False Sesame (Ceratotheca sesamoides), also known as African Sesame or Karkashi in Hausa, is an annual herb in the family Pedaliaceae, related to true sesame (Sesamum indicum) and used similarly as both an oilseed and a leaf vegetable across tropical Africa. Its leaves are mucilaginous when cooked and are prized in West African cuisine for their ability to thicken soups, while the seeds produce a flavorful oil.
• The genus name Ceratotheca means "horned case," referring to the horned fruit capsule
• The species epithet "sesamoides" means "sesame-like" — the plant closely resembles true sesame
• The leaves produce a viscous, mucilaginous texture when cooked, acting as a natural thickener
• In Nigeria, the leaves are a traditional ingredient in soups across the northern states
• The seeds yield a high-quality cooking oil similar to sesame oil
• One of several traditional African oilseed crops that deserve wider recognition
Ceratotheca sesamoides is native to tropical Africa.
• Distributed across sub-Saharan Africa from Senegal to Sudan and south to Tanzania and Mozambique
• Also found in southern Africa (Zimbabwe, South Africa)
• Grows in savanna grassland, woodland, and cultivated areas
• Found at elevations from sea level to approximately 1,500 meters
• Has been used as both a leaf vegetable and oilseed for centuries
• Particularly important in the savanna regions of West Africa (Nigeria, Niger, Mali)
• First described by the Swedish botanist Peter Jonas Bergius in 1767
• The genus Ceratotheca contains approximately 5 species, all African
• Now being studied as a potential oilseed crop for semi-arid tropical agriculture
• An important component of traditional agrobiodiversity in the African Sahel
• Distributed across sub-Saharan Africa from Senegal to Sudan and south to Tanzania and Mozambique
• Also found in southern Africa (Zimbabwe, South Africa)
• Grows in savanna grassland, woodland, and cultivated areas
• Found at elevations from sea level to approximately 1,500 meters
• Has been used as both a leaf vegetable and oilseed for centuries
• Particularly important in the savanna regions of West Africa (Nigeria, Niger, Mali)
• First described by the Swedish botanist Peter Jonas Bergius in 1767
• The genus Ceratotheca contains approximately 5 species, all African
• Now being studied as a potential oilseed crop for semi-arid tropical agriculture
• An important component of traditional agrobiodiversity in the African Sahel
An erect, annual herb growing 30 to 80 cm tall, sometimes reaching 120 cm.
Stems:
• Erect, branched, green to greenish-purple, covered with sticky glandular hairs
• Somewhat succulent
Leaves:
• Ovate to broadly lanceolate, 3 to 8 cm long and 1.5 to 4 cm wide
• Dark green, slightly hairy, with toothed margins
• Lower leaves sometimes lobed
• Alternate arrangement
• Mucilaginous when crushed or cooked
Flowers:
• Showy, pink to purple-pink, 3 to 4 cm long
• Tubular, two-lipped, with five lobes
• Born in leaf axils
• Inside of the flower is often paler with dark spots or lines
Fruit:
• Distinctive oblong capsule, 2 to 3 cm long
• Covered with stiff, hooked hairs
• Has two curved horns at the tip (the "ceratotheca" — horned case)
• Contains numerous small, dark seeds
• The hooked hairs attach to passing animals for seed dispersal
Seeds:
• Small, 1 to 2 mm, brown to black
• Oil-rich (approximately 30 to 40% oil)
Stems:
• Erect, branched, green to greenish-purple, covered with sticky glandular hairs
• Somewhat succulent
Leaves:
• Ovate to broadly lanceolate, 3 to 8 cm long and 1.5 to 4 cm wide
• Dark green, slightly hairy, with toothed margins
• Lower leaves sometimes lobed
• Alternate arrangement
• Mucilaginous when crushed or cooked
Flowers:
• Showy, pink to purple-pink, 3 to 4 cm long
• Tubular, two-lipped, with five lobes
• Born in leaf axils
• Inside of the flower is often paler with dark spots or lines
Fruit:
• Distinctive oblong capsule, 2 to 3 cm long
• Covered with stiff, hooked hairs
• Has two curved horns at the tip (the "ceratotheca" — horned case)
• Contains numerous small, dark seeds
• The hooked hairs attach to passing animals for seed dispersal
Seeds:
• Small, 1 to 2 mm, brown to black
• Oil-rich (approximately 30 to 40% oil)
Ceratotheca sesamoides is an annual herb related to sesame that plays an ecological role in African savanna and agricultural systems.
