Hortus Kewensis, or, A catalogue of the plants cultivated in the Royal Botanic Garden at Kew - Ehret, Georg Dionysius, 1708 -1770 (Printed for George Nicol, Bookseller to his Majesty, 1789)

Hortus Marybonensis, or, A catalogue of hardy herbaceous plants, deciduous & evergreen shrubs, forest & fruit trees, to which is added, a list of aquatic and bog plants - Jenkins, Thomas. (Printed for and sold by the proprietor, 1819)

Hortus medicus Edinburgensis, or, A catalogue of the plants in the Physical Garden at Edinburgh : containing their most proper Latin and English names; with an English alphabetical index - Sutherland, James (printed by the heir of Andrew Anderson, and to be sold by Mr. Henry Ferguson seed-merchant, at the head of Black Friar-Wynd, and at the Physical Garden by the author, 1683)

Hortus Romanus juxta systema Tournefortianum - Tournefort, Joseph Pitton de, 1656 -1708 (Sumptibus Bouchard et Gravier ex typographia Pauli Junchi, 1784)

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)

Hortus woburnensis; a descriptive catalogue of upwards of six thousand ornamental plants cultivated at Woburn Abbey ... - Bedford, John Russell, Duke of, 1766 -1839 (J. Ridgway, 1833)

Icones orchidearum austro-africanarum extra-tropicarum : or figures, with descriptions, of extra-tropical South African orchids - Bolus, Harry, 1834 -1911 (W. Wesley, 1913)

Icones plantarum medico-oeconomico-technologicarum cum earum fructus ususque descriptione =Abbildungen aller medizinisch-ökonomisch-technologischen Gewächse mit der Beschreibung ihres Gebrauches und Nutzens - Albrecht, Ignatz. (herausgegeben von Ignatz Albrecht und verlegt bey Phil. Jos. Schalbaecher, 1804)

Icones stirpium, seu, Plantarum tam exoticarum, quam indigenarum :in gratiam rei herbariae studiosorum in duas partes digestae : cum septem linguarum indicibus, ad diuersarum nationum vsum - Moretus, Jan 1543 -1610 (Ex officina plantiniana :Apud Viduam et Ioannem Moretum, 1591)

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)

Iconographia floræ italicæ : ossia, Flora italiana illustrata ... - Crépin, François, 1830 -1903 (Tip. del seminario, 1895)

Iconographie des orchidées d'Europe et du bassin Méditerranéen - Lecomte, Henri, 1856 -1934 (P. Lechavalier, 1921)

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)

Ideen zu einer Geographie der Pflanzen : nebst einem Naturgemälde der Tropenländer : auf Beobachtungen und Messungen gegründet, welche vom 10ten Grade nördlicher bis zum 10ten Grade südlicher Breite, in den Jahren 1799, 1800, 1801, 1802 und 1803 angestellt worden sind - Humboldt, Alexander von, 1769 -1859 (Bey F.G. Cotta, 1807)

Les îles Canaries. Flore de l'archipel - Proust, Louis, 1878 -1959 (P. Klincksieck, 1908)

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

The Illustrated dictionary of gardening : a practical and scientific encyclopaedia of horticulture for gardeners and botanists - Nicholson, George, 1847 -1908 (L. Upcott Gill, 1887)

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 northern United States, Canada and the British possesions from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102d meridian. Vol. 3, Apocynaceae to Compositae, dogbane to thistle - Britton, Nathaniel Lord, 1859 -1934 (C. Scribner, 1896)

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, 1896)

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, 1913)

An illustrated flora of the northern United States, Canada and the British possesions from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102d meridian. Vol. 3, Apocynaceae to Compositae, dogbane to thistle - Britton, Nathaniel Lord, 1859 -1934 (C. Scribner, 1898)

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

An illustrated guide to the flowering plants of the middle Atlantic and New England states (excepting the grasses and sedges) the descriptive text written in familiar language - Stevens, George T. (George Thomas), 1832 -1921 (Dodd, Mead and company, 1910)

Illustratio in hortum siccum Andreae Caesalpini - Caruel, Teodoro, 1830 -1898 ([Typis Le Monnier], 1858)

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)

L'Illustration horticole : journal spécial des serres et des jardins, ou choix raisonné des plantes les plus intérressantes sous le rapport ornemental, comprenant leur histoire complete, leur description comparée, leur figure et leur culture - Lemaire, Charles Antoine, 1801 -1871 (Imprimerie et lithographie de F. et E. Gyselnyck, 1874)

L'Illustration horticole : journal spécial des serres et des jardins, ou choix raisonné des plantes les plus intérressantes sous le rapport ornemental, comprenant leur histoire complete, leur description comparée, leur figure et leur culture - Lemaire, Charles Antoine, 1801 -1871 (Imprimerie et lithographie de F. et E. Gyselnyck, 1876)

