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
1. Filaments united with one another and with the petals. Ovary
3-8-celled, with 1 ovule in each cell. Erect shrubs or trees, without
tendrils. Leaves 1-3 times pinnate.--Species 3. Tropics. They yield
vegetables, edible fruits, dyes, and medicaments, and serve as
ornamental plants. [Subfamily =LEEOIDEAE=.] =Leea= L.
Filaments free from each other and from the petals. Ovary 2-celled,
with 2 ovules in each cell. [Subfamily =VITOIDEAE=.] 2
2. Flowers polygamous-dioecious. Petals 5, cohering at the top and
falling off together. Disc 5-lobed. Style very short, conical. Seeds
pear-shaped, with two pits on the ventral face. Climbing shrubs. Leaves
more or less distinctly 3-5-lobed. Inflorescences paniculate, often
with tendrils.--Species 1 (_V. vinifera_ L., grape-vine). North Africa,
also cultivated in other regions. It yields edible fruits, also used
for preparing wine vinegar and brandy, oily seeds, and medicaments.
=Vitis= Tourn.
Flowers hermaphrodite or polygamous-monoecious. Petals usually
spreading at the time of flowering, very rarely cohering at the top,
but then only 4. Seeds more or less egg-shaped. 3
3. Style short-conical or wanting. Petals usually 5. Disc ring-shaped.
Seeds egg-or boat-shaped. Climbing shrubs. Inflorescences with
tendrils.--Species 30. Tropics. Some have edible fruits. (Under
_Cissus_ L. or _Vitis_ Tourn.) =Ampelocissus= Planch.
Style filiform or columnar, usually rather long. Inflorescences mostly
without tendrils. 4
4. Petals 5 or 6, very rarely 4 or 7, thickened, fleshy, persistent.
Disc adnate to the ovary. Style usually short. Climbing shrubs.
Inflorescences compact.--Species 15. Central and South Africa. (Under
_Cissus_ L. or _Vitis_ Tourn.) =Rhoicissus= Planch.
5. Petals 4, not thickened. Disc usually saucer-shaped, 4-lobed and
adnate to the ovary at the base only. Style usually long.--Species 150.
Tropical and South Africa and Egypt. Some of them yield edible fruits
or tubers, mucilage, or medicaments. (Under _Vitis_ Tourn.) (Plate
89.) =Cissus= L.
[Illustration: VITACEAE.
_FLOW. PL. AFR._
_Pl. 89._
J. Fleischmann del.
Cissus cirrhosa (Thunb.) Planch.
_A_ Flowering branch. _B_ Fruiting branch. _C_ Male Flower, the corolla
cut lengthwise. _D_ Stamens. _E_ Ovary cut lengthwise. _F_ Ovary cut
across. _G_ Fruit. _H_ Fruit cut lengthwise.]
[Illustration: CHLAENACEAE.
_FLOW. PL. AFR._
_Pl. 90._
J. Fleischmann del.
Leptochlaena multiflora Thouars
_A_ Flowering branch. _B_ Flower cut lengthwise. _C_ Cross-section of
ovary.]
ORDER MALVALES
SUBORDER ELAEOCARPINEAE
FAMILY 139. ELAEOCARPACEAE
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