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
Male flowers 10 in each pit of the spadix. Stamens 6. Fruit with 3
stones. Seeds emarginate. Species 1 (_B. flabellifer_ L., Palmyra
palm). Tropics. It yields timber, fibre (piassave), starch (sago),
gum, vegetables, edible fruits, wine, vinegar, alcohol, sugar, and
medicaments. =Borassus= L.
6. Stamens 15-30. Fruit with 3 stones, very rarely with 1-2.
Medium-sized trees.--Species 3. Madagascar and Mascarene Islands. They
furnish fibre for plaiting-work and are used as ornamental plants; one
species has edible fruits. =Latania= Comm.
Stamens 6. Fruit with a single stone. Tall trees. 7
7. Albumen ruminate. Fruit medium-sized (the size of a walnut). Stem
simple.--Species 3. Upper Nile and Madagascar. They yield timber,
fibre, edible pith, and alcohol. (Including _Bismarckia_ Hildebr. &
Wendl.) =Medemia= G. de Wuert. & Braun
Albumen homogeneous. Fruit large. Stem usually branched.--Species 13.
Tropics to Natal and Egypt. They yield wood, fibre, edible fruits, and
wine. “Dum palm.” =Hyphaene= Gaertn.
8. (3.) Ovary and fruit clothed with imbricate scales. Fruit
one-seeded. Flowers with bracts and bracteoles. Leaf-segments
reduplicate in bud. [Subfamily =LEPIDOCARYOIDEAE=, tribe METROXYLEAE.] 9
Ovary and fruit without scales. Flowers usually without bracts.
[Subfamily =CEROXYLOIDEAE=.] 15
9. Ovary incompletely 3-celled. [Subtribe CALAMINAE.] 10
Ovary completely 3-celled. [Subtribe RAPHIINAE.] 11
10. Stem erect. Leaves without tendrils. Spadices terminal. Seed
depressed-globose.--Species 1 (_M. Rumphii_ Mart.) Cultivated in
Madagascar and the Mascarenes. It yields wood, fibre for plaiting and
weaving, vegetables, and starch (sago). (_Sagus_ Blume). =Metroxylon=
Rottb.
Stem climbing. Leaves with tendrils. Spadices lateral.--Species 6.
Tropics. The stems (cane) are used for plaiting-work and for the
manufacture of walking-sticks and various utensils. “Rattan-palm.”
=Calamus= L.
11. Stem erect. Flowers monoecious, the male and female on the same
branches of the much-branched terminal spadices. Seed oblong or
ovate.--Species 10. Tropics. The leaf-stalks (false bamboo) are used
for building houses and making furniture, the fibres (piassave) for
plaiting, weaving, and brush-making. The stems, leaf-buds, and fruits
of some species yield starch, meal, vegetables, wine, and oil. (Plates
10 and 11.) =Raphia= Beauv.
Stem climbing. Leaves with tendrils. 12
12. Flowers monoecious, in cymes on the primary branches of the
lateral spadices; cymes consisting of one female and several male
flowers.--Species 2. Equatorial West Africa. They furnish cane for
plaiting-work and for the manufacture of various utensils. (Under
_Calamus_ L.) =Oncocalamus= Mann & Wendl.
Flowers hermaphrodite or polygamous, in pairs on the branches of the
spadices. 13
13. Spadices lateral. Spathes none.--Species 5. West Africa to the
upper Nile. They furnish cane for plaiting-work and for the manufacture
of various utensils. (Under _Calamus_ L.) =Eremospatha= Mann & Wendl.
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