Khaya senegalensis
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Khaya senegalensis at Tena Kourou , Burkina Faso |
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| Khaya senegalensis | ||||||||||||
| ( Desr. ) A.Juss. |
Khaya senegalensis (Syn .: Swietenia senegalensis Desr.), Also known as "African mahogany" in German, is a species of the mahogany family(Meliaceae).
Spread and endangerment
The area of Khaya senegalensis in sub-Saharan Africa extends from Senegal to Sudan . Khaya senegalensis occurs in Benin , Burkina Faso , Cameroon, the Central African Republic , Chad , the Ivory Coast, Gabon , Gambia, Ghana , Guinea, Guinea-Bissau , Mali, Niger , Nigeria, Senegal, Sierra Leone , Sudan, in Togo , and Uganda before.
Khaya senegalensis is on the red list of the IUCN out as "vulnerable" = "at risk", but applies the other hand, in western Australia as invasive species.
description
In Khaya senegalensis concerns mostly evergreen trees stature heights of up to 35 meters reach. The bark is brown-gray and scaly.
The alternate, screwy leaves at the branch ends are pinnate in pairs, with three to six pairs of leaflets that are entire, shiny and glabrous. The slightly leathery leaflets are short-stalked and ovate or lanceolate to obovate to ovate or elongated and usually pointed at the tip. They are about 6-14 inches long. Stipules are missing.
Khaya senegalensis is monoecious . The axillary or terminal, paniculate inflorescences are about 20 cm long. The fragrant, short-stalked flowers are unisexual, very similar and four-fold with a double flower envelope . The small sepals are green with rounded lobes. The four to five boat-shaped petals are white to cream in color. The cream-colored to slightly reddish, about 8 stamens are each fused to form an urn-shaped, top-toothed tube, the anthers sit inside and above the tube. The four-chamber ovary is on top and the disc-shaped stigma is yellow. The male flowers have a pistillode and the female have staminodes with antherodes. There is a pillow-shaped discus each.
The woody, rough, scabbed, grayish-brownish and four-lobed, rounded, many-seeded capsule fruit is about 4–8 cm long and thick-skinned. The approximately 2–2.5 centimeters long, flattened and approximately egg-shaped to elliptical, brownish seeds are just winged median.
use
Khaya senegalensis is an important timber marketed as "African mahogany" and used locally as construction timber, for handicrafts, and for making boats and mortars. During the French colonial rule , this species was planted as a shady street tree in many West African countries. There are also numerous medicinal uses.
An edible oil can be obtained from the seeds .
The leaves, bark , roots, and seeds are also used medicinally.
swell
- Khaya senegalensis at PROTA.
Web links
- Khaya senegalensis at Useful Tropical Plants.
- Khaya senegalensis at Pitchandikulam Forest Virtual Herbarium.
- African mahogany tree at Baumkunde.
- Seed leaflet No. 66 (PDF), Danida Forest Seed Center, 2003.
- CIRAD wood description ( Memento from December 26, 2011 in the Internet Archive ) (PDF).
- Khaya senegalensis in U. Brunken, M. Schmidt, S. Dressler, T. Janssen, A. Thombiano, & G. Zizka: West African plants - A Photo Guide , Senckenberg Research Institute, Frankfurt / Main, 2008 .
Individual evidence
- ^ IUCN Red List of Threatened Species. 2006. Khaya senegalensis .
- ^ PIER - Pacific Island Ecosystems at Risk .
- ^ A b Michel Arbonnier: Arbres, arbustes et lianes des zones sèches d'Afrique de l'Ouest. CIRAD. Montpellier 2000, ISBN 2-87614-431-X .