1896:(A)
previous:L
previous:1573
Fertile stamens less than the corolla-lobes, 1-4, rarely as many, then 2.
next:1897

1896:(B)
Fertile stamens either as many as the corolla-lobes and more than 2, or more.
next:1944

1897:(A)
previous:1896
Ovary 1, 1-locular or nearly so.
next:1898

1897:(B)
Ovary.1, 2-more-locular or nearly so, or ovaries 4 or 5, free, or connate at base only.
next:1917

1898:(A)
previous:1897
Ovule 1.
next:1899

1898:(B)
Ovules 2 -more.
next:1904

1899:(A)
previous:1898
Flowers bisexual.
next:1900

1899:(B)
Flowers-unisexual. Male flowers with a 2-4-lobed corolla and 2 or 3 stamens. Female flowers with an undivided or 2-lobed corolla and 3 stigmas.

1900:(A)
previous:1899
Stamens 4.
next:1901

1900:(B)
Stamens 1 or 2. Leaves radical. Flowers polygamous, in a spikelike capitule. Corolla 3-5-dentate. Stigmas 1 or 2.

1901:(A)
previous:1900
Leaves alternate. Endosperm fleshy. Embryo straight.
next:1902

1901:(B)
Leaves opposite. Endosperm absent. Embryo plicate. Anthers with 2 longitudinal slits.
next:1903

1902:(A)
previous:1901
Flowers in capitules, rarely in spikes. Anther with 1 transversal slit. Stigma capitate or 2-lobed. Fruit dry, indehiscent. Ovule pendulous. (incl. Poskea, sometimes included in Ehretiaceae, Boraginaceae)
Ehretiaceae
1902:(B)
Flowers in spikes. Anthers with longitudinal slits. Stigma undivided, not thickened. Fruit usually a capsule.

1903:(A)
previous:1901
Herbs. Flowers in spikes. Stigma 2-lobed. Ovule sub-basal, atropous. Fruit a nut. Temperate E. Asia and N. America.

1903:(B)
Shrubs or climbing undershrubs. Flowers solitary or in fascicles. Stigma 2-partite. Ovule anatropous. Fruit a drupe. Tropical Africa and America. (Mendonciaceae)
Mendonciaceae
1904:(A)
previous:1898
Ovules 2 - 4.
next:1905

1904:(B)
Ovules 8- more.
next:1911

1905:(A)
previous:1904
Terrestrial prostrate or erect herbs, or shrubs, or climbers.
next:1906

1905:(B)
Aquatics. Flowers solitary. Stamens 2. Ovules 2. ( Utricularia)

1906:(A)
previous:1905
Woody plants or prostrate herbs. Stamens 4.
next:1907

1906:(B)
Erect herbs. Stamens 2 or 3.
next:1910

1907:(A)
previous:1906
Ovules 2.
next:1908

1907:(B)
Ovules 3 or 4. Leaves opposite or in whorls. Ovary incompletely locular. (incl. Symphoremataceae: Congea)
Symphoremataceae
1908:(A)
previous:1907
Shrubs or climbers. Stamens inserted above the base of the corolla tube.
next:1909

1908:(B)
Prostrate herbs. Stamens adnate to the base of the corolla-tube. Flowers solitary. Calyx deeply divided. W. equatorial and S.W. tropical Africa. (Linariopsis)

1909:(A)
previous:1908
Flowers in racemes. Calyx deeply lobed. Stamens adnate to the middle of the corolla-tube. Shrubs.

1909:(B)
Flowers solitary or in fascicles. Calyx slightly lobed. Stamens adnate to the upper part of the corolla-tube. Shrubs or climbers. Fruit a drupe. (Mendonciaceae)
Mendonciaceae
1910:(A)
previous:1906
Flowers in racemes. Stamens 2. Ovules 4. Mexico. (Martynia)

1910:(B)
Flowers in cymes. Stamens 3. Ovules 3.

1911:(A)
previous:1904
Fertile stamens 2 or 4 and either corolla-lobes 5, or staminodes not Well developed.
next:1912

1911:(B)
Fertile stamen 1, rarely 2, then with 2 smaller staminodes. Corolla-lobes 4.

1912:(A)
previous:1911
Placenta 1, central.
next:1913

1912:(B)
Placentas 2-4, parietal.
next:1914

1913:(A)
previous:1912
Calyx deeply divided. Stamens 2, adnate to the base of the corolla tube. Endosperm absent. Herbs. Leaves radical or alternate. Anthers with 1 transversal slit.

