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
Stamens inserted on the middle or the upper part of the
perianth-segments; anthers usually sessile. Perianth more or less
deeply divided, but rarely to the base. [Tribe PROTEEAE.] 3
2. Receptacle with a short cupular excrescence at the base. Ovule
pendulous. Fruit a drupe. Flowers in fascicles arranged in racemes.
Leaves whorled, undivided.--Species 1. South Africa. The fruits are
edible and used as a substitute for coffee. =Brabeium= L.
Receptacle with 4 scale-like excrescences at the base. Flowers in
spikes arranged in racemes. Leaves alternate, 2-lobed.--Species
1. Madagascar. The wood is used for torches, the seeds yield oil.
=Dilobeia= Thouars
3. Flowers unisexual, regular. 4
Flowers hermaphrodite. 5
4. Male flowers in spikes or racemes, female in heads. Bracts
narrow.--Species 3. South Africa. =Aulax= Berg
[Illustration: PROTEACEAE.
_FLOW. PL. AFR._
_Pl. 33._
J. Fleischmann del.
Leucospermum conocarpum R. Br.
_A_ Flowering branch. _B_ Flower laid open. _C_ Perianth-segment and
stamen.]
[Illustration: LORANTHACEAE.
_FLOW. PL. AFR._
_Pl. 34._
J. Fleischmann del.
Loranthus capitatus (Spreng.) Engl.
_A_ Flowering branch. _B_ Flower. _C_ Lower part of the flower cut
lengthwise. _D_ Anther.]
Male and female flowers in heads. Bracts broad.--Species 75. South
Africa. Some species yield timber or medicaments; the silvery-haired
leaves of the silver-tree (_L. argenteum_ R. Br.) also form an article
of commerce. =Leucadendron= Herm.
5. Flowers regular or almost so, disposed in heads which are sometimes
reduced to a single flower. Perianth-segments united below, free and
recurved above. 6
Flowers distinctly irregular. Perianth-segments more or less united,
except the hindmost, which is separated from the others. 11
6. Leaves, at least the inferior, more or less divided. 7
Leaves all undivided. 8
7. Heads arranged in sometimes very short spikes, 4-flowered. Ovary
glabrous or almost so. Fruit sessile.--Species 15. South Africa.
(_Nivenia_ R. Br.) =Paranomus= Salisb. & Knight
Heads solitary or arranged in corymbs or heads, usually many-flowered.
Ovary hairy, usually woolly or hispid. Fruit short-stalked.--Species
70. South Africa. =Serruria= Salisb.
8. Heads solitary, 4-or more-flowered. Fruit sessile.--Species 20.
South Africa. (Including _Orothamnus_ Eckl.) =Mimetes= Salisb.
Heads arranged in spikes, racemes, or umbels, 1-6-flowered. Fruit with
a short stalk. 9
9. Flowers somewhat irregular. Stigma lateral, or very oblique, or
seated in the centre of a disc-like expansion of the style-apex. Heads
in lax spikes or racemes.--Species 25. South Africa. =Spatalla= Salisb.
Flowers regular. Stigma terminal or nearly so, conical or club-shaped.
10
10. Style more or less lateral, not constricted at the base.
Perianth-tube 4-angled. Inflorescence cylindrical.--Species 5. South
Africa. =Spatallopsis= Phillips
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