A lineage‐based infrageneric classification of Turnera (Turneraceae)

Abstract

A comprehensive molecular phylogenetic study of Turneraceae showed that Turnera, the largest genus in the family, should be recircumscribed and divided into 11 series. Here, we propose a lineage-based classification for the genus, including the description of two new series (ser. Cristatae, ser. Rinoreifoliae) and a new subseries in ser. Turnera (subser. Macronectariae). A list of 130 species (and 42 infraspecific taxa) currently accepted and a key to the series and subseries of Turnera are provided.

Turnera carolina (Turneraceae, Passifloraceae s.l.): A New Species from Chapada das Mesas, Maranhão, Northeastern Brazil

“…(included in the Passifloraceae s.l. ; sensu APG IV 2016) span 14 genera and 232 species (Rocha et al 2020b), being generally recognized by the heterostylous flowers and by the gynoecium with three styles with divided stigma (Arbo 2007). The family is distributed over the tropical and subtropical zones of the Americas, Madagascar (East Africa), and the Mascarene Islands, ca.…”

“…900 km east from Madagascar (Arbo 2007;Thulin et al 2012). In Brazil, Turneraceae is represented by three genera, Oxossia L.Rocha, Piriqueta Aubl., and Turnera L., accounting for 164 species, 116 of which are endemic (Rocha et al 2023) Turnera is the richest genus of its family, encompassing 132 species, 130 of which occur from southeast USA to Argentina, and only two in Madagascar (Arbo et al 2015;Rocha et al 2020b). The genus is recognized mainly by its simple (rarely stellate) trichomes, generally inconspicuous stipules, leaves that frequently bear extrafloral nectaries (on base of leaf blade or on petiole), sessile flowers without a corona, and petals that are usually yellow (Rocha et al 2019).…”