Duabanga is a small genus of large, lowland evergreen rainforest trees native to tropical Asia, comprising two or three species. It belongs to the family Lythraceae (order Myrtales), where it forms its own monotypic subfamily, Duabangoideae; the genus was formerly placed, together with the mangrove genus Sonneratia, in the now-defunct family Sonneratiaceae. GBIF's taxonomic backbone confirms the placement in Lythraceae and lists two accepted species descending from the genus.
The genus name derives from a local Tripura name for the tree, duyabangga, recorded by the Scottish botanist Francis Buchanan-Hamilton. Duabanga trees are large components of moist tropical forest, ranging from the Himalayas across Southeast Asia to New Guinea; individual species occupy overlapping but distinct ranges within that span, from Northeast India, the Andaman Islands, Myanmar, Thailand, Cambodia, Malaysia, Vietnam and parts of China (D. grandiflora) to the islands of the Malay Archipelago and New Guinea (D. moluccana) and Java (D. taylorii).
The genus also has a fossil record: wood fossils from the Deccan Traps of Kutch, India, assigned to the genus Duabangoxylon, are considered closely related to living Duabanga species, pointing to a long presence of the lineage in South Asia.
Etymology
The genus name Duabanga was coined by the botanist Francis Buchanan-Hamilton, based on duyabangga, a local name for the tree used in Tripura.
Distribution
Duabanga species are large trees of moist tropical forest, distributed from the Himalayas across Southeast Asia to New Guinea. D. grandiflora ranges through Northeast India, the Andaman Islands, Myanmar, Thailand, Cambodia, Malaysia, Vietnam and parts of China; D. moluccana occurs in Java, Borneo, Sulawesi, the Moluccas, New Guinea, the Talaud Islands, the Lesser Sunda Islands and the Philippines; D. taylorii is known from Java.
Ecology
Duabanga species are large trees of lowland evergreen rainforest, growing as components of moist tropical forest throughout their range.
Taxonomy Notes
Duabanga was formerly classified in the small family Sonneratiaceae alongside the mangrove genus Sonneratia; it is now placed in its own monotypic subfamily, Duabangoideae, within Lythraceae — a placement corroborated by GBIF's taxonomic backbone (family Lythraceae, order Myrtales). Fossil wood from the Deccan Traps of Kutch, assigned to the genus Duabangoxylon, is considered closely related to extant Duabanga species.
