History of Lancaster County : to which is prefixed a brief sketch of the early history of Pennsylvania - Rupp, I. Daniel (Israel Daniel), 1803 -1878 (Gilbert Hills, 1844)

A history of science - Williams, Henry Smith, 1863 -1943 (Harper, 1904)

History of systematic botany in Australasia : proceedings of a symposium held at the University of Melbourne, 25-27 May 1988 - Short, P. S. (Philip S.) (Australian Systematic Botany Society, 1990)

The history of the collections contained in the Natural history departments of the British museum... - British Museum (Natural History) (Printed by order of the Trustees, 1904)

History of Vermont, natural, civil and statistical, in three parts, with an appendix. 1853 - Thompson, Zadock, 1796 -1856 (The author, 1853)

Horae physicae Berolinenses :collectae ex symbolis virorum doctorum H. Linkii ... ; edicuravit Christianus Godof. Nees ab Esenbeck - Sturm, Jakob, 1771 -1848 (Adolphi Marcus, 1820)

Horticultural register, and gardener's magazine - Breck, Joseph, 1794 -1873 (G. D. Barrett [etc.], 1835)

Horticultural register, and gardener's magazine - Breck, Joseph, 1794 -1873 (G. D. Barrett [etc.], 1836)

Horticultural register, and gardener's magazine - Breck, Joseph, 1794 -1873 (G. D. Barrett [etc.], 1837)

Horticultural register, and gardener's magazine - Breck, Joseph, 1794 -1873 (G. D. Barrett [etc.], 1838)

The Horticultural register, and general magazine - Paxton, Joseph, Sir, 1803 -1865 (Baldwin and Cradock, 1831)

The Horticultural register, and general magazine - Paxton, Joseph, Sir, 1803 -1865 (Baldwin and Cradock, 1832)

The Horticultural register, and general magazine - Paxton, Joseph, Sir, 1803 -1865 (Baldwin and Cradock, 1833)

The Horticultural register, and general magazine - Paxton, Joseph, Sir, 1803 -1865 (Baldwin and Cradock, 1834)

The Horticultural register, and general magazine - Paxton, Joseph, Sir, 1803 -1865 (Baldwin and Cradock, 1835)

Horticulture - Pennsylvania Horticultural Society. (Horticulture Pub. Co, 1909)

Horticulture - Pennsylvania Horticultural Society. (Horticulture Pub. Co, 1910)

The Horticulturist and journal of rural art and rural taste (Luthur Tucker, 1867)

Hortus addlestonensis, or, A descriptive catalogue of plants, &c - Cree, John. (Printed for Hurst, Chance, and Co, 1829)

Hortus Anglicus; or, the modern English garden: containing a familiar description of all the plants which are cultivated in the climate of Great Britain, either for use or ornament, and of a selection from the established favourites of the stove and green-house; arranged according to the system of Linnaeus. With remarks on the properties of the more valuable species - Linné, Carl von, 1707 -1778 (Printed for F. C. & J. Rivington, 1822)

Hortus botanicus panormitanus :sive Plantae novae vel criticae quae in horto botanico panormitano coluntur - Todaro, Agostino, 1818 -1892 (Ex officina typograhica F. Lao, 1876)

Hortus cantabrigiensis : or, An accented catalogue of indigenous and exotic plants cultivated in the Cambridge Botanic Garden - Cambridge Botanic Garden. (Longman, 1845)

Hortus Spaarn-Bergensis : plantarum quas in villa sua Spaarn-Berg, prope Harlemum, colit Adrianus van der Hoop ... catalogus alter - Doornik, J. J. F. H. T. Merkus. (Ex Bibliopolio Joannis Müller, 1849)

Hortus suburbanus Londinensis, or, A catalogue of plants cultivated in the neighborhood of London : arranged according to the Linnean system, with the addition of the natural orders to which they belong, references to books where they are described, their native places of growth, when introduced, time of flowering, and reference to figures - Sweet, Robert, 1783 -1835 (Printed for James Ridgway, 1818)

Humboldt; Monatsschrift für die gesamten Naturwissenschaften - Damer, Otto, 1839 -1916 (F. Enke, 1887)

Icones Bogorienses - Kebun Raya Indonesia. (E. J. Brill, 1906)

Icones plantarum asiaticarum - Griffith, William, 1810 -1845 (Bishop's College Press, 1851)

Icones plantarum formosanarum nec non et contributiones ad floram formosanam : or, Icones of the plants of Formosa, and materials for a flora of the island, based on a study of the collections of the Botanical survey of the Government of Formosa - Taiwan. Shokusankyoku. (Bureau of Productive Industry, Government of Formosa, 1911)

Icones plantarum formosanarum nec non et contributiones ad floram formosanam; or, Icones of the plants of Formosa, and materials for a flora of the island, based on a study of the collections of the Botanical survey of the Government of Formosa - Hayata, Bunzō, 1874 -1934 (Pub. by the Bureau of Productive Industry, Government of Formosa, 1911)

Icones plantarum Formosanarum nec non et contributiones ad floram Formosanam; or, Icones of the plants of Formosa, and materials for a flora of the Island, based on a study of the collections of the Botanical Survey of the Government of Formosa - Hayata, Bunzō, 1874 -1934 (Published by the Bureau of Productive Industries, Government of Formosa, 1916)

Icones plantarum Indiae Orientalis :or figures of Indian plants - Wight, Robert, 1796 -1872 (published by J.B. Pharoah for the author, 1840)

Icones plantarum Indiae Orientalis :or figures of Indian plants - Wight, Robert, 1796 -1872 (published by J.B. Pharoah for the author, 1846)

