Croton (Euphorbiaceae) of the Brazilian state of Paraná: an annotated checklist, species distribution, and identification key Author Pereira, Amanda Da Paixão Noronha 0000-0003-4874-129X Instituto de Pesquisas Ambientais, Núcleo de Pesquisa Curadoria do Herbário, São Paulo, SP 01061 - 970, Brazil & Universidade Federal de São Paulo, Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Departamento de Ecologia e Biologia Evolutiva, 09972 - 270, Diadema, SP, Brazil. & amanda. pnoronhap @ gmail. com; https: // orcid. org / 0000 - 0003 - 4874 - 129 X amanda.pnoronhap@gmail.com Author Riina, Ricarda 0000-0002-7423-899X Real Jardín Botánico (RJB), CSIC, Plaza de Murillo 2, 28014, Madrid, Spain. & rriina @ rjb. csic. es; https: // orcid. org / 0000 - 0002 - 7423 - 899 X rriina@rjb.csic.es Author Caruzo, Maria Beatriz Rossi 0000-0002-8393-214X Instituto de Pesquisas Ambientais, Núcleo de Pesquisa Curadoria do Herbário, São Paulo, SP 01061 - 970, Brazil & Universidade Federal de São Paulo, Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Departamento de Ecologia e Biologia Evolutiva, 09972 - 270, Diadema, SP, Brazil. & mbrcaruzo @ unifesp. br; https: // orcid. org / 0000 - 0002 - 8393 - 214 X mbrcaruzo@unifesp.br text Phytotaxa 2022 2022-10-28 570 3 231 274 http://dx.doi.org/10.11646/phytotaxa.570.3.1 journal article 176492 10.11646/phytotaxa.570.3.1 e5151877-6fa0-44de-b9c3-4577de526c95 1179-3163 7260277 31. Croton serpyllifolius Baillon (1864: 355) . Lectotype (first step designated by Lima & Pirani 2008b , second step designated here): — BRAZIL . São Paulo : “près d’un ruisseau, dans le voisinage d’Eyneja-Villa”, s.d., A. Saint-Hilaire cat. C2 1495 ( P 00634713 !; isolectotypes P 00634714!, SP 000664!, F 0092877!) . Remaining syntype : — BRAZIL . “bords du chemin près de Rincao da Cidade”, s. dat., A. Saint-Hilaire cat. C2 1580 (P 00634715!) ( Fig. 17 , A–E). Croton serpyllifolius is a shrub that can be confused with C. chamaepitis and C. pycnocephalus (see Table 1 ). According to Lima & Pirani (2008b) , the species is endemic to the state of São Paulo . However, Paraná specimens show morphological characters in agreement with the information of the protologue and type collections, corroborating the information from Caruzo & Cordeiro (2007) , who recognized the occurrence of the species in Paraná . The species belongs to section Lamprocroton subsect. Argentini . Distribution and habitat:— It occurs in south ( PR , SC) and southern (SP) ( Caruzo et al. 2020 ), where it grows in open vegetation (‘campo limpo’), between 800 and 1050 m elevation ( Fig. 16 ). Phenology:— Flowering from March and September, and fruiting in October and November. Representative specimens:— PARANÁ : Balsa Nova , Ponte dos Arcos , 25°33’16”S , 49°48’11”W , 808 m , 18 December 2013 , J . T . Motta , L . T . Dombrowski , J . Cordeiro & D. P . Saridakis 4204 ( HCF , MBM , RB ). Palmeira , Estrada Rodovia Palmeira-Ponta Grossa , 12 October 1959 , G . Hatschbach 6482 ( MBM ). Ponta Grossa , Fazenda Barrozinho , 07 September 1967 , G . Hatschbach 17093 ( MBM ). Tibagi , Taipa de Pedra , 19 October 1993 , G . Hatschbach & J . Cordeiro 59670 ( MBM ). Idem , Parque Estadual do Guartelá , Rio Iapó , 02 September 1996 , S . R . Ziller 1573 ( ESA , MBM ) .