1913:(B)
Calyx shortly lobed. Stamens 2 or 4, inserted on the corolla-tube. Endosperm present.

1914:(A)
previous:1912
Plants not parasitic. Leaves well developed, green.
next:1915

1914:(B)
Parasitic herbs. Leaves scale-like. Flowers solitary, terminal, or in spikes, or in racemes. Stamens 4. Fruit a capsule.

1915:(A)
previous:1914
Fruit a capsule, or a nut, or a berry, endocarp not indurated.
next:1916

1915:(B)
Fruit a horned 4-locular capsule, endocarp indurated. Erect or prostrate herbs. Leaves simple. Flowers in racemes. Corolla-lobes 5, short, slightly unequal, imbricate. Stamens 4, inserted on the corolla-tube. Pollen large, reticulate, without pores. Disk regular. Placentas 2-partite. Stigma 2-partite. Tropical and subtropical America.

1916:(A)
previous:1915
Leaves usually pinnately compound, rarely simple. Corolla-lobes descendingly imbricate. Seeds rather large, flat, usually winged or with a prominent margin, immersed in the enlarged, usually fleshy placentas. Woody plants. Stamens 4. Disk present. Stigma 2-partite. Fruit usually an elongated berry, or dry and indehiscent, or a capsule. Endosperm absent.

1916:(B)
Leaves simple, undivided. Corolla-lobes usually ascendingly imbricate. Seeds small, not immersed in the placentas.

1917:(A)
previous:1897
Ovary 2-, rarely 3-locular.
next:1918

1917:(B)
Ovary 4 - 10-locular, or ovaries 4 or 5, free.
next:1933

1918:(A)
previous:1917
Stipules absent, nodes rarely with interpetiolary lines. Leaves opposite or alternate. Stamens 2-4.
next:1919

1918:(B)
Stipules present or nodes with thin interpetiolary lines. Woody plants.
next:1920

1919:(A)
previous:1918
Corolla imbricate, not plicate, rarely valvate or plicate, then leaves opposite. Sept of the ovary usually transverse to the plane of symmetry of the flower.
next:1921

1919:(B)
Corolla valvate or plicate, then sometimes also imbricate. Sept of the ovary usually oblique to the plane of symmetry of the flower. Leaves alternate, sometimes in pairs, but not opposite. Flowers solitary or in cymes. Ovules several -many per locule. Fruit a septicide capsule or a berry. (incl. Salpiglossidaceae)

1920:(A)
previous:1918
Leaves opposite. Nodes with thin interpetiolary lines. Stamen 1. Ovules many per locule. Corolla-lobes 4, valvate. Tropical W. Africa. (Antoniaceae: Usteria)
Antoniaceae
1920:(B)
Leaves alternate. Stipules present, often early fugacious. Stamens 2 or 3. Ovules 2 per locule.

1921:(A)
previous:1919
Leaves usually alternate. Ovule 1 per locule, pendulous or descending, or 2-more, rarely 1 and erect or ascending, or 2 and separated by a sept, then fruit a loculicide capsule with hook-shaped funicles or with the micropyle and radicle pointing upwards. Thecae usually confluent.
next:1924

1921:(B)
Leaves usually opposite or in whorls. Ovule 1 per locule, erect or ascending, or ovary incompletely locular and ovules 2. Micropyle and radicle pointing downwards. Fruit a drupe, or a schizocarp, or a septicide capsule. Seeds sessile. Thecae usually separate.
next:1922

1922:(A)
previous:1921
Endosperm present.
next:1923

1922:(B)
Endosperm absent. Not with the combination of characters of next lead.

1923:(A)
previous:1922
Ericoid undershrubs. Leaves in whorls. Flowers in racemose spikes. Anthers inappendiculate. Ovule basal. S. Africa. (Stilbaceae)
Stilbaceae
1923:(B)
Herbs. Leaves opposite. Flowers solitary, axillary, or in few flowered cymes. At least some anthers appendiculate at base. Ovule axillary. (Dicrastylidaceae Achariteae)
Dicrastylidaceae
1924:(A)
previous:1921
Fruit a capsule or a berry, rarely dry, indehiscent, or a drupe, then either calyx undivided, or flowers in capitules, or in spikes, or in panicles, or thecae separate and disk well developed.
next:1925

1924:(B)
Fruit a drupe or a nut. Shrubs or trees, rarely undershrubs. Leaves usually alternate, undivided or lobed. Flowers solitary or in fascicles. Calyx 5-partite. Disk absent or indistinct. Stamens 4. Thecae confluent at the apex. Ovules 1-8 per locule, pendulous, anatropous. Seeds few. Endosperm scanty.

