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 22. Sida urens Linnaeus (1759: 1145) ( Figures 12A–E , 13 , 14U ) Lectotype (designated by Rodrigo 1944 : t. 17):— JAMAICA . Browne s.n. (LINN 866.20 ! [digital image]). Taxonomic notes: —The species belongs to section Nelavagae and is characterized by the presence of muticous or submuticous mericarps, stems with glandular trichomes and with long simple trichomes, and by decumbent or scandent habit ( Figures 12A–E , 14U ; Table 1 ) ( Krapovickas 2006 ). Distribution, habitat and conservation status: — Sida urens has a wide distribution, and occurs in tropical Africa, the Caribbean, and tropical America, from southern Florida and Mexico to northern Argentina and Brazil , where it is found in all regions, but not in all states ( Krapovickas 2006 , Brandão et al. 2017 , Bovini 2020 ). In Rio Grande do Sul the species occurs in Aristida grassland, Park grassland, Inland subtropical grassland, Coastal grassland, Araucaria Forest, Coastal subtropical Forest and in Tropical Forest, in ruderal environments and anthropized grasslands ( Figure 13 ). The species is here considered Least Concern (LC) because it has large EOO and AOO, since it is a frequent and often ruderal species and is present in more than one continent. Representative specimens: — BRAZIL . Rio Grande do Sul . Barra do Ribeiro , Coxilha das Lombas , WGS 84 - 30.291099º S - 51.301101º W , 15 December 2008 , M . Grings 652 ( ICN ); Derrubadas , Parque Estadual do Turvo , acesso 2, alojamento, 436 m , WGS 84 - 27.249794º S - 53.949206º W , 03 Ocotober 2015, F . Gonzatti 2183 ( HUCS ); Maquiné , E . E . F ., June 1992 , N . Silveira 11520 ( HAS !) ; Monte Belo do Sul , Linha 80 da Leopoldina , 470 m , WGS 84 - 29.162799º S - 51.631698º W , 16 March 2015 , F . Gonzatti 2038 ( ICN ); Santa Maria , Distrito Boca do Monte , próximo ao Balneário Timbaúva , 175 m , WGS 84 - 29.699722º S - 54.045833º W , 26 December 2018 , M . Grings et al. 2002 ( ICN ); São Miguel das Missões , 251 m , S-28.404444 , W-54.542778 WGS84, 09 February 2011 , A . A . Schneider 1726 ( ICN !); Sapiranga , Morro Ferrabráz , próximo ao monumento Muckers , WGS 84 - 29.638099º S - 51.006900º W , 04 October 2008 , M . Grings 654 ( ICN , HUCS ); Torres , Morro do Elisário ( Morro do Tamburiki ), WGS 84 - 29.374769° S - 49.792087° W , 20 April 2019 , M . Grings 2074 ( ICN ) .