1711:(A)
previous:1683
Ovary 2-locular, or ovaries 2, free.
next:1712

1711:(B)
Ovary 3-more-locular, or ovaries 3-more, free.
next:1759

1712:(A)
previous:1711
Ovule 1 per locule or free ovary.
next:1713

1712:(B)
Ovules 2-more per locule or free ovary.
next:1725

1713:(A)
previous:1712
Leaves simple, sometimes dissected.
next:1714

1713:(B)
Leaves pinnately compound. Woody plants. Filaments nearly completely connate.

1714:(A)
previous:1713
Leaves all, or only the upper opposite. Style apically stigmatic.
next:1715

1714:(B)
Leaves all, or only the upper alternate, or all radical.
next:1719

1715:(A)
previous:1714
Stipules absent or reduced to an interpetiolary line.
next:1716

1715:(B)
Stipules present. Stem woody. Leaves undivided. Calyx shallowly lobed. Corolla valvate. Disk absent. Stigmas 2. Ovules erect. Fruit a drupe. Endosperm present.

1716:(A)
previous:1715
Corolla imbricate. Ovule basal, or apical, or axillary, then plant herbaceous or ovule campylotropous. Fruit a drupe, or a schizocarp, or a capsule.
next:1717

1716:(B)
Corolla valvate. Ovule axillary, hemitropous. Fruit a berry. Woody plants. Flowers in cymose panicles. Endosperm present. (incl. Strychnaceae)
Strychnaceae
1717:(A)
previous:1716
Fruit a 2-valved capsule, or a drupe, or a schizocarp. Endosperm absent. Corolla coloured.
next:1718

1717:(B)
Fruit a capsule with a lid. Endosperm present. Herbs. Flowers in spikes or capitules. Corolla membranous. Stigma undivided. Ovule axillary, hemitropous. (Plantago)

1718:(A)
previous:1717
Ovule apical or axillary, anatropous or campylotropous. Fruit a drupe or a schizocarp.

1718:(B)
Ovule apical, atropous. Fruit a 2-valved capsule. Woody mangrove plants with pneumatophores (adventitious roots sticking up out of the mud) Flowers in dense, leafy, cymose spikes, 4-merous. (Avicenniaceae)
Avicenniaceae
1719:(A)
previous:1714
Flowers 5-merous.
next:1720

1719:(B)
Flowers 4-merous. Herbs or undershrubs, rarely shrubs. Flowers in spikes or in capitules, rarely solitary. Sepals connate at base. Disk absent. Anthers with 2 longitudinal slits. Fruit dehiscing with a lid.

1720:(A)
previous:1719
Sepals connate. Anthers with 2 longitudinal slits.
next:1721

1720:(B)
Sepals free or nearly so. Anthers with 1 longitudinal slit. Shrubs or trees, rarely undershrubs. Fruit a berry or a drupe.

1721:(A)
previous:1720
Corolla imbricate.
next:1722

1721:(B)
Corolla plicate.
next:1724

1722:(A)
previous:1721
Herbs. Corolla-tube about as long as the limb. Fruit a capsule or a schizocarp. Embryo straight.
next:1723

1722:(B)
Large trees. Corolla-tube much longer than the limb. Fruit a drupe. Embryo horse-shoe-shaped. Flowers in cymes. Style apical. Stigma 1. Amazonia. (sometimes included in Apocynaceae or Boraginaceae)

1723:(A)
previous:1722
Style apical. Stigmas 2. Fruit a capsule. Flowers usually in capitules, very small. Temperate America. (Collomia)

1723:(B)
Style gynobasic. Stigma 1. Fruit a schizocarp. Flowers in cincinni. Temperate Old World and Australia. (Rochelia)

1724:(A)
previous:1721
Calyx dentate.

1724:(B)
Calyx divided more deeply.

1725:(A)
previous:1712
Ovules 2 per locule or free ovary.
next:1726

1725:(B)
Ovules 3 -more per locule or free ovary.
next:1741

1726:(A)
previous:1725
Style stigmatic on the apex, or up to it, or between its lobes. Ovary 1, undivided or shallowly lobed.
next:1727

1726:(B)
Apex of the style stigmatic on the lower or the outer side of a thickened part, summit glabrous. Stem woody. Latex present. Leaves undivided, usually opposite. Stipules absent.

1727:(A)
previous:1726
Leaves all or only the upper opposite or in whorls.
next:1728

1727:(B)
Leaves all or only the upper alternate, or all radical, or absent.
next:1731

1728:(A)
previous:1727
Disk absent. Woody plants.
next:1729

1728:(B)
Disk usually present. Sepals connate. Micropyle and radicle pointing down.
next:1737

1729:(A)
previous:1728
Sepals connate. Corolla with a distinct tube. Fruit a drupe.
next:1730

1729:(B)
Sepals free. Petals connate at base only. Fruit dehiscent. Sepals 5. Fruit 1-locular, 1-seeded. Endosperm present.

