Sapele

Entandrophragma cylindricum is native to the tropical rainforests of West and Central Africa.

• Distributed across Ivory Coast, Ghana, Nigeria, Cameroon, Gabon, Equatorial Guinea, Congo, Democratic Republic of Congo, Uganda, and Tanzania
• Found in moist semi-deciduous and evergreen forests from sea level to approximately 700 m
• Prefers regions with annual rainfall of 1,400-2,500 mm
• Occurs as a scattered emergent tree above the main canopy, typically at densities of 0.5-2 trees per hectare
• First described by the Swiss botanist Heinrich Wilhelm Schumacher
• The genus Entandrophragma contains approximately 10 species, all African
• Has been heavily exploited for timber since the early 20th century
• Now listed as Vulnerable on the IUCN Red List

A massive, buttressed, semi-deciduous emergent rainforest tree.

Trunk and Crown:
• Height: 45-60 m with a tall, clean, cylindrical bole extending 20-30 m to the first branch
• Trunk diameter: 100-200 cm, with massive, thick buttresses extending 2-4 m up the trunk
• Bark: grayish-brown to reddish-brown, thick, scaly, peeling in irregular plates
• Crown: large, rounded to umbrella-shaped, with massive spreading branches

Leaves:
• Pinnately compound, alternate, 20-40 cm long with 6-10 pairs of leaflets
• Leaflets are oblong-lanceolate to elliptic, 8-15 cm long and 3-5 cm wide
• Dark glossy green above, paler beneath
• New foliage often emerges reddish before turning green
• Briefly deciduous during the dry season

Flowers:
• Small, creamy-white to greenish-white, 5-6 mm long
• Arranged in large, spreading, axillary panicles 15-25 cm long
• Pollinated by insects, particularly bees

Fruit:
• A large, woody, pendulous capsule 10-15 cm long and 4-6 cm in diameter
• Brown when mature, splitting into 5 valves from the apex
• Contains numerous winged seeds 5-8 cm long
• Seeds are wind-dispersed from the elevated crown

Sapele is an ecologically important emergent species in African tropical forests.

• Functions as a dominant emergent tree, extending well above the main canopy layer
• Winged seeds are wind-dispersed over considerable distances from the elevated crown
• Flowers provide nectar for bees and other insects during the dry season
• Supports diverse epiphyte communities on its massive trunk and branches
• The large crown provides nesting sites for birds and roosting sites for bats
• Plays a critical role in carbon sequestration due to its enormous biomass
• Occurs at naturally low densities, making populations particularly vulnerable to selective logging
• Regeneration depends on canopy gaps created by treefalls

Sapele cultivation is possible but requires long-term commitment due to slow growth.

• Requires hot, humid tropical conditions with annual rainfall exceeding 1,400 mm
• Prefers deep, well-drained, fertile soils
• Propagation is by seed; winged seeds should be collected from freshly dehisced capsules
• Seeds lose viability within 1-2 weeks and should be planted promptly
• Germination occurs within 10-20 days under warm, moist conditions
• Seedlings require shade initially but become increasingly light-demanding
• Growth is moderate to slow, reaching 5-10 m in 10 years under optimal conditions
• Planting densities of 100-200 trees per hectare for timber production
• Rotation cycles of 40-60 years are needed for commercial-grade timber
• Needs canopy gap creation for sustained growth beyond the sapling stage