co, 1915)

Price list - Elm City Nursery Co. (Elm City Nursery Co, 1916)

Price list - Elm City Nursery Co. (Elm City Nursery Co, 1920)

Price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (White Elm Nursery Co, 1934)

Price list Fall 1920 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1920)

Price list : fall 1915 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Educational Supply Co, 1915)

Price list fall 1922 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1922)

Price list fall 1923 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1923)

Price list, fall 1924 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1924)

Price list, fall 1925 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1925)

Price-list for fall and spring of 1909-1910 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Joliet Nurseries, 1909)

Price list, issued August 1st, 1931 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Westminster Nursery, 1931)

Price list of evergreens, trees, shrubs, vines, roses and herbaceous perennials : spring 1927 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Framingham Nurseries, 1927)

Price list of hardy herbaceous perennials and alpine plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Julius Heurlin, 1903)

Price list of hardy New England grown plants for the home grounds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Windsor H. Wyman, 1910)

Price-list of hardy ornamental trees, hardy flowering shrubs, evergreens, roses, bulbs, herbaceous plants, fruits, etc. for parks, cemeteries, gardens and all public and private grounds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Old Colony Nurseries, 1908)

Price list of hardy ornamental trees, hardy flowering shrubs, evergreens, roses, bulbs, herbaceous plants, fruits, etc. for parks, cemeteries, gardens and all public and private grounds No. 90 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (T.R. Watson, 1913)

Price-list of hardy ornamental trees, hardy flowering shrubs, evergreens, roses, bulbs, herbaceous plants, fruits, etc. for parks, cemeteries, gardens and all public and private grounds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Old Colony Nurseries, 1904)

Price-list of hardy ornamental trees, hardy flowering shrubs, evergreens, roses, bulbs, herbaceous plants, fruits, etc. for parks, cemeteries, gardens and all public and private grounds No. 89 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (T.R. Watson, 1912)

Price-list of hardy ornamental trees, hardy flowering shrubs, evergreens, roses, bulbs, herbaceous plants, fruits, etc. for parks, cemeteries, gardens and all public and private grounds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (T.R. Watson, 1910)

Price-list of hardy ornamental trees, hardy flowering shrubs, evergreens, roses, bulbs, herbaceous plants, fruits, etc. for parks, cemeteries, gardens and all public and private grounds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Old Colony Nurseries, 1907)

Price list of hardy perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (United States Nurseries, 1889)

Price list of specimen trees, shrubs, roses and fruit : fall 1907 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Andorra Nurseries, 1907)

Price list of specimen trees, shrubs, roses and fruit : fall 1910 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Andorra Nurseries, 1910)

Price list of specimen trees, shrubs, roses and fruit : fall 1912 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Andorra Nurseries, 1912)

Price list of specimen trees, shrubs, roses and fruit : fall 1909 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Andorra Nurseries, 1909)

Price list of specimen trees, shrubs, roses and fruit : fall 1911 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Andorra Nurseries, 1911)

Price list of specimen trees, shrubs, roses and fruit : fall 1907 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Andorra Nurseries, 1908)

Price list of specimen trees, shrubs, roses and fruit : spring 1908 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Andorra Nurseries, 1908)

Price list of specimen trees, shrubs, roses and fruit : spring 1911 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Andorra Nurseries, 1911)

Price list of specimen trees, shrubs, roses and fruit : spring 1912 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Andorra Nurseries, 1912)

Price list of specimen trees, shrubs, roses and fruit : spring 1906 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Andorra Nurseries, 1906)

Price list of specimen trees, shrubs, roses and fruit : Spring 1904 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Andorra Nurseries, 1904)

Price list of specimen trees, shrubs, roses and fruit : Spring 1904 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Andorra Nurseries, 1905)

Price list of trees, shrubs and plants grown and handled "the Andorra way" : spring 1914 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. Warner Harper, 1914)

Price list of trees, shrubs and plants grown and handled "the Andorra way" : spring 1915 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. Warner Harper, 1915)

Price list of trees, shrubs and plants grown and handled "the Andorra way" : spring 1916 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. Warner Harper, 1916)

Price list of trees, shrubs, plants and evergreens Spring 1919 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. Warner Harper, 1919)

Price list of trees, shrubs, plants and evergreens : spring 1918 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. Warner Harper, 1918)

