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
Fruit not winged; pericarp fleshy. (See 38.) =Deinbollia= Schum. &
Thonn.
45. (2.) Flowers irregular. Petals 4. Disc one-sided. Ovary 3-celled.
Fruit capsular. 46
Flowers regular or nearly so. Petals 5 or 0. Disc complete or
indistinct. 48
46. Petals with a long claw and a crisped scale, red. Disc cup-shaped.
Stamens 8. Ovary stalked. Fruit inflated, bursting irregularly. Seeds
with a red, bony testa and a spiral embryo. Shrubs. Leaves unequally
pinnate with a winged rachis and 11-13 leaflets.--Species 2. South
Africa and Madagascar. =Erythrophysa= E. Mey.
Petals with a short claw and without a scale. Disc flat. Ovary sessile.
Fruit opening regularly. Seeds with a leathery or crusty testa. Leaves
with 3-10 leaflets clothed with stellate hairs. 47
47. Stamens 5-6. Fruit with septifragal dehiscence. Embryo spirally
twisted. Leaves unequally pinnate, with 3-7 leaflets.--Species 2.
Madagascar and Mascarenes. Yielding timber. =Cossignia= Comm.
Stamens 8. Fruit with loculicidal dehiscence. Embryo curved. Leaves
equally pinnate, with 6-10 leaflets.--Species 3. Tropics. (_Majidea_
Kirk) =Harpullia= Roxb.
48. Petals present. Stamens 8. Ovary 3-celled. Leaves equally pinnate.
49
Petals absent. 51
49. Disc somewhat one-sided. Petals green or yellowish. Fruit capsular.
Leaves with 8-10 leaflets. (See 47.) =Harpullia= Roxb.
Disc equal-sided. Petals red or reddish. 50
50. Leaves with 4-6 leaflets. Petals with the margins bent back at the
base. Fruit capsular, 3-celled.--Species 1. Madagascar. =Conchopetalum=
Radlk.
Leaves with 8-14 usually serrate leaflets along a winged rachis.
Petals minutely toothed. Fruit indehiscent, leathery, usually
1-celled.--Species 1. South Africa. =Hippobromus= Eckl. & Zeyh.
51. Disc indistinct. Stamens 5-15, usually 8. Ovary 2-6-, usually
3-celled. Stigma lobed. Fruit capsular, 2-6-celled. Embryo spirally
twisted. Leaves usually simple.--Species 4. Tropical and South Africa.
They yield timber, medicaments, and edible fruits; the beaten branches
are used as torches. =Dodonaea= L.
Disc distinctly developed. Stamens 4-5. Ovary 2-celled. Fruit
indehiscent, usually drupaceous and 1-celled. Embryo not spiral. Leaves
pinnate. 52
52. Flowers 4-merous. Leaves unequally pinnate. Tall trees.--Species 1.
Southern West Africa (Angola). =Zanha= Hiern
Flowers 5-merous. Leaves equally pinnate. 53
53. Calyx slightly lobed. Seeds with a thin testa and short radicle.
Leaflets elliptical, entire. Flowers in panicles.--Species 1. West
Africa. =Talisiopsis= Radlk.
Calyx deeply divided. 54
54. Stamens alternating with the sepals. Stigma 2-lobed. Seeds with
a thin testa and short radicle. Leaflets oval, crenate. Flowers in
few-flowered cymes.--Species 1. East Africa. The seeds are edible.
=Dialiopsis= Radlk.
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