1925:(A)
previous:1924
Endosperm usually copious, rarely absent or scanty, then stigma undivided and fruit a septicide or both septicide and loculicide capsule, or dry and indehiscent. Cotyledons usually narrow. Leaves simple, sometimes deeply incised. Fruit a schizocarp, or dry and indehiscent, or a berry, or a capsule, then when loculicide either sepals connate up to halfway or more, or corolla nearly actinomorphic and 4-fid, or anthers with 1 slit, or stigma simple. Seeds usually minute.
next:1926

1925:(B)
Endosperm very scanty and almost membranous, or absent, rarely well-developed (Acanthaceae) but then copious and sepals connate at base only, corolla bilabiate or nearly actinomorphic, 5-lobed, anthers with 2 longitudinal slits or pores, stigma 2-4-lobed, and fruit a loculicide capsule. Cotyledons usually broad. Stigma lobed or partite, rarely simple, then fruit either a loculicide or irregularity dehiscing capsule, or a berry, or a drupe.
next:1927

1926:(A)
previous:1925
Ericoid herb or undershrubs. At least lower leaves opposite. Corolla 4- or 5- lobed, upper lobes covering the 2 lateral or basal ones in bud. Stamens 2 or 4, if 5 the dorsal staminodial. Ovule 1 per locule, apical, pendulous. Fruit a 1-seeded drupe or a schizocarp with 2 nutlets. S. Africa, Madagascar(Selaginaceae)

1926:(B)
Plants otherwise.

1927:(A)
previous:1925
Fruit not a schizocarp.
next:1928

1927:(B)
Fruit a schizocarp of 4 nutlets. Herbs. Leaves alternate. Style gynobasic. Ovule 1 per locule, epitropous, basal, erect. Endosperm absent. Radicle pointing upwards.

1928:(A)
previous:1927
Endosperm absent, rarely scanty, then fruit a capsule without wings or spines and disk indistinct.
next:1929

1928:(B)
Endosperm scanty, almost membranous. Plants usually herbaceous, with capitate glandular hairs. Leaves dentate or deeply incised. Flowers solitary or in fascicles. Stamens 4. Disk distinct. Stigma partite. Fruit a winged or spiny nut or a capsule. Embryo straight.

1929:(A)
previous:1928
Plants usually herbaceous. Leaves simple, incised or not. Calyx usually deeply incised, or sepals free.
next:1930

1929:(B)
Plants usually woody. Leaves usually compound. Sepals nearly completely connate, rarely at base only. Calyx apert, or closed, or valvate. Stigma 2-par,tite. Fruit a more or less juicy berry, or a septicide or loculicide capsule. Placentas in fruit usually separated by an elongated sept. Seeds several-many, laterally attached, sessile or nearly so, winged, rarely not, then either fruit a berry or leaves compound and seeds in 1 row. Endosperm absent.

1930:(A)
previous:1929
Nodes usually swollen. Leaves usually with cystoliths. Fruits usually with indurated, hook-shaped, rarely wart-shaped funicles, or sessile, then either ovules 1 or 2 per locule, or endosperm present, or sepals connate at base only. Leaves simple, sometimes partite. Fruit a loculicide capsule, rarely a drupe. Placentas in fruit approximate to fused. Seeds not winged, usually 2 - 10 per locule in 2 rows, rarely solitary.
next:1931

1930:(B)
Nodes usually not swollen. Leaves without cystoliths. Funicles not indurated. Herbs, sometimes woody at base. Leaves undivided. Calyx imbricate, 5-partite. Stigma undivided. Fruit irregularity dehiscent or a berry.

1931:(A)
previous:1930
Ovary 2-locular. Fruit a 2-many-seeded capsule.
next:1932

1931:(B)
Ovary 1- (or 2-)Locular. Fruit a 1- or 2-seeded drupe. (Mendonciaceae)
Mendonciaceae
1932:(A)
previous:1931
Ovules 1 -many per locule. Hardened funicles well developed.

