9. Sida lonchitis A. Saint-Hilaire & Naudin (1842: 50) (Figures 2, 4K–Q, 14I).

Lectotype (designated by Krapovickas 2007a: 97):— BRAZIL. Rio de Janeiro, 1831-33, Gaudichaud 938 (P barcode 02285430! [digital image]; isolectotype P barcode 02285431! [digital image]).

Taxonomic notes: — Sida lonchitis is distinguished from other species of section Sidae (Table 1) by the flowers arranged in glomerules and by the presence of bifid bracts (Figures 4K–Q, 14I) (Krapovickas 2007a, Yoshikawa et al. 2019).

Distribution, habitat and conservation status: —The species occurs in southeast, south, and “Distrito Federal” of Brazil (Bovini 2020). The species is mentioned to Argentina by Krapovickas (2007), but without a voucher. In State of Rio Grande do Sul S. lonchitis was recorded only in Tropical Forest (Figure 2), in edges or ruderal environments. With the available records, the species presents an EOO of 1,030,158.204 Km² and an AOO of 120 Km². Although it can be considered EN by the AOO, conditions B(a), B(b) and B(c) were not met. Thus, the species is here considered Least Concern (LC).

Representative specimens: — BRAZIL. Rio Grande do Sul. Morrinhos do Sul, rio Negro, caminho para Morro de Dentro, 90 m, WGS 84 S -29.378807° W - 49.974588°, 02 January 2021, M. Grings & L. Gauer 2217 (ICN); Três Cachoeiras, Morro Azul, beira do rio Negro, 28 February 1984, K. Hagelund 14827 (ICN, HAS, HUCS).