1730:(A)
previous:1729
Climbing shrubs. Flowers in involucrate capitules; bracts 6. Stamens 5-16. Ovules anatropous. (Symphoremataceae)
Symphoremataceae
1730:(B)
Erect shrubs or trees. Flowers in racemes. Stamens 4. Ovules anatropous.

1731:(A)
previous:1727
Ovules either basal, or ascending, or patent, or axillary and hemitropous 1.
next:1732

1731:(B)
Ovules pendulous, anatropous, raphe ventral.
next:1739

1732:(A)
previous:1731
Ovules basal.
next:1733

1732:(B)
Ovules axillary. Sepals connate. Corolla imbricate. Endosperm present. Embryo straight.
next:1735

1733:(A)
previous:1732
Trees or shrubs. Corolla valvate. Endosperm absent. Embryo straight or slightly curved. Calyx 4-6-lobed, lobes valvate. West Indies. (Goetzeaceae: Coeloneurum, Goetzea)
Goetzeaceae
1733:(B)
Climbers or twiners, rarely erect plants. Corolla plicate, or induplicate, or imbricate. Endosperm present. Embryo curved or folded.
next:1734

1734:(A)
previous:1733
Twining parasites. Flowers 4-merous. Calyx connate. Corolla imbricate. (Cuscutaceae)
Cuscutaceae
1734:(B)
Climbers, rarely erect plants, not parasiting. Flowers 5-merous. Sepals usually nearly free. Corolla plicate or induplicate.

1735:(A)
previous:1732
Flowers 5-merous, rarely 4-merous, then stigmas 2. Disk more or less developed, hypogynous. Fruit a capsule or a drupe.
next:1736

1735:(B)
Flowers 4-merous. Fruit dehiscing with a lid. Leaves undivided or lobed. Flowers in spikes, or in capitules, rarely solitary and terminal. Stigma 1. Ovules axillary, campylotropous.

1736:(A)
previous:1735
Herbs. Fruit a capsule. Ovules apotropous.

1736:(B)
Shrubs. Fruit a drupe. Ovules epitropous. Pantropical, restricted to riverbeds. (Ehretiaceae: Rotula)
Ehretiaceae
1737:(A)
previous:1728
Ovary completely 2-locular. Fruit a septicide capsule. Disk present.
next:1738

1737:(B)
Ovary more or less incompletely loculed. Fruit a schizocarp or a drupe. Funicles inconspicuous, seeds (sub-)sessile. Endosperm absent.

1738:(A)
previous:1737
Ascending herb. Leaves opposite. Calyx deeply 3-fid. Funicles large, indurated, hook-shaped. Endosperm absent. Brazil. (Pentstemonacanthus)

1738:(B)
Virgate undershrubs. Leaves in whorls. Calyx 5-dentate. Funicles inconspicuous, seeds (sub-)sessile. Endosperm present. S. Africa. (Retziaceae, also in Scrophulariaceae, Solanaceae)
Retziaceae
1739:(A)
previous:1731
Styles 2. Stigma 1 per style. Ericoid shrublets. Stipules absent. Sepals connate. Corolla imbricate, not plicate. Fruit a capsule or a nut. Endosperm present. Embryo minuscule. S. Africa.

1739:(B)
Style 1. Stigmas 1 or 2.
next:1740

1740:(A)
previous:1739
Leaves undivided. Stipules present, though often inconspicuous. Flowers in cymes. Stigmas 2. Flowers 5-merous. Ovules pendulous.

1740:(B)
Leaves usually pinnately compound. Stipules absent. Flowers in panicles. Stigma 1, undivided or lobed. Filaments nearly completely connate.

1741:(A)
previous:1725
Stigma apical on the style or immediately below it, or between its apical lobes. Ovary 1, undivided or shallowly lobed.
next:1742

1741:(B)
Apex of the style stigmatic on the lower or outer side of a thickened part, summit glabrous. Latex present. Leaves undivided, usually opposite. Stipules absent. Flowers 5-merous. Ovary 1, 2-locular.

1742:(A)
previous:1741
Leaves all, or only the upper, alternate, or all radical.
next:1743

1742:(B)
Leaves all, or only the upper, opposite or in whorls.
next:1746

1743:(A)
previous:1742
Bracts, if any, not transformed.
next:1744

1743:(B)
Bracts of sterile flowers saccate, pitcher-like, or spathulate, brightly coloured. Woody plants. Leaves simple. Flowers 5-merous. Sepals free. Corolla imbricate, 5-partite. Tropical America.

