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 10. Croton eichleri Müller Argoviensis (1873: 272) . Lectotype (designated by Santos et al. 2017 ): — BRAZIL . Minas Gerais : “ Habitat ad Porto do Rio Cervo inter Ouro fino et Caldas ”, s.d., A.F. Regnell II 242 ( P 00623149 ; isolectotypes P 00623148!, A 00257923!, BR 0000008766496!, BR 0000008766823!, C 10011167!, F 0056120F!, F 0093628F!, S 07-12794!, S 07-12795!, S 07-12796!, S 07-12797, US 00902151!, US 00902150!). ( Fig. 5 , J–O) This tree can be recognized by its stipitate acropetiolar nectary glands, reduplicate-valvate aestivation on staminate and pistillate flowers, and strongly muricate fruits. Some specimens of Croton eichleri have been identified erroneously in herbaria as C. floribundus . However, these species differ by the presence of acropetiolar nectary glands (present in C. eichleri vs. absent in C. floribundus ), leaf base (cordate in C. eichleri vs. rounded in C. floribundus ), staminate flowers aestivation (reduplicate-valvate in C. eichleri vs. valvate in C. floribundus ), and style division (tetrafid in C. eichleri vs. multifid in C. floribundus ). The species is a member of Croton sect. Prisci ( van Ee et al. 2011 ) . Distribution and habitat:— It occurs in southern ( PR ) and southeastern (MG, RJ ) Brazil ( Santos et al. 2017 , Caruzo et al. 2020 ), along edges of semideciduous seasonal forest, between 600 and 920 m elevation ( Fig. 6 ). Phenology:— Flowering from October to December, and fruiting in February. Representative specimens:— BRAZIL . Paraná : Jaguariaíva , fazenda para acesso ao Rio das Mortes , 24°13’43.06”S , 49°39’05.36”W , 918 m , 22 October 2016 , A . P . N . Pereira , F . S . Petrongari & O . L . M . Silva 43 ( SP ). Pitanga , Propriedade de Eugênio Pedrini , 13 December 2005 , M . G . Caxambu 940 ( CGMS , DVPR , HCF ). Ortigueira , 15 December 2011 , R . A . Bonaldi 492 ( RB , SP ). Idem , Vila Palmital , 10 December 2012 , M . Selusniaki & E . D. Lozano 3509 ( HCF ). São Jerônimo da Serra , Sítio Três Meninas , 07 December 1999 , O . C . Pavão s.n. ( FUEL 28341 ) .