Malvales is a diverse order of flowering plants, economically and ecologically relevant, and it is known for its broad morphological variability. Recent phylogenomic studies have revealed a complex evolutionary history for the order, including localised phylogenetic discordances among nuclear loci. However, since the late 1990s, Malvales classification has largely been neglected. This study aims to address this gap by revisiting the classification of Malvales, with a focus on its largest family, Malvaceae. By integrating phylogenomic and morphological datasets, our primary goals are to provide an updated phylogeny for the order and to map key traits supporting a revised suprageneric classification, while accounting for gene and species tree conflicts. Our molecular dataset included 194 genera and 309 nuclear genes, obtained through target sequence capture using Angiosperms353 probes. This dataset covers approximately half of the known genera in the order, representing all families and subfamilies, as well as nearly all tribes, and all subtribes. A coalescent approach utilising nuclear gene trees was used to infer phylogenetic relationships. A morphological matrix with 50 characters relevant for suprageneric classification was compiled, and character‐state distributions for selected traits were mapped against the phylogenetic tree to identify and discuss diagnostic features for clades. Phylogenetic relationships and the monophyly of most groups aligned closely with previous studies. Morphological traits that define key clades varied significantly across Malvales, with differences observed in growth habit, leaf structure, pollen type, floral features, and fruit/seed morphology. In Malvaceae, we resolved uncertainties in the early Malvoideae lineages, and we describe a new tribe, Pentaplareae tr. nov., which clarifies the taxonomic placement of a previously uncertain genus. Additionally, we propose the recognition of a new subfamily, Matisioideae subfam. nov., elevated from its former status as a tribe, and positioned as the sister group to Malvoideae. This study highlights how taxonomic frameworks can be refined even in the face of conflicting phylogenomic data, demonstrating the importance of integrating molecular and morphological evidence in revising classifications.

O presente trabalho compreende o levantamento florístico e o tratamento taxonômico das Malvaceae ocorrentes no Parque Estadual do Rio Doce. Foram realizadas excursões mensais no período de outubro de 1997 a janeiro de 1999 para coleta de material botânico. Os caracteres morfológicos do tubo estaminal, demonstraram ser úteis para o reconhecimento dos gêneros. Chaves acompanhadas de descrições, ilustrações, distribuição geográfica e comentários taxonômicos de cada táxon, foram realizadas. Dezenove táxons distribuídos em nove gêneros (Herissantia, Hibiscus, Malvastrum, Pavonia, Peltaea, Sida, Sidastrum, Urena e Wissadula), foram reconhecidos, sendo Sida o gênero mais representativo com sete espécies. Sida santaremensis Monteiro é nova citação de ocorrência para o Estado de Minas Gerais e Sida acuta var. obidensis Monteiro foi proposta como um sinônimo de Sida planicaulis Cav.

Quararibea bragae from the Atlantic Forest of Espírito Santo State (Brazil) is proposed as a new species. Quararibea bragae is similar to Q. turbinata in vegetative characteristics, such as the shape and consistency of its leaves and type of domatia. However, it can be distinguished by the leaves’ indumentum and by the positioning and quantity of domatia on the abaxial surface of the leaves. Reproductive characteristics are differentiated by the shape and indumentum of the staminal tube and the shape of the fruit. We present a morphological description and comments, illustration, notes on ecology and distribution, and identification key of Atlantic Forest species.

— The present study updates the taxonomy of Quararibea in the Atlantic Forest of Southeast Brazil. After 130 yr, Quararibea penduliflora has once again been reported in Rio de Janeiro State. A new combination is proposed, Q. angustifolia , and a new species, Q. similis , is described. Descriptions, species identification keys, illustrations, and a new analysis of the morphology of domatia, aimed at using its diagnostic potential to circumscribe the species studied here, are provided.

We propose a new species restricted to the Atlantic Forest from the Brazilian state of Espírito Santo, Callianthe capixabae. Morphological description, taxonomic comments, illustrations, distribution, habitat, and phenology are provided. C. capixabae is closely related to C. glaziovii and C. schenckii, but can be distinguished from them mainly by indument, inflorescence type, calyx nerves, corolla colour and fruit length.