Abarema Pittier, 1927 (basis of record)
Abatia Ruiz & Pavón, 1794 (basis of record)
Abdulmajidia T.C. Whitmore, 1974 (basis of record)
Abelia R. Brown in Abel, 1818 (basis of record)
Abeliophyllum Nakai, 1919 (basis of record)
Abelmoschus Medikus, 1787 (basis of record)
Abolboda Humboldt in Humboldt & Bonpland, 1813 (basis of record)
Abroma N.J. Jacquin, 1776 (basis of record)
Abromeitiella Mez, 1927 accepted as Deuterocohnia Mez in C.F.P. Martius, 1894 (basis of record)
Abronia A.L. Jussieu, 1789 (basis of record)
Abrophyllum J.D. Hooker ex Bentham, 1864 (basis of record)
Abrus Adanson, 1763 (basis of record)
Absolmsia O. Kuntze, 1891 accepted as Hoya R. Brown, 1810 (basis of record)
Abuta Aublet, 1775 (basis of record)
Abutilon P. Miller, 1754 (basis of record)
Acacia P. Miller, 1754 (basis of record)
Acaena Mutis ex Linnaeus, 1771 (basis of record)
Acalypha Linnaeus, 1753 (basis of record)
Acanthocalyx (A.P. de Candolle) Van Tieghem, 1909 (basis of record)
Acanthocarpus J.G.C. Lehmann, 1848 (basis of record)
Acanthocereus N.L. Britton & J.N. Rose, 1909 (basis of record)
Acanthochlamys P.C. Kao, 1980 (basis of record)
Acanthogilia A.G. Day & R. Moran, 1986 (basis of record)
Acantholepis Lessing, 1831 accepted as Echinops Linnaeus, 1753 (basis of record)
Acantholimon Boissier, 1846 (basis of record)
Acantholippia Grisebach, 1874 (basis of record)
Acanthophyllum C.A. Meyer, 1831 (basis of record)
Acanthosicyos Welwitsch ex Bentham & J.D. Hooker, 1867 (basis of record)
Acanthostachys Klotzsch in Link, Klotzsch & Otto, 1840 (basis of record)
Acanthosyris (Eichler) Grisebach, 1879 (basis of record)
Acanthothamnus T.S. Brandegee, 1909 (basis of record)
Acanthus Linnaeus, 1753 (basis of record)
Acareosperma Gagnepain, 1919 (basis of record)
Acca O.C. Berg, 1856 (basis of record)
Acer Linnaeus, 1753 (basis of record)
Aceranthus C. Morren & Decaisne, 1834 accepted as Epimedium Linnaeus, 1753 (basis of record)
Aceratium A.P. de Candolle, 1824 (basis of record)
Acharia Thunberg, 1794 (basis of record)
Achatocarpus Triana, 1858 (basis of record)
Achillea Linnaeus, 1753 (basis of record)
Achimenes Persoon, 1806 (basis of record)
Achlyphila Maguire & Wurdack, 1960 (basis of record)
Achlys A.P. de Candolle, 1821 (basis of record)
Achyranthes Linnaeus, 1753 (basis of record)
Acicarpha A.L. Jussieu, 1803 (basis of record)
Acidocroton Grisebach, 1859 (basis of record)
Acinos P. Miller, 1754 (basis of record)
Acioa Aublet, 1775 (basis of record)
Acleisanthes A. Gray, 1853 (basis of record)
Acmanthera (A.H.L. Jussieu) Grisebach in C.F.P. Martius, 1858 (basis of record)
Acmena A.P. de Candolle, 1828 accepted as Syzygium J. Gaertner, 1788 (basis of record)
Aconitella Spach, 1839 accepted as Delphinium Linnaeus, 1753 (extant flag source)
Aconitella Spach, 1839 accepted as Delphinium Linnaeus, 1753 (basis of record)
Aconitum Linnaeus, 1753 (basis of record)
Acopanea J.A. Steyermark, 1984 accepted as Bonnetia C.F.P. Martius, 1826 (basis of record)
Acorus Linnaeus, 1753 (basis of record)
Acranthera Arnott ex C.F. Meisner, 1838 (basis of record)
Acridocarpus Guillemin & Perrottet in Guillemin, Perrottet & A. Richard, 1831 (basis of record)
Acroglochin Schrader in J.A. Schultes, 1822 (basis of record)
Acronychia J.R. Forster & J.G.A. Forster, 1775 (basis of record)
Acrophyllum Bentham in Maund, 1838 (basis of record)
Acropogon Schlechter, 1906 (basis of record)
Acroptilon Cassini in F. Cuvier, 1827 accepted as Rhaponticum S. Vaillant, 1754 (basis of record)
Acrosanthes Ecklon & Zeyher, 1837 (basis of record)
Acrotrema W. Jack, 1820 (basis of record)
Acrymia D. Prain, 1908 (basis of record)
Acsmithia R.D. Hoogland, 1979 (basis of record)
Actaea Linnaeus, 1753 (basis of record)
Actinidia J. Lindley, 1836 (basis of record)
Actinodaphne C.G.D. Nees in Wallich, 1831 (basis of record)
Actinolema Fenzl, 1842 (basis of record)
Actinotus Labillardière, 1805 (basis of record)
Adansonia Linnaeus, 1753 (basis of record)
Adelia Linnaeus, 1759 (basis of record)
Adelobotrys A.P. de Candolle, 1828 (basis of record)
Adelosa Blume, 1850 (?) accepted as Clerodendrum Linnaeus, 1753 (basis of record)
Adelostemma J.D. Hooker, 1883 (basis of record)
Adelostigma Steetz in Peters, 1864 (basis of record)
Adenanthera Linnaeus, 1753 (basis of record)
Adenanthos Labillardière, 1805 (basis of record)
Adenarake Maguire & Wurdack, 1961 (basis of record)
Adenaria Kunth in Humboldt, Bonpland & Kunth, 1823 (basis of record)
Adenia Forsskål, 1775 (basis of record)
Adenium J.J. Roemer & J.A. Schultes, 1819 (basis of record)
Adenoa M.M. Arbo, 1977 (basis of record)
Adenocalymma C.F.P. Martius ex C.F. Meisner, 1840 (basis of record)
Adenocarpus A.P. de Candolle in Lamarck & A.P. de Candolle, 1815 (basis of record)
Adenocline Turczaninow, 1843 (basis of record)
Adenogramma H.G.L. Reichenbach, 1828 (basis of record)
Adenophora F.E.L. Fischer, 1823 (basis of record)
Adenosma R. Brown, 1810 (basis of record)
Adenostemma J.R. Forster & J.G.A. Forster, 1775 (basis of record)
Adenostoma W.J. Hooker & Arnott, 1832 (basis of record)
Adenostyles Cassini in F. Cuvier, 1816 (basis of record)
Adesmia A.P. de Candolle, 1825 (basis of record)
Adina R.A. Salisbury, 1808 (basis of record)
Adinandra W. Jack, 1822 (basis of record)
Adlumia Rafinesque ex A.P. de Candolle, 1821 (basis of record)
Adonis Linnaeus, 1753 (basis of record)
Adoxa Linnaeus, 1753 (basis of record)