Habitat:
• Native to tropical Africa — distributed from Senegal to Sudan and south to Tanzania and Mozambique
• Also found in southern Africa (Zimbabwe, South Africa)
• Grows in savanna grassland, woodland, cultivated areas, and fallow fields
• Found at elevations from sea level to approximately 1,500 meters
• Prefers warm, semi-arid to sub-humid tropical conditions with 400 to 1,200 mm annual rainfall
• Adaptable to poor, sandy soils typical of the African Sahel and savanna
• USDA zones 10–12 (tropical annual, frost-sensitive)
Growth Habit:
• Erect, annual herb growing 30 to 80 cm tall, sometimes reaching 120 cm
• Fast-growing — completes its life cycle in 60 to 120 days
• Full sun species thriving in hot, open conditions
• Moderately drought-tolerant — can produce seed even in poor rainfall years
• Covered with sticky glandular hairs that trap insects and reduce herbivory
Pollination:
• Pinkish-white, tubular flowers are primarily bee-pollinated
• The flowers resemble those of true sesame (Sesamum indicum) and attract similar pollinators
• Self-compatible, ensuring seed production even in isolated savanna populations
• Flowering occurs during the brief rainy season
Ecological Role:
• Mucilaginous leaves help the plant retain moisture during dry periods, an important trait in semi-arid savanna
• Sticky glandular hairs trap small insects, reducing herbivore pressure and potentially benefiting neighboring plants
• Flowers provide nectar for native bees in the African Sahel during the growing season
• Seeds are oil-rich (30 to 40%) and are consumed by granivorous birds and small mammals
• Important component of traditional agrobiodiversity in the African Sahel, intercropped with cereals and legumes
• Used as a leaf vegetable, oilseed, and medicinal plant, reflecting its diverse ecological and cultural roles
Conservation:
• Not threatened — widespread and locally common
• Remains under-researched as a potential oilseed crop for semi-arid tropical agriculture
Habitat:
• Native to tropical Africa — distributed from Senegal to Sudan and south to Tanzania and Mozambique
• Also found in southern Africa (Zimbabwe, South Africa)
• Grows in savanna grassland, woodland, cultivated areas, and fallow fields
• Found at elevations from sea level to approximately 1,500 meters
• Prefers warm, semi-arid to sub-humid tropical conditions with 400 to 1,200 mm annual rainfall
• Adaptable to poor, sandy soils typical of the African Sahel and savanna
• USDA zones 10–12 (tropical annual, frost-sensitive)
Growth Habit:
• Erect, annual herb growing 30 to 80 cm tall, sometimes reaching 120 cm
• Fast-growing — completes its life cycle in 60 to 120 days
• Full sun species thriving in hot, open conditions
• Moderately drought-tolerant — can produce seed even in poor rainfall years
• Covered with sticky glandular hairs that trap insects and reduce herbivory
Pollination:
• Pinkish-white, tubular flowers are primarily bee-pollinated
• The flowers resemble those of true sesame (Sesamum indicum) and attract similar pollinators
• Self-compatible, ensuring seed production even in isolated savanna populations
• Flowering occurs during the brief rainy season
Ecological Role:
• Mucilaginous leaves help the plant retain moisture during dry periods, an important trait in semi-arid savanna
• Sticky glandular hairs trap small insects, reducing herbivore pressure and potentially benefiting neighboring plants
• Flowers provide nectar for native bees in the African Sahel during the growing season
• Seeds are oil-rich (30 to 40%) and are consumed by granivorous birds and small mammals
• Important component of traditional agrobiodiversity in the African Sahel, intercropped with cereals and legumes
• Used as a leaf vegetable, oilseed, and medicinal plant, reflecting its diverse ecological and cultural roles
Conservation:
• Not threatened — widespread and locally common
• Remains under-researched as a potential oilseed crop for semi-arid tropical agriculture
Both leaves and seeds are nutritious.