L'Illustration horticole : journal spécial des serres et des jardins, ou choix raisonné des plantes les plus intérressantes sous le rapport ornemental, comprenant leur histoire complete, leur description comparée, leur figure et leur culture - Lemaire, Charles Antoine, 1801 -1871 (Imprimerie et lithographie de F. et E. Gyselnyck, 1893)

Illustrierte Flora von Nord- und Mittel-Deutschland, mit einer Einführung in die Botanik - Potonié, H. (Henry), 1857 -1913 (J. Springer, 1889)

Illustrirte Garten-Zeitung - Müller, Karl, 1818 -1899 (E. Schweizerbart, 1873)

In Codicem botanicum linnaeanum index alphabeticus : generum, specierum ac synonymorum omnium completissimus - Linné, Carl von, 1707 -1778 (O. Wigand, 1840)

In hoc volumine continentur Valerii Cordi ... Annotationes in Pedacii Dioscoridis Anazarbei De medica materia libros V : longè aliae quàm ante hac sunt evulgatae. Ejusdem Val. Cordi Historiae stirpium Lib. IIII. posthumi, nunc primùm in lucem editi, adjectis etiam stirpium iconibus, & brevissimus annotatiunculis. Sylva, qua rerum fossilium in Germania plurimarum, metallorum, lapidum & stirpium aliquot rariorum notitiam brevissimè persequitur, nunquam hactenus visa. De artificiosis extractionibus liber. Compositiones medicinales aliquot, non vulgares. His accedunt Stocc-Hornii et Nessi in Bernatium Helvetiorum ditione montium, & nascentium in eis stirpium, descriptio Benedicti Aretii ... Item Conradi Gesneri De hortus Germaniae, liber recens, unà cum descriptione tulipae turcarum, chamaecerasi montani, chamaemespili, chamaenerii, & conozoidis ... Omnia summa studio atque industria ... Conr. Gesneri ... collecta, & praefationibus illustrata - Aretius, Benedictus, 1574 (Excudebat Iosias Rihelius, 1561)

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

Index alphabeticus generum botanicorum quotquot a Willdenovio in Speciebus plantarum et a Persoonio in Synopsi plantarum recensentur - Lichtenstein, A. G. G. (August Gerhard Gottfried), 1780 -1851 (Leuckartiorum patris et filii, 1814)

Index bibliographique de l'Hortus Belgicus : Catalogue méthodique des plantes ornementales qui ont été décrites, figurées ou introduites en Belgique de 1830 à 1880 - Morren, Édouard, 1833 -1886 (1887)

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. Supplement twenty one, Names of seed-bearing plants at the rank of family and below published between January 1996 and the end of 2000 with some omissions from earlier years - Royal Botanic Gardens, Kew. (Royal Botanic Gardens, Kew, 1901)

Index Kewensis. names of seed-bearing plants at the rank of family and below published between January 1986 and the end of 1990 with some omissions from earlier years. Supplement nineteen - Royal Botanic Gardens, Kew. (1901)

Index Kewensis. names of seed-bearing plants at the rank of family and below published between January 1991 and the end of 1995 with some omissions from earlier years. Supplement twenty - Royal Botanic Gardens, Kew. (Royal Botanic Gardens, Kew, 1901)

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. names of seed-bearing plants at the rank of family and below published between January 1981 and the end of 1985 with some omissions from earlier years. Supplement eighteen - 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)

Index Kewensis plantarum phanerogamarum. nomina et synonyma omnium generum et specierum ab initio anni MDCCCCXXXVI usque ad finem anni MDCCCCXL nonnulla etiam antea edita complectens. Supplementum decimum - Royal Botanic Gardens, Kew. (e prelo Clarendoniano, 1901)

Index Kewensis plantarum phanerogamarum. nomina et synonyma omnium generum et specierum ab initio anni MDCCCCVI usque ad finem anni MDCCCCX complectens. Supplementum quartum - Royal Botanic Gardens, Kew. (e prelo Clarendoniano, 1913)

Index Kewensis plantarum phanerogamarum. nomina et synonyma omnium generum et specierum ab initio anni MDCCCCXXVI usque ad finem anni MDCCCCXXX complectens. Supplementum octavum - Royal Botanic Gardens, Kew. (e prelo Clarendoniano, 1901)

Index Kewensis plantarum phanerogamarum. nomina et synonyma omnium generum et specierum ab initio anni MDCCCCXI usque ad finem anni MDCCCCXV complectens. Supplementum quintum - Royal Botanic Gardens, Kew. (e prelo Clarendoniano, 1901)

Index Kewensis plantarum phanerogamarum. nomina et synonyma omnium generum et specierum ab initio anni MDCCCCI usque ad finem anni MDCCCCV complectens. Supplementum tertium - Royal Botanic Gardens, Kew. (e prelo Clarendoniano, 1901)

Index Kewensis plantarum phanerogamarum. nomina et synonyma omnium generum et specierum ab initio anni MDCCCCXXI usque ad finem anni MDCCCCXXV complectens. Supplementum septimum - Royal Botanic Gardens, Kew. (e prelo Clarendoniano, 1901)