Swietenia macrophylla

Swietenia macrophylla
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Name	Swietenia macrophylla
Status	CITES_A2
Genus	Swietenia
Species	macrophylla
Authority	King

Swietenia macrophylla is a large tropical tree valued for its timber and ecological role in neotropical and paleotropical forests. Originally described during botanical expeditions linked to colonial-era naturalists, the species has been the subject of forestry programs, international trade disputes, and conservation actions under multilateral agreements. Researchers, conservationists, and timber industries in nations from Central America to Southeast Asia have engaged with its biology, management, and legal status.

Taxonomy and nomenclature

The species was classified in the genus Swietenia within the family Meliaceae following taxonomic treatments influenced by botanists working in the 19th and 20th centuries, with nomenclatural acts recorded by authorities associated with botanical gardens and herbaria. Taxonomic revisions cite comparisons with congeners and morphological keys published in floras used by institutions such as the Royal Botanic Gardens, Kew, the Smithsonian Institution, the Missouri Botanical Garden, and national herbaria in Mexico and Brazil. Synonymy and varietal concepts appear in monographs that reference type specimens housed at major museums and collections curated by authorities linked to the Linnean Society and botanical congresses.

Description

A canopy emergent reaching heights exceeding 40–60 m, the tree produces pinnate leaves with numerous leaflets and a buttressed bole noted in field guides used by foresters in Costa Rica, Belize, and Peru. The flowers are small, actinomorphic, and arranged in inflorescences documented in floristic treatments circulated among botanists at the Field Museum and Kew; fruit are woody dehiscent capsules releasing winged seeds that facilitate wind dispersal observed by ecologists working in Amazonian and Mesoamerican sites. Wood is characterized by interlocked grain and a reddish-brown hue described in timber manuals used by carpenters and furniture makers in Guatemala, Honduras, and Malaysia.

Distribution and habitat

Native range extends through parts of Central America, the Caribbean rim, and South America, with disjunct populations reported in lowland tropical forests and montane foothills; introduction and plantation cultivation have occurred in Asia and Oceania under programs promoted by forestry departments and development banks. Occurrence records have been aggregated by biodiversity databases used by conservation NGOs, botanical institutions, and governmental agencies in countries such as Mexico, Belize, Brazil, Bolivia, and Peru. Habitats include moist evergreen forest fragments, secondary regrowth on degraded landscapes, and managed stands established under silvicultural trials supported by universities and research institutes.

Ecology and life history

Reproductive ecology involves synchronized flowering and mass fruiting events that attract pollinators and seed dispersers studied by ecologists affiliated with universities and research centers involved in tropical ecology, including collaborative projects with the Smithsonian Tropical Research Institute and national parks. Seedling establishment and recruitment are influenced by canopy gaps, disturbance regimes, and soil moisture gradients investigated in long-term plots maintained by organizations such as the Tropical Ecology Assessment and Monitoring Network and botanical gardens conducting restoration trials. Life-history traits—growth rates, longevity, and response to logging—have been quantified in forest inventories conducted by agencies and timber companies participating in certification schemes overseen by standard-setters.

Uses and economic importance

Renowned for high-quality timber marketed under trade names used by exporters, importers, and furniture manufacturers in international markets including those in the United States, United Kingdom, Japan, and Germany, the wood is sought for joinery, cabinetry, musical instruments, and boatbuilding by artisans and corporations. Plantation and agroforestry initiatives promoted by development agencies, multilateral lenders, and national ministries of agriculture have aimed to supply demand while reducing pressure on wild stands. Non-timber uses—medicinal preparations and ornamentals—have been recorded in ethnobotanical surveys conducted by universities and NGOs working with indigenous and local communities.

Conservation and threats

Overexploitation for high-value timber, illegal logging networks, and habitat conversion driven by agricultural expansion, ranching, and infrastructure projects have prompted listing actions and export controls coordinated through international instruments and trade regulations administered by customs authorities and environmental ministries. Conservation responses include protected-area designations enforced by park agencies, species recovery guidelines developed by conservation organizations and botanical gardens, and international trade restrictions implemented under multilateral agreements. Ex situ conservation, sustainable forestry certification, community-based management, and reforestation trials supported by international conservation organizations, research institutions, and donor agencies aim to mitigate declines and promote restoration.

Category:Meliaceae Category:Timber trees