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
Undershrubs or shrubs. Leaves alternate, small, undivided, without
stipules, rarely (_Staavia_) with gland-like stipules. Flowers in
heads, more rarely in spikes or racemes or solitary, hermaphrodite,
5-merous, very rarely 4-merous. Calyx with imbricate or open
aestivation. Petals free or united below, imbricate in bud. Stamens
as many as and alternate with the petals. Anthers opening inwards
by longitudinal slits. Ovary inferior or half-inferior, rarely
(_Lonchostoma_) almost superior, 1-3-celled. Ovules 1-4 in each cell,
pendulous, inverted. Style 1-3. Fruit a capsule or nut. Seeds with a
copious albumen and a minute embryo next the hilum.--Genera 12, species
55. South Africa. (Plate 63.)
1. Anthers linear or oblong, with parallel, wholly adnate cells.
Petals clawed, the claw without distinct glands. Ovary and receptacle
(calyx-tube) glabrous. Style 1, with 2-3 punctiform stigmas. [Tribe
AUDOUINIEAE.] 2
Anthers sagittate or cordate, with partly free and divergent cells.
[Tribe BRUNIEAE.] 4
2. Ovary 3-celled. Ovules 6. Stigmas 3. Connective prolonged beyond
the anther-cells, strap-shaped. Receptacle obconical. Petals red.
Flowers in head-like spikes. Bracteoles 7-10.--Species 1. Cape Colony.
=Audouinia= Brongn.
Ovary 2-celled or later on 1-celled. Ovules 4 or 8. Stigmas 2.
Connective not prolonged. Fruit a 1-seeded nut. Flowers solitary or in
racemes. 3
3. Ovary inferior. Receptacle obconical or cupular. Sepals hairy,
deciduous. Petals lanceolate. Flowers solitary.--Species 5. South
Africa. =Thamnea= Soland.
Ovary half-inferior. Ovules 4. Receptacle globular-urceolate. Sepals
glabrous, persisting in fruit. Petals obovate, white. Flowers in
racemes. Bracteoles 6.--Species 1. Cape Colony. =Tittmannia= Brongn.
[Illustration: BRUNIACECAE.
_FLOW. PL. AFR._
_Pl. 63._
J. Fleischmann del.
Raspalia microphylla (Thunb.) Brongn.
_A_ Flowering branch. _B_ Flower cut lengthwise. _C_ Cross-section of
ovary.]
[Illustration: HAMAMELIDACEAE.
_FLOW. PL. AFR._
_Pl. 64._
J. Fleischmann del.
Trichocladus ellipticus Eckl. and Zeyh.
_A_ Flowering branch. _B_ Flower cut lengthwise (the petals cut off
excepting one). _C_ Cross-section of ovary.]
4. Anthers sagittate. Petals sessile or with a glandless claw. Ovary
2-celled with 2 ovules in each cell. Fruit consisting of 2 dehiscing
parts. Flowers in spikes. 5
Anthers cordate. Petals clawed, the claw with 2 glands. 6
5. Petals with the claws united into a tube. Sepals, anthers, and ovary
hairy. Ovary almost superior. Bracteoles 2.--Species 3. Cape Colony.
=Lonchostoma= Wickstr.
Petals sessile, free. Flowers glabrous. Sepals very short. Ovary
almost inferior. Styles free. Bracteoles 4-8.--Species 3. Cape Colony.
=Linconia= L.
6. Ovary 1-celled. Ovule 1. Style and stigma simple. Glands at the base
of the petals crest-like. Flowers hairy. Fruit indehiscent. 7
Ovary 2-celled. Styles 2, or a single style with 2 stigmas. Glands at
the base of the petals tubercle-or pouch-like. 8
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