The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1890)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1893)

Our northern shrubs and how to identify them : a handbook for the nature-lover - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (Charles Scribner's Sons, 1922)

Our northern shrubs and how to identify them; a handbook for the nature-lover - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (C. Scribner, 1903)

Our northern shrubs and how to identify them; a handbook for the nature-lover - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (Scribner, 1903)

Our northern shrubs and how to identify them; a handbook for the nature-lover - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (C. Scribner, 1912)

Outlines of botany for the high school laboratory and classroom (based on Gray's Lessons in botany) - Leavitt, Robert Greenleaf, 1865 - (American Book Co, 1901)

Die palaeobotanische Literatur : bibliographische Übersicht über die Arbeiten aus dem Gebiete der Palaeobotanik - Jongmans, W. (Willem), 1878 -1957 (Fischer, 1913)

Pamphlets on forestry in Ohio (1900)

The parasitic fungi of New Jersey - Schwarze, Carl Alois, 1886 - (New Jersey Agricultural Experiment Stations, 1917)

Park and cemetery - Haight, R. J. (Rufus J.) (R.J. Haight, 1898)

Park and cemetery and landscape gardening - Haight, R. J. (Rufus J.) (R.J. Haight, 1901)

Park and cemetery and landscape gardening - Haight, R. J. (Rufus J.) (R.J. Haight, 1902)

Park and cemetery and landscape gardening - Haight, R. J. (Rufus J.) (R.J. Haight, 1907)

A partial list of plants available for various uses in general landscape planting - Taylor, Albert D. (Albert Davis), 1883 -1951 (A.D. Taylor, 1916)

Paxton's magazine of botany, and register of flowering plants - Paxton, Joseph, Sir, 1803 -1865 (Orr and Smith [etc.], 1836)

Perennials : deciduous trees, flowering shrubs, evergreens, hardy vines, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Muller-Sealey Co., Inc, 1924)

Perennials, flowering shrubs, rock plants, evergreens : 1926 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gray & Cole, 1926)

Perennials, rock plants, flowering shrubs, evergreens : 1927 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gray & Cole, 1927)

Perennials, rock plants, flowering shrubs, evergreens : 1928 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gray & Cole, 1928)

Perennials, rock plants, flowering shrubs, evergreens, 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gray & Cole, 1929)

Pesticides documentation bulletin - National Agricultural Library (U.S.) (National Agricultural Library, U.S. Dept. of Agriculture, #c 1965-1969, 1965)

Philadelphia flower show - Pennsylvania Horticultural Society. (The Society, 1967)

Philadelphia flower show - Pennsylvania Horticultural Society. (The Society, 1992)

PHS news - Pennsylvania Horticultural Society. (The Society, 1971)

Phytogeographic survey of North America. A consideration of the phytogeography of the North American continent, including Mexico, Central America and the West Indies, together with the evolution of North American plant distribution - Harshberger, John W. (John William), 1869 -1929 (W. Engelmann, 1911)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1981)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1983)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1984)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1985)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1988)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1990)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1991)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1992)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1993)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1998)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 2007)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 2009)

Phytoneuron (Guy L. Nesom, 2013)

Phytoneuron (Guy L. Nesom, 2015)

Phytoneuron (Guy L. Nesom, 2016)

Phytoneuron (Guy L. Nesom, 2011)

Phytoneuron (Guy L. Nesom, 2014)

Phytoneuron (Guy L. Nesom, 2017)

Phytoneuron (Guy L. Nesom, 2019)

The Pine barrens of New Jersey : August bulletin, 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J.M. Bassett, 1929)

The Pine barrens of New Jersey : May bulletin, 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J.M. Bassett, 1929)

The Pine barrens of New Jersey : September bulletin, 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J.M. Bassett, 1929)

The pinetum: being a synopsis of all the coniferous plants at present known, with descriptions, history and synonyms, and a comprehensive systematic index - Gordon, George, 1806 -1879 (H.G. Bohn [etc.], 1880)