Leaves:
• Per 100 g fresh leaves: approximately 35 to 50 kcal
• Good source of protein (3 to 5 g per 100 g)
• Contains vitamins A and C
• Provides iron, calcium, and phosphorus
• Rich in mucilaginous polysaccharides (dietary fiber)
Seeds:
• Per 100 g seeds: approximately 550 to 600 kcal
• Very high in oil (30 to 40%)
• Good source of protein (18 to 22%)
• Contains essential fatty acids including oleic and linoleic acids
• Provides phosphorus, magnesium, and calcium
Leaves:
• Per 100 g fresh leaves: approximately 35 to 50 kcal
• Good source of protein (3 to 5 g per 100 g)
• Contains vitamins A and C
• Provides iron, calcium, and phosphorus
• Rich in mucilaginous polysaccharides (dietary fiber)
Seeds:
• Per 100 g seeds: approximately 550 to 600 kcal
• Very high in oil (30 to 40%)
• Good source of protein (18 to 22%)
• Contains essential fatty acids including oleic and linoleic acids
• Provides phosphorus, magnesium, and calcium
Propagated by seed.
• Sow seeds directly in the field at the start of the rainy season
• Scatter seeds and cover lightly with 0.5 to 1 cm of soil
• Germination in 7 to 14 days
• Thin seedlings to 15 to 20 cm apart
• Prefers well-drained, sandy to loamy soils
• Tolerates poor soils and semi-arid conditions
• Full sun required
• Drought-tolerant once established
• Minimal care needed
• Harvest leaves 30 to 50 days after sowing
• Multiple leaf harvests possible
• For seed production, allow plants to mature fully (90 to 120 days)
• Harvest seeds when capsules turn brown and dry
• Self-seeds readily in suitable conditions
• Well-adapted to the Sahelian climate zone
• Sow seeds directly in the field at the start of the rainy season
• Scatter seeds and cover lightly with 0.5 to 1 cm of soil
• Germination in 7 to 14 days
• Thin seedlings to 15 to 20 cm apart
• Prefers well-drained, sandy to loamy soils
• Tolerates poor soils and semi-arid conditions
• Full sun required
• Drought-tolerant once established
• Minimal care needed
• Harvest leaves 30 to 50 days after sowing
• Multiple leaf harvests possible
• For seed production, allow plants to mature fully (90 to 120 days)
• Harvest seeds when capsules turn brown and dry
• Self-seeds readily in suitable conditions
• Well-adapted to the Sahelian climate zone
Culinary uses:
• Leaves are cooked in soups and sauces across West Africa, particularly in Nigeria and Niger
• In northern Nigeria, the signature dish is "miyar karkashi" — a viscous soup made with ground false sesame leaves
• Leaves are dried and ground into powder for thickening soups
• The mucilaginous quality makes the leaves a natural sauce thickener
• Seeds are pressed for cooking oil — used similarly to sesame oil
• Seeds are roasted and eaten as a snack
• In some regions, the whole plant is boiled and the broth consumed as a tonic
• The leaves can be combined with other vegetables in mixed soups
• In Sudan, used in traditional kisra (sorghum bread) preparations
• The seed oil has a nutty flavor valued in cooking
• Young shoots are also cooked as a potherb
• Leaves are cooked in soups and sauces across West Africa, particularly in Nigeria and Niger
• In northern Nigeria, the signature dish is "miyar karkashi" — a viscous soup made with ground false sesame leaves
• Leaves are dried and ground into powder for thickening soups
• The mucilaginous quality makes the leaves a natural sauce thickener
• Seeds are pressed for cooking oil — used similarly to sesame oil
• Seeds are roasted and eaten as a snack
• In some regions, the whole plant is boiled and the broth consumed as a tonic
• The leaves can be combined with other vegetables in mixed soups
• In Sudan, used in traditional kisra (sorghum bread) preparations
• The seed oil has a nutty flavor valued in cooking
• Young shoots are also cooked as a potherb
Wusstest du schon?
False sesame produces a cooking oil so similar to real sesame that most people cannot tell the difference — yet this African native remains virtually unknown outside the continent
Mehr erfahrenKommentare (0)
Noch keine Kommentare. Schreiben Sie den ersten!