1932:(B)
Ovules 2 per locule. Hardened funicles absent to papillate. (Thunbergiaceae)
Thunbergiaceae
1933:(A)
previous:1917
Ovule 1 per locule.
next:1934

1933:(B)
Ovules 2-more per locule.
next:1940

1934:(A)
previous:1933
Leaves alternate, rarely opposite, then ovules pendulous and micropyle and radicle directed upwards.
next:1935

1934:(B)
Leaves opposite or in whorls, exceptionally alternate. Ovules either basal, or micropyle and radicle directed downwards.
next:1936

1935:(A)
previous:1934
Flowers in cymes, or in racemes, or in panicles. Fertile stamen 1. Ovary deeply 4-partite. Fruit dry, indehiscent.

1935:(B)
Flowers solitary or in fascicles. Fertile stamens 4. Ovary undivided or nearly so. Fruit a drupe or a nut. Shrubs or trees, rarely undershrubs. Leaves alternate, rarely opposite. Corolla-lobes 5. Anthers with 1 slit. Disk indistinct or absent. Stigma 1. Ovules pendulous, micropyle and radicle directed upwards. Endosperm scanty.

1936:(A)
previous:1934
Fertile stamens 2 or 4. Micropyle and radicle directed downwards.
next:1937

1936:(B)
Fertile stamens 4. Flowers solitary. Ovary undivided, 4-8-locular. Ovules basal. Fruit spinose, dry, indehiscent. Endosperm scanty.

1937:(A)
previous:1936
Ovary undivided or nearly so, rarely distinctly lobed, then initially incompletely locular, ovules inserted in the middle and mericarps more or less drupaceous. Ovules pendulous or inserted in the middle, rarely basal, then flowers in spikes, or in racemes, or in capitules.
next:1938

1937:(B)
Ovary deeply 4-partite, usually to the base, rarely less, completely 4-locular, then, as usual, mericarps dry, rarely drupaceous. Ovules basal, rarely inserted somewhat higher or halfway. Flowers usually in false whorls.

1938:(A)
previous:1937
Ovule either axillary, campylotropous, or basal, anatropous.
next:1939

1938:(B)
Ovule apical, atropous. Climbing shrubs. Flowers in involucrate capitules. Endosperm absent. S.E. Asia. (Symphoremataceae: Congea)
Symphoremataceae
1939:(A)
previous:1938
Herbs, undershrubs, or shrubs. Flowers 1-3 together, in axillary cymes. Flowers bilabiate. Anthers inappendiculate. Ovule axillary, campylotropous. Fruit a drupe or a schizocarp. Endosperm present. Australia. (Dicrastylidaceae-Chloantheae)
Dicrastylidaceae
1939:(B)
These characters not combined.

1940:(A)
previous:1933
Leaves simple, translucent-glandular-punctate or not. Stamens 4. Ovary undivided or obscurely lobed.
next:1941

1940:(B)
Leaves usually compound, translucent-glandular-punctate. Stamens 2 or 3. Ovary deeply divided. Ovules 2 per locule.

1941:(A)
previous:1940
Leaves entire, or lobed, or incised. Tendrils absent.
next:1942

1941:(B)
Leaves deeply incised. Tendrils present. Herbs. Flowers in racemes. Anthers with 2 slits. Disk saucer-shaped. Stigma 4-lobed. Ovules 3 per locule. Fruit a spiny capsule. Endosperm absent. C. America to Peru. (Tourrettia)

1942:(A)
previous:1941
Leaves not translucent-glandular-punctate. Anthers with 2 slits.
next:1943

1942:(B)
Leaves translucent-glandular-punctate. Anthers with 1 slit or 2 apically confluent ones. Shrubs or trees, rarely undershrubs. Leaves undivided. Flowers solitary or in fascicles. Disk indistinct or absent. Stigma 1, undivided or lobed. Fruit a drupe or a nut. Endosperm scanty.

1943:(A)
previous:1942
Stigma undivided or 2-lobed. Ovary incompletely locular. Herbs. Leaves undivided. Disk distinct. Ovules numerous. Fruit a capsule or a berry. Endosperm absent.

1943:(B)
Stigmas 2-4, or stigma 1, 2-4-partite. Ovary 2-4-locular. Herbs or undershrubs, rarely shrubs, with glandular hairs. Leaves undivided, or lobed, or divided. Disk present. Fruit a capsule or a nut. Endosperm scanty.