The flowering plants of Africa: An analytical key to the genera of African phanerogramsThonner, Franz
Science
The flowering plants of Africa: An analytical key to the genera of African phanerograms
Thonner, Franz
Angiosperms -- Africa; Plants -- Africa
600. Stamens 7-18, with united filaments. Placentas 3-5. 601
Stamens 23 or more, with free filaments. Leaves undivided. 602
601. Sepals 3. Corolla-lobes 4-6. Stamens 7-9 or 14-18. Anthers opening
outwards. _Cinnamosma_, =157. Winteranaceae=.
Sepals 4-5. Corolla-lobes 4-5. Stamens 8-10. Anthers opening inwards or
laterally. =118. Meliaceae.=
602. Corolla-lobes 6. Sepals 3. Filaments and styles very short.
Placentas numerous, confluent. Albumen abundant, ruminate. =81.
Anonaceae.=
Corolla-lobes 11-14. Sepals 2-4. Filaments and styles long. Placentas
2, two-cleft. Albumen scanty, uniform. _Hoplestigma_, =194.
Hoplestigmataceae=.
603. (588.) Stamens as many as the corolla-lobes, 3-5. Fruit a capsule.
Herbs or undershrubs. =162. Achariaceae.=
Stamens twice as many as the corolla-lobes, 10. Fruit a berry. Trees.
_Carica_, =163. Caricaceae=.
604. (553.) Ovary 2-celled. 605
Ovary 3-or more-celled. 669
605. Ovules solitary in each ovary-cell. 606
Ovules 2 or more in each ovary-cell. 621
606. Ovules erect or ascending. 607
Ovules pendulous, descending, or horizontal. 611
607. Fertile stamens 2 or 4. 608
Fertile stamens 5 or 6. 609
608. Seeds borne on a hook-like outgrowth of the funicle, exalbuminous.
Fruit capsular. =216. Acanthaceae.=
Seeds not on a hook-like outgrowth of the funicle. =205. Verbenaceae.=
609. Stamens opposite the divisions of the corolla. Anthers opening
outwards. Stigma 1. Trees or shrubs. =193. Sapotaceae.=
Stamens alternate with the divisions of the corolla. Anthers opening
inward. 610
610. Stigma 1. Corolla with imbricate or contorted aestivation. Seeds
exalbuminous. Herbs. Leaves alternate, exstipulate. _Rochelia_, =204.
Borraginaceae=.
Stigmas 2. Corolla with valvate aestivation. Seeds albuminous. Trees
or shrubs. Leaves opposite or whorled, stipulate. _Gaertnera_, =219.
Rubiaceae=.
611. (606.) Fertile stamens 2 or 4. 612
Fertile stamens 5 or more. 618
612. Stamens 4, free from the corolla. Corolla regular or nearly so,
2-4-lobed. Seeds with abundant albumen. =189. Ericaceae.=
Stamens inserted on the corolla. 613
613. Corolla scarious, regular, 4-lobed. Stamens 4. Stigma 1. Fruit
opening by a lid. Seeds albuminous. _Plantago_, =218. Plantaginaceae=.
Corolla not scarious, more or less irregular, rarely regular, but then
stamens 2 or stigmas 2. 614
614. Corolla regular. Stamens 2, alternating with the ovary-cells.
Disc wanting. Seeds with scanty albumen. Shrubs. Leaves compound, but
sometimes with a single leaflet. _Jasminum_, =197. Oleaceae=.
Corolla more or less irregular, rarely regular, but then stamens 4.
Leaves simple. 615
615. Flowers regular. Stamens 4. Anthers opening by two slits. Style
2-cleft. Fruit capsular. Seeds exalbuminous. Low shrubs. Leaves
alternate. _Wellstedia_, =204. Borraginaceae=.
Flowers more or less irregular. Leaves opposite or whorled, rarely
alternate, but then anthers opening by a single slit or pore. 616
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