09 Apr Petersianthus macrocarpus
Scientific name: Petersianthus macrocarpus P. Beauv.
Family: Lecythidaceae.
Distribution and conservation status: Found in moist lowland evergreen and semi-deciduous forests, often on well-drained soils. Least Concern but facing local habitat loss due to human activities.
Common names: African walnut, (English), Apara (Yoruba), Oko (Igbo).
Fruit/seeds: A large, woody, fibrous capsule, irregularly globose, up to 15–20 cm across.
Fruiting time: December- May.
Seed extraction method: Collect mature, fallen capsules before they split. Dry capsules in the sun until they dehisce naturally.
Types of seed: Orthodox with epigeal germination.
Sowing method: Direct sowing.
Sowing medium: Forest topsoil mixed with composted sawdust.
Germination Period: 14-21 days
Germination percentage: 70% (7/10 x 100)
Planting: Full shade.
Growth and development: A moderately fast-growing species under favorable site conditions, capable of reaching heights of 30–40 meters or more. Mature trees typically develop a large, straight bole measuring approximately 80–170 cm in diameter.
Notes: The genus Petersianthus has an unusual disjunct distribution with African and Philippine species.