Icones plantarum or figures, with brief descriptive characters and remarks, of new or rare plants, selected from the author's herbarium - Hooker, Joseph Dalton, 1817 -1911 (Longman, Rees, Orme, Brown, Green, & Longman, etc, 1837)

Icones plantarum or figures, with brief descriptive characters and remarks, of new or rare plants, selected from the author's herbarium - Hooker, Joseph Dalton, 1817 -1911 (Longman, Rees, Orme, Brown, Green, & Longman, etc, 1894)

Icones plantarum rariorum Horti Regii Botanici Berolinensis = Abbildungen seltener Pflanzen des königl. botanischen Gartens zu Berlin - Link, Heinrich Friedrich, 1767 -1851 (Veit, 1842)

Icones plantarum rariorum Horti Regii Botanici Berolinensis = Abbildungen seltener Pflanzen des königl. botanischen Gartens zu Berlin - Link, Heinrich Friedrich, 1767 -1851 (Veit, 1844)

Icones plantarum selectarum Horti Regii Botanici Berolinensis cum descriptionibus et colendi ratione - Link, Heinrich Friedrich, 1767 -1851 ([Decker], 1828)

Iconographia familiarum naturalium regni vegetabilis = Abbildungen der natürlichen Familien des Gewächsreiches : delineata atque adiectis familiarum characteribus adnotationibusque variis tum scientiam tum usum spectantibus exornata - Schnizlein, Adalbert, 1814 -1868 (M. Cohen, 1843)

Iconum botanicarum index locupletissimus = Die Abbildungen sichtbar blühender Pflanzen und Farnkräuter : aus der botanischen und Gartenliteratur des XVIII. und XIX. Jahrhunderts in alphabetischer Folge zusammengestellt - Pritzel, G. A. (Georg August), 1815 -1874 (In Libraria F. Nicolai, 1855)

Iconum botanicarum index locupletissimus. Verzeichniss der Abbildungen sichtbar blühender Pflanzen und Farnkräuter aus der botanischen und Gartenliteratur des XVIII. und XIX. Jahrhunderts in alphabetischer Folge zusammengestellt - Pritzel, G. A. (Georg August), 1815 -1874 (Nicolaische Verlagsbuchh, 1866)

The illustrated dictionary of gardening, a practical and scientific encyclopedia of horticulture for gardeners and botanists - Nicholson, George, 1847 -1908 (L. U. Gill, 1884)

An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian - Britton, Nathaniel Lord, 1859 -1934 (C. Scribner's sons, 1913)

An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian - Britton, Nathaniel Lord, 1859 -1934 (C. Scribner's sons, 1913)

An illustrated flora of the Pacific States: Washington, Oregon, and California - Abrams, Le Roy, 1874 -1956 (Stanford University Press, 1923)

The illustration horticole : an illustrated monthly review of new and interesting plants with their descriptions, history and culture - Linden, Jean Jules, 1817 -1898 (J. Linden, 1874)

The illustration horticole : an illustrated monthly review of new and interesting plants with their descriptions, history and culture - Linden, Jean Jules, 1817 -1898 (J. Linden, 1875)

Illustrations of Indian botany :or figures illustrative of each of the natural orders of Indian plants, described in the author's prodromus florae peninsulae Indiae orientalis - Wight, Robert, 1796 -1872 (published by J. B. Pharoah for the author, 1840)

Illustrations of Orchidaceous Plants [from sketches prepared between 1792 and 1832] - Lindley, John, 1799 -1865 (James Ridgeway and Sons, 1830)

Illustrirte Garten-Zeitung - Müller, Karl, 1818 -1899 (E. Schweizerbart, 1860)

Illustrirte Garten-Zeitung - Müller, Karl, 1818 -1899 (E. Schweizerbart, 1861)

Illustrirte Garten-Zeitung - Müller, Karl, 1818 -1899 (E. Schweizerbart, 1864)

Illustrirte Garten-Zeitung - Müller, Karl, 1818 -1899 (E. Schweizerbart, 1865)

Illustrirte Garten-Zeitung - Müller, Karl, 1818 -1899 (E. Schweizerbart, 1866)

Illustrirte Garten-Zeitung - Müller, Karl, 1818 -1899 (E. Schweizerbart, 1867)

Illustrirte Garten-Zeitung - Müller, Karl, 1818 -1899 (E. Schweizerbart, 1868)

Illustrirte Garten-Zeitung - Müller, Karl, 1818 -1899 (E. Schweizerbart, 1869)

Incrementa florae phaenogamae Rossicae - Trautvetter, Ernst Rudolph von, 1809 -1889 ([s.l.], 1882)

Index generum phanerogamorum usque ad finem anni 1887 promulgatorum in Benthami et Hookeri "Genera plantarum" fundatus, cum numero specierum synonymis et area geographica - Bentham, George, 1800 -1884 (Sumptibus auctoris, 1888)

Index Kewensis. names of seed-bearing plants at the rank of family and below published between January 1976 and the end of 1980 with some omissions from earlier years. Supplement seventeen - Royal Botanic Gardens, Kew. (Clarendon Press, 1901)

Index Kewensis plantarum phanerogamarum : nomina et synonym omnium generum et specierum a linnaeo usque as annum MDCCLXXXV complectans nomine recepro auctore patria unicuique planta subjectis : sumptibus beati Caroli Roberti Darwin ductu et consilio Josephi D. Hooker. Tomus 1-2 = Index Kewensis : an enumeration of the genera and species of flowering plants from the time of Linnaeus to the year 1885 inclusive together with their authors names, the works in which they were first published, their native countries and thei - Hooker, Joseph Dalton, 1817 -1911 (Clarendon Press, 1893)