Synopsis of Sida (Malvoideae, Malvaceae) in the state of Rio Grande do Sul, Brazil Author Grings, Martin Programa de Pós-Graduação em Botânica, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, Porto Alegre, Rio Grande do Sul, 91501 - 970, Brazil. Author Boldrini, Ilsi Iob Programa de Pós-Graduação em Botânica, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, Porto Alegre, Rio Grande do Sul, 91501 - 970, Brazil. text Phytotaxa 2022 2022-04-05 542 2 105 135 http://dx.doi.org/10.11646/phytotaxa.542.2.1 journal article 53645 10.11646/phytotaxa.542.2.1 8b5747ec-68d6-4c6a-a1a0-c0c1152b45cc 1179-3163 6415487

TABLE 1. Sections of Sida with species occurring in Rio Grande do Sul state, and their diagnostic features, according to Fryxell (1985) and Krapovickas (2003).

Diagnostic features
Section Cordifoliae	Leaf blades not rhomboid, basally cordate or subcordate, and serrate-crenate throughout. Mericarps, styles and stigma, 7 or more; the aristae, when present, with retrorse or stellate trichomes.
Section Distichifoliae	Stems with distichous lateral branching and leaf arrangement usually flattened; stipules subfalcate to falcate and subequal, dimorphic.
Section Malacroideae	Mericarps 5–7, often muricate; flowers and fruits apically congested with leaves and stipules so as to appear involucellate; leaf blades basally rounded, calyx not ribbed.
Section Nelavagae	Leaf blades cordate, apex acuminate; calyx lobes with dark green margins, bi-colored; five mericarps.
Section Sidae	Leaves more or less rhomboid, basally entire and truncate or cuneate, and distally dentate; mericarps 5–14, usually glabrous.
Section Spinosae	Leaf blades cordate, dentate to the base, apex acute to rounded; five mericarps, flowers in leaf axils, and calyx lobes not bi-colored, uniformly colored.
Section Stenindae	Leaf blades entire, narrowly linear or linear-lanceolate; flowers and fruits often aggregated into terminal umbelliform inflorescences, essentially leafless; and mericarps indehiscent.