1784:(A)
previous:1759
Ovary 4-locular, or ovaries 4, free.
next:1785

1784:(B)
Ovary 5-more-locular, or ovaries 5-more, free.
next:1786

1785:(A)
previous:1784
Style stigmatic at the apex or between the apical lobes.
next:1788

1785:(B)
Styles stigmatic below the apex, usually free at base. Tropical Africa. (Pleiocarpa)

1786:(A)
previous:1784
Leaves compound.
next:1787

1786:(B)
Leaves simple.
next:1802

1787:(A)
previous:1786
Leaves digitately 3-foliolate, translucent glandular punctate. Filaments free.

1787:(B)
Leaves pinnately compound, not translucent glandular punctate. Filaments nearly completely connate.

1788:(A)
previous:1785
Ovules 1 or 2 per locule, rarely more, then corolla imbricate, not plicate.
next:1789

1788:(B)
Ovules many per locule. Corolla plicate or valvate. Leaves alternate or in pairs but not opposite. Sepals connate. Anthers with 2 longitudinal slits or apical pores.

1789:(A)
previous:1788
Anthers with 2 longitudinal slits; thecae rarely apically confluent.
next:1790

1789:(B)
Anthers with 1 longitudinal slit. Woody plants. Sepals free.

1790:(A)
previous:1789
Leaves opposite or in whorls, exceptionally alternate, then leaves simple, flowers solitary, axillary, corolla with a distinct tube, 4-merous, stigmas 2, fruit a drupe.
next:1791

1790:(B)
Leaves alternate, at least the upper, or all radical.
next:1795

1791:(A)
previous:1790
Ovary undivided or shallowly lobed.
next:1792

1791:(B)
Ovary deeply divided. Ovule 1 per locule.
next:1793

1792:(A)
previous:1791
Ovule 1 per locule. (Endosperm present: Dicrastylidaceae Physopsideae) (incl. Avicenniaceae)
Avicenniaceae Dicrastylidaceae
1792:(B)
Ovules many per locule. (Potaliaceae: Anthocleista, Potalia; Buddlejaceae: Buddleja)
Buddlejaceae Potaliaceae
1793:(A)
previous:1791
Flowers 5-merous, in cincinni. Calyx divided. Stigma 1.

1793:(B)
Flowers 4-merous, solitary or in false whorls or in panicles.
next:1794

1794:(A)
previous:1793
Flowers solitary. Ovule erect, atropous. Creeping herbs, rooting at the nodes. New Zealand, Patagonia. (Tetrachondraceae also in Labiatae, Scrophulariaceae)
Tetrachondraceae
1794:(B)
Flowers in false whorls or in panicles. Ovule anatropous, erect, apotropous.

1795:(A)
previous:1790
Leaves simple.
next:1796

1795:(B)
Leaves pinnately compound. Woody plants. Filaments nearly completely connate.

1796:(A)
previous:1795
Petals connate into a distinct tube, which is rarely very short, then either stem herbaceous, or anthers connate, or ovules many.
next:1797

1796:(B)
Petals only slightly connate at base. Stem woody. Anthers free. Corolla imbricate. Disk absent. Ovary undivided. Ovules 1 or 2 per locule. Fruit a drupe or a berry.

1797:(A)
previous:1796
Flowers 5-merous, very rarely 4-merous, then stem woody, disk present, and fruit a drupe.
next:1798

1797:(B)
Flowers 4-merous. Stem herbaceous or woody at base only. Flowers in spikes or in capitules, rarely solitary, terminal. Calyx divided. Corolla imbricate. Disk absent. Stigma 1. Fruit dehiscing with a lid. Embryo straight or nearly so, radicle pointing down.

1798:(A)
previous:1797
Ovules 1-3 per locule.
next:1799

1798:(B)
Ovules many per locule.
next:1801

1799:(A)
previous:1798
Corolla imbricate or contort, not plicate.
next:1800

1799:(B)
Corolla valvate or plicate. Ovules 1 or 2 per locule. Micropyle and radicle pointing down. Embryo curved or plicate.

1800:(A)
previous:1799
Style terminal. Ovules 2 or 3 per locule, apotropous. Fruit a berry or a capsule.

1800:(B)
Style usually gynobasic, rarely terminal, then plants woody, tropical, ovule 1 per locule, and fruit a drupe (Ehretiaceae: Lepidocordia, Rotula) Ovules 1 or 2 per locule, epitropous. Fruit a drupe or a schizocarp.
Ehretiaceae
1801:(A)
previous:1798
Flowers in terminal racemes. Bracts saccate, brightly coloured. Tropical America.

1801:(B)
Flowers solitary or in axillary racemes. Bracts not so.

1802:(A)
previous:1786
Corolla with a distinct tube.
next:1803

1802:(B)
Petals only slightly connate at base. Shrubs or trees. Sepals connate. Corolla imbricate. Anthers with 2 longitudinal slits. Disk absent. Ovary undivided. Ovules 1 or 2 per locule. Fruit a drupe or a berry. Embryo straight.

1803:(A)
previous:1802
Corolla valvate or imbricate, not plicate.
next:1804

1803:(B)
Corolla plicate. Flowers solitary. Sepals connate. Anthers with 2 longitudinal slits. Fruit a schizocarp. Embryo curved. W. S. America.

1804:(A)
previous:1803
Plants autotrophic with green leaves. Ovary 5 - 10-locular.
next:1805

1804:(B)
Parasitic herbs. Leaves scale-like, brown. Ovary 12-28-locular. Flowers in spikes, or in capitules, or in panicles. Sepals free. Corolla imbricate. Disk absent. Anthers with 2 longitudinal slits. Ovule 1 per locule. S.W. U.S., Mexico.

1805:(A)
previous:1804
Anthers with 1 transverse or 2 longitudinal slits.
next:1806

1805:(B)
Anthers with 1 longitudinal slit. Leaves alternate, rarely opposite, then ovule 1 per locule. Sepals free or nearly so. Disk usually present.

1806:(A)
previous:1805
Anthers with 2 longitudinal not confluent slits.
next:1807

1806:(B)
Anthers with 1 transverse or 2 confluent slits. Woody plants. Leaves alternate. Sepals connate. Ovary simple. Ovule 1 per locule.

1807:(A)
previous:1806
Leaves alternate.
next:1808

1807:(B)
Leaves opposite. Woody plants. Sepals connate.
next:1810

1808:(A)
previous:1807
Sepals connate. Ovules 1 or 2 per locule.
next:1809

1808:(B)
Sepals free. Ovules many per locule. Bracts saccate, brightly coloured. Ovary undivided, 5- or 6-locular. Tropical America.

1809:(A)
previous:1808
Herbs. Leaves not translucent-glandular-punctate. Ovary 10-locular. Ovule 1 per locule.

1809:(B)
Woody plants. Leaves translucent-glandular-punctate. Ovary 5-partite. Ovules 2 per locule.

1810:(A)
previous:1807
Ovules 1 or 2 per locule or free ovary.
next:1811

1810:(B)
Ovules many per locule. Leaves spinous. Ovary undivided, 5-locular at base, 1-locular at the apex. Andes. (Potaliaceae: Desfontainia)
Potaliaceae
1811:(A)
previous:1810
Ovary undivided.

1811:(B)
Ovaries 5, free. Tropical Africa. (Pleiocarpa)