Plant aristocrats of New England, 1849-1939, ninetieth anniversary - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Adams Nursery, Inc, 1939)

Plant care (Taunton Press, 1994)

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, 1968)

Plant life of Alabama : an account of the distribution, modes of association, and adaptations of the flora of Alabama, together with a systematic catalogue of the plants growing in the state - Mohr, Charles (Charles Theodore), 1824 -1901 (Brown Printing Co, 1901)

Plant life of Alabama, an account of the distribution, modes of association, and adaptations of the flora of Alabama, together with a systematic catalogue of the plants growing in the state - Mohr, Charles (Charles Theodore), 1824 -1901 (Brown printing co, 1901)

Plant life of Alabama. An account of the distribution, modes of association, and adaptations of the flora of Alabama, together with a systematic catalogue of the plants growing in the state. Prepared in cooperationwith the Geological Survey of Alabama - Mohr, Charles (Charles Theodore), 1824 -1901 (Govt. Print. Off, 1901)

The plant life of Hartsville, S.C - Coker, William Chambers, 1872 -1953 ([Pee Dee Historical Assn.], 1912)

The plant life of Maryland - Shreve, Forrest, 1878 -1950 (Johns Hopkins Press, 1910)

Plant lists : Texas - Lay, Daniel W., (1930)

Plant materials : 1924 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.V. Lawrence Inc, 1924)

Plant materials, 1925 : a catalogue of description and prices - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.V. Lawrence Inc, 1925)

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

Plant materials of decorative gardening; the woody plants - Trelease, William, 1857 -1945 (The author, 1917)

Plant morphogenesis - Sinnott, Edmund W. (Edmund Ware), 1888 -1958 (McGraw-Hill, 1960)

Plant physiology; a textbook for colleges and universities - Anderson, Donald Benton, 1899 - (D. Van Nostrand Company, inc, 1939)

The plant societies of Chicago and its vicinity - Cowles, Henry Chandler, 1869 -1939 (The Geographic Society of Chicago, 1901)

The Plant world - Plant World Association. (Plant World Association [etc.], 1909)

The Plant world - Plant World Association. (Plant World Association [etc.], 1912)

The Plant world - Plant World Association. (Plant World Association [etc.], 1916)

The Plant world - Plant World Association. (Plant World Association [etc.], 1917)

Plantes alpines & vivaces, 1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H. Correvon & Fils, 1933)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1945)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1947)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1960)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1964)

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

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1970)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1977)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1982)

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

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1992)

Plants for better gardens - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Littlefield-Wyman Nurseries, 1944)

Plants for better gardens - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Littlefield-Wyman Nurseries, 1945)

Plants for better gardens - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Littlefield-Wyman Nurseries, 1948)

Plants for better gardens - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Littlefield-Wyman Nurseries, 1947)

Plants for better gardens - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Littlefield-Wyman Nurseries, 1941)

Plants for better gardens - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Littlefield-Wyman Nurseries, 1942)

The plants of Michigan; simple keys for the identification of the native seed plants of the state - Gleason, Henry A. (Henry Allan), 1882 -1975 (G. Wahr, 1918)

Plants of Mississippi : a list of flowering plants and ferns - Lowe, E. N. (Ephraim Noble), 1864 -1933 (Mississippi State Geological Survey, 1921)

Plants of Monroe County, New York, and adjacent territory - Beckwith, Florence. (1896)

The plants of Prospect Park - Jelliffe, Smith Ely, 1866 -1945 (1890)

The plants of Southern New Jersey; with especial reference to the flora of the Pine Barrens and the geographic distribution of the species - Stone, Witmer. 1866 -1939 (1911)

The plants of Southern New Jersey with especial reference to the flora of the pine barrens and the geographic distribution of the species - Stone, Witmer. 1866 -1939 (1911)