Sida dubia A. Saint-Hilaire & Naudin (1842: 50)
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publication ID |
https://doi.org/ 10.11646/phytotaxa.542.2.1 |
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DOI |
https://doi.org/10.5281/zenodo.6415534 |
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persistent identifier |
https://treatment.plazi.org/id/8F4F879B-0B79-1648-78DD-FF5C259EFC79 |
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treatment provided by |
Plazi |
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scientific name |
Sida dubia A. Saint-Hilaire & Naudin (1842: 50) |
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5. Sida dubia A. Saint-Hilaire & Naudin (1842: 50) View in CoL ( Figures 2 View FIGURE 2 , 3F–J View FIGURE 3 , 14G View FIGURE 14 ).
Holotype:— BRAZIL. s.l., s.d., C. Gaudichaud 1220 ( P barcode 02285395! [digital image]).
= Sida multicrena Hochreutiner (1905: 295) View in CoL Holotype:— PARAGUAY. In campo Apepu (Tapiraguay), Aug., Hassler 4351 (G barcode 00306074! [digital image]).
Taxonomic and nomenclatural notes: —The species S. multicrena , was synonymized by Krapovickas (2005), which we agree after analyzing the types of both. Sida dubia belongs to section Cordifoliae by the indument densely stellate-tomentose; leaf blades lanceolate, dentate-crenate throughout, basally more or less cordate, features pointed out by Fryxell (1985) for this section ( Table 1 View TABLE 1 ). The species can be recognized by its erect habit, pink corolla (rarely yellow), 11–13 mericarps with aristae 1–3 mm long ( Figures 3F–J View FIGURE 3 , 14G View FIGURE 14 ).
Distribution, habitat and conservation satus: — Sida dubia occurs in northeastern Argentina, Paraguay, Uruguay, and Brazil ( Krapovickas 2005, Zuloaga et al. 2008, Bovini 2020). Specifically in Brazil, the species occurs only in State of Rio Grande do Sul, in Shallow soil grassland, Bush grassland, Inland sub-montane grassland, Sandy grassland, Coastal grassland, and Aristida grassland ( Figure 2 View FIGURE 2 ). With the available records, the species presents an EOO of 298,741.879 Km² and an AOO of 400 Km². Although it can be considered EN by the AOO, conditions B(a), B(b) and B(c) were not met. Therefore, the species is here considered Least Concern (LC). However the situation of the species must be monitored, since it is restricted to Pampa grasslands which has suffered great losses in area (30% from 1985 to 2019) due to conversion to crops in the state of Rio Grande do Sul, Brazil ( Andrade et al. 2015, Mapbiomas 2020).
Representative specimens: — BRAZIL. Rio Grande do Sul. Alegrete, Reserva Biológica do Ibirapuitã S 29º54’59.5” W 55º46’00.0”, 14 December 2009, M. Grings & R. Paniz 1916 ( ICN); Cerro Largo, São Luiz, January 1943, P. Buck s.n. ( PACA 11127 About PACA ); Mostardas, Lagoa do Peixe , 21 February 1970, E. Vianna et al. s.n. ( ICN 7529 View Materials ); Porto Alegre, Morro Teresópolis, 27 May 1980, S. Martins 315 ( ICN); Santana da Boa Vista , BR 392 , WGS 84 S 30º47’54.3” W 053º11’24.9”, 23 November 2018, M . Grings & J . Schaefer 1975 ( ICN); São Francisco de Assis, Gruta São Tomé , 20 April 2008, E . Mundeleski 58 ( ICN) .
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University of Copenhagen |
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Museum National d' Histoire Naturelle, Paris (MNHN) - Vascular Plants |
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Department of Botany, Swedish Museum of Natural History |
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Botanische Staatssammlung München |
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Departamento de Geologia, Universidad de Chile |
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Instituto de Ciencias Naturales, Museo de Historia Natural |
| E |
Royal Botanic Garden Edinburgh |
| J |
University of the Witwatersrand |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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SubFamily |
Malvoideae |
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Genus |
Sida dubia A. Saint-Hilaire & Naudin (1842: 50)
| Grings, Martin & Boldrini, Ilsi Iob 2022 |
Sida multicrena
| Hochreutiner 1905: 295 |