Obeche (Triplochiton scleroxylon), also known as African Whitewood, Wawa, or Samba, is a large deciduous tropical tree of West Africa, prized for its exceptionally light, pale, even-textured wood that has become one of the most commercially important African timbers. A member of the mallow family (Malvaceae), this fast-growing tree can reach 45 m in height with a massive buttressed trunk. Its wood is widely used for furniture, joinery, plywood, and carvings.
• One of the most commercially important timber species from West Africa
• Wood is among the lightest of all commercial tropical hardwoods
• Also known as Wawa (Ghana), Samba (Nigeria), or Ayous (Cameroon)
• The species epithet "scleroxylon" means "hard wood," somewhat ironically for one of the softest commercial timbers
• The massive buttresses can extend 3-4 m up the trunk
분류학
• Distributed from Guinea and Sierra Leone eastward through Liberia, Ivory Coast, Ghana, Togo, Benin, Nigeria, Cameroon, and into the Republic of Congo and Democratic Republic of Congo
• Found in semi-deciduous and deciduous tropical forests, from sea level to approximately 700 m elevation
• Common in both primary and secondary forests, and often one of the first large trees to colonize abandoned farmland
• Prefers regions with annual rainfall of 1,200-2,000 mm and a distinct dry season
• A gregarious species that can form nearly pure stands in favorable conditions
• First described by the German botanist Karl Moritz Schumann
• The species is the source of the famous "African whitewood" exported to Europe for over a century
Trunk and Crown:
• Height: 30-45 m (occasionally reaching 55 m) with a massive, cylindrical bole
• Trunk diameter: 80-150 cm (up to 200 cm in exceptional specimens)
• Buttresses: very large, prominent, thin, extending 2-4 m up the trunk
• Bark: pale gray to yellowish-gray, smooth to slightly rough, peeling in thin scales
• Crown: large, spreading, with massive ascending branches
• Deciduous, shedding leaves during the dry season
Leaves:
• Simple, alternate, palmately lobed (3-5 lobes), resembling maple leaves
• Large, 15-30 cm across, with serrated margins
• Dark green above, paler and sometimes stellate-pubescent beneath
• Petioles 5-15 cm long
Flowers:
• Small, creamy-white, with 5 petals, approximately 1 cm in diameter
• Arranged in large, showy, terminal panicles 15-30 cm long
• Flowering occurs at the beginning of the dry season when the tree is leafless
• Insect-pollinated, particularly by bees and butterflies
Fruit:
• A distinctive, 5-winged samara 5-8 cm long
• Wings are membranous, enabling wind dispersal
• Profuse fruit production occurs during the dry season
• A classic pioneer species that rapidly colonizes forest gaps and abandoned agricultural land
• Produces enormous quantities of winged seeds that disperse widely on wind currents
• One of the most abundant large tree species in semi-deciduous forests of West Africa
• Flowers profusely during the dry season, providing nectar when few other trees are flowering
• Can form almost pure stands in secondary forest regrowth
• Roots help stabilize soil in forest regeneration areas
• Plays an important role in forest succession, preparing conditions for shade-tolerant climax species
• Supports populations of birds, insects, and mammals that feed on its seeds
• Requires tropical conditions with annual rainfall of 1,200-2,000 mm and a distinct dry season
• Prefers well-drained, deep, fertile loamy or sandy-loam soils
• Propagation is by seed; winged fruits should be collected during the dry season
• Seeds germinate within 7-21 days under warm conditions
• Seedlings grow rapidly, often reaching 2-3 m in the first year
• Requires full sun for optimal growth; intolerant of shade after the seedling stage
• Planting densities of 200-400 trees per hectare for timber plantations
• Rotation cycles of 20-30 years produce commercial-grade timber
• Coppices readily from cut stumps
재미있는 사실
Obeche wood is so light and soft that it can be easily dented with a fingernail, yet it is one of the most versatile and widely used African timbers. It is the primary wood used for making matchsticks in many African countries, and its pale, almost white color makes it an excellent substitute for more expensive woods when painted or stained.
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