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
Trees or shrubs. Juice resinous. Leaves usually alternate, without
stipules. Flowers in panicles, usually polygamous. Corolla present,
rarely (_Pistacia_) absent. Ovary superior, 1-5-celled. Ovules solitary
in each cell, inverted, with dorsal raphe. Fruit usually a drupe.
Albumen of the seeds scanty or wanting.--Genera 29, species 250.
(_TEREBINTHACEAE_.) (Plate 81.)
1. Carpel 1. Style simple, lateral; stigma entire. Funicle basal.
Fertile stamen 1, rarely 5. Leaves simple, entire. Trees. [Tribe
MANGIFEREAE.] 2
Carpels 2-5, sometimes 1-4 of them rudimentary. Style simple with a
lobed stigma, or more or less deeply divided, or several free styles.
Fertile stamens 3 or more. Leaves usually compound. 5
2. Stamen 1. Filament broad. Calyx 4-lobed. Petals 4. Disc one-sided.
Leaves lanceolate.--Species 2. West Africa. The fruits are edible.
(Under _Mangifera_ L.) =Fegimanra= Pierre
Stamens 5-10, but usually 1 only fertile. Petals 5. 3
3. Fertile stamens 5. Calyx bursting irregularly.--Species 1.
Madagascar. The juice is used for preparing varnishes and medicaments.
=Gluta= L.
Fertile stamen 1, usually accompanied by 4 or 9 sterile ones, which
bear small anthers. Calyx 5-partite. 4
4. Stamens and staminodes together 5. Disc cushion-shaped. Fruit
egg-shaped, with a fleshy pericarp and a slightly thickened stalk.
Leaves lanceolate.--Species 1 (_M. indica_ L., mango-tree). Cultivated
in the tropics. Yields timber, gum, tanning and dyeing materials,
edible fruits from which a spirituous drink is prepared, starch from
the seeds, and medicaments. =Mangifera= Burm.
Stamens and staminodes together 10. Disc indistinct. Fruit
kidney-shaped, with a resinous pericarp and a much thickened, fleshy
stalk. Leaves obovate.--Species 1 (_A. occidentale_ L., cashew-tree).
Cultivated in the tropics. Yields timber, gum, tanning and dyeing
materials, oil, vermin-poison, edible seeds and fruit-stalks from which
vinegar and brandy are prepared, and medicaments. =Anacardium= L.
5. (1.) Ovary with 1 fertile cell and sometimes 1-2 empty and usually
rudimentary ones, rarely (_Protorhus_) with 3 fertile cells; in this
case stamens 5 and leaves simple. [Tribe RHOIDEAE.] 6
Ovary with 3-5 fertile cells. Stamens 6-15 and leaves compound, rarely
stamens 5 and leaves simple, but then ovary-cells and styles 5. [Tribe
SPONDIEAE.] 20
6. Perianth simple, consisting of 1-2 segments in the male, of
2-5 in the female flowers. Stamens 3-5. Style 3-cleft. Leaves
compound.--Species 5, one of them only cultivated. North Africa
and northern East Africa. They yield timber, tanning and dyeing
materials, resins (mastic and turpentine) which are used industrially,
in medicine, as fumigatories, masticatories, or condiments, and
for preparing spirituous drinks, also edible oily fruits and seeds
(pistachio-nuts) and various medicaments. =Pistacia= L.
Perianth consisting of a calyx and a corolla. 7
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