Tonka, baru and cumaru: Nomenclatural overview, typification and updated checklist of Dipteryx (Leguminosae)
2020
Silva de Carvalho, Catarina | Fraga, Cláudio Nicoletti de | B.O.S. Cardoso, Domingos | C. Lima, Haroldo
The papilionoid legume trees generally known as tonka, baru and cumaru comprise the taxonomically complex genus Dipteryx. In addition to being ecologically important across the neotropical biomes of rain forests and savannas, Dipteryx species are valuable sources of timber as well as an array of coumarin products. This genus currently comprises 14 accepted species with a convoluted nomenclatural history. Dipteryx is morphologically recognized by the flattened leaf rachis, asymmetrical leaflets, truly papilionate flowers, and drupaceous fruits. The generic name Dipteryx is conserved against Coumarouna and Taralea since Taralea is a heterotypic synonym and is accepted here as a distinct entity. We analyzed 65 names and designations that have been associated with Dipteryx and provide all orthographic variants, type localities, one new combination, 10 new lectotypes, one neotype, and one new synonym. Finally, we present an updated checklist of accepted and excluded names in Dipteryx. By highlighting the nomenclatural problems in Dipteryx, we hope the genus can serve as a model of how the typification process of older names linked primarily to Amazonian species should be treated.
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