page_title: Tabebuia
section_title: Taxonomic history
hierarchical_section_title: Tabebuia / Taxonomic history
caption_attribution_description: Tabebuia pallida dans le Jardin de l'État de Saint-Denis.
context_page_description: Tabebuia is a genus of flowering plants in the family Bignoniaceae. The common name "roble" is sometimes found in English. Tabebuias have been called "trumpet trees", but this name is usually applied to other trees and has become a source of confusion and misidentification.
  Tabebuia consists almost entirely of trees, but a few are often large shrubs. A few species produce timber, but the genus is mostly known for those that are cultivated as flowering trees.
  Tabebuia is native to the American tropics and subtropics from Mexico and the Caribbean to Argentina. Most of the species are from Cuba and Hispaniola. It is commonly cultivated and often naturalized or adventive beyond its natural range. It easily escapes cultivation because of its numerous, wind-borne seeds.
  In 1992, a revision of Tabebuia described 99 species and one hybrid. Phylogenetic studies of DNA sequences later showed that Tabebuia, as then circumscribed, was polyphyletic. In 2007, it was divided into three separate genera. Primavera and a related species with no unique common name were transferred to Roseodendron. Those species known as ipê and pau d'arco or poui were transferred to Handroanthus.
context_section_description: The name Tabebuia entered the botanical literature in 1803, when António Bernardino Gomes used it as a common name for Tabebuia uliginosa, now a synonym for Tabebuia cassinoides, which he described as a species of Bignonia. Tabebuia is an abbreviation of "tacyba bebuya", a Tupi name meaning "ant wood". Among the Indigenous peoples in Brazil, similar names exist for various species of Tabebuia.
  Tabebuia was first used as a generic name by Augustin Pyramus de Candolle in 1838. The type species for the genus is Tabebuia uliginosa, which is now a synonym for Tabebuia cassinoides. Confusion soon ensued over the meaning of Tabebuia and what to include within it. Most of the misunderstanding was cleared up by Nathaniel Lord Britton in 1915. Britton revived the concept of Tabebuia that had been originated in 1876 by Bentham and Hooker, consisting of species with either simple or palmately compound leaves. Similar plants with pinnately compound leaves were placed in Tecoma. This is the concept of Tabebuia that was usually followed until 2007.
  The genus Roseodendron was established by Faustino Miranda González in 1965 for the two species now known as Roseodendron donnell-smithii and Roseodendron chryseum. These species had been placed in Cybistax by Russell J. Seibert in 1940, but were returned to Tabebuia by Alwyn H. Gentry in 1992.
  Handroanthus was established by Joáo Rodrigues de Mattos in 1970. Gentry did not agree with the segregation of Handroanthus from Tabebuia and warned against "succumbing to further paroxysms of unwarranted splitting". In 1992, Gentry published a revision of Tabebuia in Flora Neotropica, in which he described 99 species and 1 hybrid, including those species placed by some authors in Roseodendron or Handroanthus. Gentry divided Tabebuia into 10 "species groups", some of them intentionally artificial. Tabebuia, as currently circumscribed, consists of groups 2,6,7,8,9, and 10. Group 1 is now the genus Roseodendron. Groups 3,4, and 5 compose the genus Handroanthus.
  In 2007, a molecular phylogenetic study found Handroanthus to be closer to a certain group of four genera than to Tabebuia. This group consists of Spirotecoma, Parmentiera, Crescentia, and Amphitecna. A phylogenetic tree can be seen at Bignoniaceae. Handroanthus was duly resurrected and 30 species were assigned to it, with species boundaries the same as those of Gentry (1992).
  Roseodendron was resolved as sister to a clade consisting of Handroanthus and four other genera. This result had only weak statistical support, but Roseodendron clearly did not group with the remainder of Tabebuia. Consequently, Roseodendron was resurrected in its original form. The remaining 67 species of Tabebuia formed a strongly supported clade that is sister to Ekmanianthe, a genus of two species from Cuba and Hispaniola. Tabebuia had been traditionally placed in the tribe Tecomeae, but that tribe is now defined much more narrowly than it had been, and it now excludes Tabebuia. Tabebuia is now one of 12 to 14 genera belonging to a group that is informally called the Tabebuia alliance. This group has not been placed at any particular taxonomic rank.
  Cladistic analysis of DNA data has strongly supported Tabebuia by Bayesian inference and maximum parsimony. Such studies have so far revealed almost nothing about relationships within the genus, placing nearly all of the sampled species in a large polytomy.
caption: Trunk of Cuban Pink Trumpet Tree (Tabebuia pallida)
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