Price list of trees, shrubs, roses and fruit : fall 1903 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Andorra Nurseries, 1903)

Price list : Spring 1920 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1920)

Price list spring 1923 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1923)

Price list, spring 1924 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1924)

Price list, spring 1925 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1925)

Price list, spring 1926 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1926)

Price list : spring-1930-fall - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Westminster Nursery, 1930)

Price list. trees, shrubs, evergreens, vines, roses and herbaceous perennials Fall 1919 - Spring 1920 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1919)

Prirodoslovna istraživanja - Jugoslavenska akademija znanosti i umjetnosti. (1916)

Proceedings (and Annual Report) of the Holmesdale Natural History Club, Reigate - Holmesdale Natural History Club. (1865)

Proceedings and transactions of the British Entomological and Natural History Society - British Entomological; Natural History Society. (British Entomological and Natural History Society, 1969)

Proceedings and transactions of the British Entomological and Natural History Society - British Entomological; Natural History Society. (British Entomological and Natural History Society, 1980)

Proceedings and Transactions of the Croydon Microscopical & Natural History Club - Croydon Microscopical; Natural History Club. (1889)

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

Proceedings and transactions of the Natural History Society of Glasgow - Natural History Society of Glasgow. (The Society, 1892)

Proceedings and transactions of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (The Society, 1956)

Proceedings and transactions of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (The Society, 1962)

Proceedings and transactions of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (The Society, 1965)

Proceedings - Cambridge Philosophical Society Mathematical and physical sciences - Cambridge Philosophical Society. (Cambridge Philosophical Society [etc.], 1910)

Proceedings of the Belfast Natural History and Philosophical Society - Belfast Natural History; Philosophical Society. (1878)

Proceedings of the Botanical Society of the British Isles - Botanical Society of the British Isles. (1956)

Proceedings of the Botanical Society of the British Isles - Botanical Society of the British Isles. (1960)

Proceedings of the Botanical Society of the British Isles - Botanical Society of the British Isles. (1963)

Proceedings of the Botanical Society of the British Isles - Botanical Society of the British Isles. (1965)

Proceedings of the Botanical Society of the British Isles - Botanical Society of the British Isles. (1967)

Proceedings of the Botanical Society of the British Isles - Botanical Society of the British Isles. (1954)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1917)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1923)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1928)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1954)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1964)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1970)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1976)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1981)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1988)

Proceedings of the Cotteswold Naturalists' Field Club - Cotteswold Naturalists' Field Club. (1901)

Proceedings of the Cotteswold Naturalists' Field Club - Cotteswold Naturalists' Field Club. (1910)

Proceedings of the Dublin University Zoological and Botanical Association - Dublin University. Zoological; Botanical Association.

Proceedings of the Manchester Literary and Philosophical Society - Manchester Literary; Philosophical Society. (The Society, 1879)

Proceedings of the Natural history society of Dublin for the session ... - Natural History Society of Dublin. (Printed for the Society, 1846)

Proceedings of the Natural history society of Dublin for the session ... - Natural History Society of Dublin. (Printed for the Society, 1859)

Proceedings of the Natural history society of Dublin for the session ... - Natural History Society of Dublin. (Printed for the Society, 1862)

Proceedings of the Natural history society of Dublin for the session ... - Natural History Society of Dublin. (Printed for the Society, 1866)

Proceedings of the Natural History Society of Glasgow - Natural History Society of Glasgow. (Natural History Society of Glasgow, 1878)

Proceedings of the Natural History Society of Glasgow - Natural History Society of Glasgow. (Natural History Society of Glasgow, 1880)

Proceedings of the Philosophical Society of Glasgow - Philosophical Society of Glasgow.

Proceedings of the Royal Irish Academy - Royal Irish Academy. (Royal Irish Academy, 1883)

Proceedings of the Royal Irish Academy - Royal Irish Academy. (Royal Irish Academy, 1884)

Proceedings of the Royal Irish Academy - Royal Irish Academy. (Royal Irish Academy, 1901)

Proceedings of the Royal Irish Academy - Royal Irish Academy. (Royal Irish Academy, 1902)

Proceedings of the Royal Society of Edinburgh - Royal Society of Edinburgh. (Royal Society of Edinburgh, 1850)