Taxonomic revision and phylogenetic relationships of Thinouia (Sapindaceae), a neotropical genus

By

Medeiros, Herison
Acevedo-Rodríguez, Pedro
Lopes, Jenifer
Forzza, Rafaela Campostrini

Type

Article

Date of Publication

2025

Original Publication

PhytoKeys

Volume

252

Pages

207--273

Subjects

Lianas , neotropical flora , Paullinieae , Sapindales , Sapindoideae

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers [2010]-

Identifiers

DOI: https://doi.org/10.3897/phytokeys.252.129621

 

Abstract

A taxonomic revision of Thinouia (Sapindaceae) is presented, including typification and descriptions for all accepted species. Phylogenetic analyses based on molecular data confirm that the genus is monophyletic and suggest two main clades with T. cazumbensis sister to the other species of the genus. Thirteen species of Thinouia are accepted, including a new species from Amazonia. The genus is distributed across continental tropical America, with its highest diversity found in South America. Its species can be distinguished by morphological details of leaves, indumentum, inflorescences, flowers, and fruits. We present a comprehensive review of the morphology and geographical distribution of the genus, along with an identification key, distribution maps, conservation risk assessments, illustrations, and comments on the ecology and taxonomy for all species, gathered from the literature and fieldwork.