1744:(A)
previous:1743
Sepals connate.
next:1745

1744:(B)
Sepals free. Trees. Corolla unilaterally induplicate. Flowers solitary, axillary. Madagascar. (Humbertiaceae)
Humbertiaceae
1745:(A)
previous:1744
Leaves simple.
next:1753

1745:(B)
Leaves 1- or 3-foliolate. Woody plants. Corolla nearly actinomorphic, 5-lobed, imbricate. Endosperm absent.

1746:(A)
previous:1742
Fruit either septicide, or both septicide and loculicide, or indehiscent. Funicles not indurated, seeds (sub-)sessile. Endosperm present.
next:1747

1746:(B)
Fruit loculicide. Funicles indurated, more or less hook-shaped. Endosperm absent. Stipules absent. Corolla imbricate, often contort.

1747:(A)
previous:1746
Leaves pinnately compound. Trees (Oroxylum) or lianas (Nyctocalos) Corolla imbricate. S.E. Asia.

1747:(B)
Leaves simple.
next:1748

1748:(A)
previous:1747
Sap bitter. Corolla contort, segments overlapping to the right (laterally seen) Herbs or undershrubs, rarely shrubs. Stipules absent, sometimes an interpetiolary line present.

1748:(B)
Sap not bitter. Corolla either valvate, or imbricate but not contort, or contort and segments overlapping to the left, rarely to the right, then plants woody and leaves either with a sheath at base, or auriculate.
next:1749

1749:(A)
previous:1748
Corolla valvate.
next:1750

1749:(B)
Corolla imbricate or contort.
next:1752

1750:(A)
previous:1749
Woody plants. Corolla valvate or induplicative-valvate.
next:1751

1750:(B)
Herbs Corolla exduplicatitve-valvate. Style articulated.(Spigeliaceae: Spigelia)
Spigeliaceae
1751:(A)
previous:1750
Virgate shrub, glandular-hairy. Leaves in whorls. Stipules absent. Corolla induplicative-valvate. S. Africa. (Retziaceae, also in Scrophulariaceae or Solanaceae)
Retziaceae
1751:(B)
Shrubs or trees, not glandular-hairy. Leaves opposite. Stipules connate into a sheath, or reduced to an interpetiolary line. Corolla valvate. (Antoniaceae, Strychnaceae)
Antoniaceae Strychnaceae
1752:(A)
previous:1749
Corolla imbricate, rarely contorted to the left. Fruit a capsule.

1752:(B)
Corolla contorted to the right. Fruit a berry. (Potaliaceae)
Potaliaceae
1753:(A)
previous:1745
Calyx 5-merous.
next:1754

1753:(B)
Calyx 4-partite. Herbs or undershrubs. Flowers in spikes, or in capitules, rarely solitary, terminal. Corolla 4-lobed, imbricate, not plicate. Disk absent. Stigma undivided. Capsule dehiscing with a lid. (Plantago)

1754:(A)
previous:1753
Corolla-lobes 5, imbricate, not plicate. Fruit a capsule, dehiscing longitudinally. Plants usually herbaceous.
next:1756

1754:(B)
Corolla valvate or plicate, then sometimes imbricate, rarely imbricate and not plicate, then plants either herbaceous with undivided or lobed leaves, flowers solitary and axillary, calyx actinomorphic, 5-fid, corolla 5-lobed, and stigma undivided or lobed, or plants woody and flowers solitary and axillary, or flowers in fascicles or cymose racemes and corolla 5-, rarely 4-lobed or -partite. Fruit a berry or a capsule dehiscing with a lid.
next:1755

1755:(A)
previous:1754
Ovules 4. Endosperm absent. West Indies. (Goetzeaceae: Goetzea)
Goetzeaceae
1755:(B)
Ovules usually numerous, rarely 4. Endosperm present. (incl. Salpiglossidaceae)

1756:(A)
previous:1754
Leaves not both filiform and circinnate in bud. Corolla-lobes imbricate, distinctly connate.
next:1757

1756:(B)
Leaves filiform, circinnate in bud. Corolla-lobes contort, nearly free to base. Herbs, sometimes slightly shrubby with glandular hairs (insectivorous) Flowers solitary, axillary. Capsule 2-4-valved. Australia.

1757:(A)
previous:1756
Leaves pinninerved, entire to pinnate. Flowers not in secund cincinni. Stigmas 1 or 2.
next:1758

1757:(B)
Leaves palmately lobed. Flowers in secund cincinni. Stigma 2-, rarely 3-lobed. Ovules many per locule. (Romanzoffia)

1758:(A)
previous:1757
Flowers minute, in capitules. Stigmas 2. Ovules rather few per locule. Fruit 3-valved. Testa mucilaginous. (Collomia)

1758:(B)
Flowers relatively large, not in capitules. Stigma 1. Ovules many per locule. Fruit 2-valved, valves sometimes bifid. Testa not mucilaginous. (Verbascum)