1680:(A)
previous:1654
Fertile stamens as many as the corolla-lobes.
next:1681

1680:(B)
Fertile stamens more than the corolla-lobes.
next:1859

1681:(A)
previous:N
previous:1680
Stamens alternipetalous.
next:1682

1681:(B)
Stamens epipetalous.
next:1839

1682:(A)
previous:1681
Style either 1, or 1 per ovary when ovaries free, simple with 1 or 2-more stigmas adjacent at base, or absent and stigma 1, sessile.
next:1683

1682:(B)
Styles 2 -more, free or connate at base but not up to the stigmas, or connate at the apex only, or stigmas 2-more, sessile. Ovaries when apparently free with common styles or stigmas.
next:1812

1683:(A)
previous:1682
Ovary 1, 1-locular, sometimes incompletely so.
next:1684

1683:(B)
Ovary 1, 2-more-locular or nearly so, or ovaries 2-more, free.
next:1711

1684:(A)
previous:1683
Ovule 1.
next:1685

1684:(B)
Ovules 2 -more.
next:1688

1685:(A)
previous:1684
Ovule basal.
next:1686

1685:(B)
Ovule apical. Stipules absent. Flowers 5-merous.
next:1687

1686:(A)
previous:1685
Woody plants. Leaves opposite. Stipules minute. Flowers 4-merous. Corolla imbricate.

1686:(B)
Herbs. Leaves radical. Stipules absent. Flowers 5-merous. Corolla valvate. Flowers in a capitule, almost actinomorphic. Anthers connate. Stigma with a cup-shaped involucre. Australia.

1687:(A)
previous:1685
Ericoid shrubs. Leaves fan-nerved, white underneath, less than 2,5 cm long. Anthers with 1 longitudinal slit. Leaves alternate. Australia. (Monotoca)

1687:(B)
Shrubs, sometimes climbing with tendrils. Leaves pinninerved, not conspicuously white underneath and larger. Anthers with 2 longitudinal slits. N.W. S. America. (Metteniusa, also in Icacinaceae, in Opiliaceae as Aveledoa)

1688:(A)
previous:1684
Ovules 2 or 3.
next:1689

1688:(B)
Ovules 4 -more.
next:1696

1689:(A)
previous:1688
Ovules 3. Woody plants. Leaves alternate. Corolla 5-partite, valvate.
next:1690

1689:(B)
Ovules 2.
next:1691

1690:(A)
previous:1689
Flowers in racemes. Filaments connate at base. Fruit a drupe.

1690:(B)
Flowers solitary, also from the axils of fallen leaves. Filaments inserted on the corolla. Fruit a berry. Mexico. (Goetzeaceae: Lithophytum)
Goetzeaceae
1691:(A)
previous:1689
Leaves simple, undivided, or lobed. Stipules absent. Calyx apert or imbricate.
next:1692

1691:(B)
Leaves pinnately compound, rarely reduced to the petiole or absent, then stipules present.
next:1695

1692:(A)
previous:1691
Woody plants or twining herbs. Corolla valvate or imbricate. Ovules pendulous. Fruit indehiscent.
next:1693

1692:(B)
Herbs, usually climbing with tendrils or prostrate. Corolla plicate. Ovules erect.

1693:(A)
previous:1692
Erect plants, rarely climbing. Bark without white juice.
next:1694

1693:(B)
Herbaceous climbers with abundant white juice. Stipules absent. Inflorescence cymose, cincinnoid. Calyx and corolla imbricate. Ovules apical, pendulous. Fruit dry, indehiscent, winged. S.E. Asia to Australia.

1694:(A)
previous:1693
Ovules pendulous. Erect plants, rarely climbing.

1694:(B)
Ovules basal. Erect shrubs. Mexico. (Goetzeaceae: Lithophytum)
Goetzeaceae
1695:(A)
previous:1691
Stipules usually present. Flowers in spikes or in capitules. Calyx and corolla valvate. Ovules serial. Placenta 1, parietal. Fruit a dehiscent pod. Leaves rarely reduced to the petiole or absent.

1695:(B)
Stipules absent. Flowers in a panicle. Aestivation various. Ovules not serial on 1 placenta. Fruit a berry. Petals connate at base only. Filaments nearly completely connate.

1696:(A)
previous:1688
Ovules 4.
next:1697

1696:(B)
Ovules 5 -more.
next:1701

1697:(A)
previous:1696
Leaves alternate. Ovules basal.
next:1698

1697:(B)
Leaves opposite or in whorls. Corolla imbricate.
next:1700

1698:(A)
previous:1697
Plants not cushion-forming. Leaves well developed, distant. Sepals 5. Disk present.
next:1699

1698:(B)
Cushion-forming perennials with densely imbricate, small leaves. Sepals 2. Corolla valvate. Disk absent. New Zealand. (Hectorella)

1699:(A)
previous:1698
Plants usually climbing with tendrils. Corolla induplicative-plicate.

1699:(B)
Plants erect. Corolla valvate. Mexico. (Goetzeaceae: Lithophytum)
Goetzeaceae
1700:(A)
previous:1697
Sepals connate. Endosperm absent. (incl. Avicenniaceae, Symphoremataceae)
Symphoremataceae Avicenniaceae
1700:(B)
Sepals free. Endosperm usually present. Woody plants. Flowers 5-merous. Fruit a capsule.

1701:(A)
previous:1696
Ovules basal or central.
next:1702

1701:(B)
Ovules parietal.
next:1705

1702:(A)
previous:1701
Corolla valvate 1.
next:1703

1702:(B)
Corolla imbricate.
next:1704

1703:(A)
previous:1702
Woody plants. Leaves well developed, distant, opposite. Calyx 4- or 5-merous. Fruit a berry. (Strychnaceae: Strychnos)
Strychnaceae
1703:(B)
Cushion-forming perennials with densely imbricate, small leaves. Sepals 2. Fruit a capsule. New Zealand. (Hectorella)

1704:(A)
previous:1702
Woody plants. Stipules absent. Fruit a drupe.

1704:(B)
Herbs. Stipules present. Fruit a capsule. Sepals free. Endosperm present. Embryo curved.

1705:(A)
previous:1701
Placentas 2-more.
next:1706

1705:(B)
Placenta 1. Leaves alternate, pinnately compound, rarely reduced to a broadened petiole or absent. Stipules usually present. Corolla valvate. (Mimosoideae)

1706:(A)
previous:1705
Leaves simple, rarely digitately compound.
next:1707

1706:(B)
Leaves pinnately compound. Woody plants. Leaves usually alternate. Stipules absent. Corolla valvate. Filaments nearly completely connate. Ovary initially 4- or 5-locular.

1707:(A)
previous:1706
Apex of the style stigmatic on the lower or outer side of a thickened part, summit glabrous. Woody plants. Latex present. Flowers 5-merous.

1707:(B)
Stigma apical on the style, or up to it, or between its lobes. Latex absent.
next:1708

1708:(A)
previous:1707
Corolla valvate. Endosperm present.
next:1709

1708:(B)
Corolla imbricate or contort.
next:1710

1709:(A)
previous:1708
Shrubs or trees. Leaves opposite. (Strychnaceae: Strychnos)
Strychnaceae
1709:(B)
Herbs. Leaves radical or alternate. (Menyanthaceae)
Menyanthaceae
1710:(A)
previous:1708
Corolla contort, rarely imbricate. Fruit a septicide capsule or a berry. Endosperm present. Sap bitter.

1710:(B)
Corolla imbricate, Fruit a loculicide capsule. Endosperm absent. Herbs or shrublets. Leaves usually radical.