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
22. Perianth-segments equal, lanceolate, shorter than the tube. Stamens
inserted at the throat of the perianth. Leaves 2, oblong.--Species 10.
South Africa. =Polyxena= Kunth
Perianth-segments more or less unequal in length, oblong or spatulate.
Stamens inserted in the tube of the perianth.--Species 40. South
Africa. Some are used as ornamental plants. =Lachenalia= Jacq.
23. Perianth-segments very short, usually blue. 24
Perianth-segments half as long as the tube or longer. 25
24. Perianth urn-shaped. Ovules 2 in each cell.--Species 7. North
Africa. Several species serve as ornamental plants; the bulbs are used
in medicine and as a substitute for soap. =Muscari= Mill.
Perianth bell-shaped. Ovules 5-6 in each cell.--Species 1. Madagascar.
=Rhodocodon= Bak.
25. Perianth-segments unequal, the inner longer. Leaves 2, rarely 3-5.
(See 22.) =Lachenalia= Jacq.
Perianth-segments nearly equal. 26
26. Perianth with a very short tube and spreading segments. Filaments
united at the base. Leaves 2, broad. Flowers in spikes.--Species 1.
South Africa (Cape Colony). =Whiteheadia= Harv.
Perianth with a more or less elongated tube, very rarely with a short
tube, but with erect segments. Leaves 2, narrow, or more. 27
27. Seeds globular or obovoid, turgid. Ovules 2-6 in each
cell.--Species 12. North and South Africa, southern East Africa, and
Madagascar. Some species are used in medicine, perfumery, or gardening.
(Including _Bellevalia_ Lapeyr.). =Hyacinthus= L.
Seeds flattened or angular. Ovules 6 or more in each cell. Flowers
whitish. 28
28. Perianth-segments erect or converging. 29
Perianth-segments spreading or bent back. 30
29. Perianth funnel-shaped; segments half as long as the curved tube.
Stamens inserted at the throat. Ovary oblong. Style subulate. Leaves
large, lanceolate. Raceme dense, about 100-flowered.--Species 2. German
South-west Africa. =Pseudogaltonia= Kuntze
Perianth bell-shaped; segments as long as the tube or longer. Stamens
inserted below the throat. Ovary ovate. Style short, columnar. Leaves
short, linear. Raceme lax, 6-20-flowered.--Species 2. South Africa
(Cape Colony). =Rhadamantus= Salisb.
30. Perianth withering; segments as long as the tube, the outer
oblong, the inner obovate. Stamens inserted below the throat. Seeds
angular.--Species 3. South Africa. Used as ornamental plants.
=Galtonia= Decne.
Perianth falling off after flowering; segments somewhat longer than
the tube, linear or oblong. Stamens inserted at the throat. Seeds
discoid.--Species 30. Southern and tropical Africa. Some are used as
ornamental or medicinal plants. =Drimia= Jacq.
31. (2.) Anthers turned outwards, opening outwards or laterally. Styles
3. [Tribe ANGUILLARIEAE.] 32
Anthers turned inwards, opening inwards or laterally. Style 1,
sometimes very short, with 1-3 stigmas. Flowers solitary or in lax,
few-flowered racemes or umbels. 37
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