Nomenclatural revision of Cryptantha (Boraginaceae s. str.) names linked to South American taxa Author Moroni, Pablo https://orcid.org/0000-0001-5306-476X Instituto de Botanica Darwinion (ANCEFN-CONICET), Labarden 200, CC 22, B 1642 HYD, San Isidro, Buenos Aires, Argentina pmoroni@darwin.edu.ar Author Martinez, Agustina https://orcid.org/0000-0002-4768-664X Instituto de Botanica Darwinion (ANCEFN-CONICET), Labarden 200, CC 22, B 1642 HYD, San Isidro, Buenos Aires, Argentina Author Simpson, Michael G. https://orcid.org/0000-0002-6197-2132 Department of Biology, San Diego State University, San Diego, California 92182, USA text PhytoKeys 2021 2021-08-30 181 29 47 http://dx.doi.org/10.3897/phytokeys.181.69740 journal article http://dx.doi.org/10.3897/phytokeys.181.69740 1314-2003-181-29 25B16C1AE4375702BC69E64E28291B0A 6. Cryptantha chaetocalyx (Phil.) I.M. Johnst., Contr. Gray Herb. 78: 43. 1927. Cryptantha chaetocalyx ≡ Eritrichium chaetocalyx Phil., Fl. Atacam. 39. 1860. Type: Chile. Region de Atacama: Caldera, Pan de Azucar , Dec. 1853, R.A. Philippi s.n. (first-step lectotype, designated by Johnston 1927 , pg. 43: SGO; second-step lectotype, designated here: SGO [SGO000004073 digital image!]; isolectotypes: GH [GH00096375 digital image!], SGO [SGO000004050 digital image!]). Cryptantha chaetocalyx = Eritrichium divaricatum Phil., Anales Univ. Chile 90: 534. 1895. Cryptantha divaricata (Phil.) Reiche, Anales Univ. Nac. Tec. Altiplano 121: 827. 1907. Type: Chile. Region de Atacama: Caldera, Sep. 1885, F. Philippi s.n . (first-step lectotype, designated by Johnston 1927 , pg. 43: SGO; second-step lectotype, designated here: SGO [SGO000004070 digital image!]; isolectotypes: GH [GH00096373 digital image!], SGO [SGO000004071 digital image!]). Cryptantha chaetocalyx = Eritrichium pustulosum Phil., Anales Univ. Chile 90: 537. 1895. Type: Chile. Region de Atacama: Caldera, Sep. 1879, R.. Philippi s.n . (first-step lectotype, designated by Johnston 1927 , pg. 43: SGO; second-step lectotype, designated here: SGO [SGO000004125 digital image!]; isolectotypes: GH [GH00096374 digital image!], SGO [SGO000004126 digital image!], SGO [SGO000004127 digital image!]). Notes. In describing Eritrichium chaetocalyx , Rudolph A. Philippi (1860) cited a gathering he made near Pan de Azucar , Chile. Two duplicates of the type collection in agreement with the protologue and annotated by him as " Eritrichium chaetocalyx " were located at SGO. Johnston (1927) discussed this name and its original material, referring to a sheet lodged at SGO as the "type" of the name. In this context, Johnston's (1927) statement must thus be considered as a first-step typification. Thus, in order to narrow this designation, the sheet SGO000004073 is here selected as a second-step lectotype. In the protologue of Eritrichium divaricatum , Rudolph A. Philippi (1895) cited as type material a collection made by F. Philippi in Caldera, Chile. Johnston (1927) referred to a specimen kept at SGO as the "type" of the name, although two sheets annotated, in R. A. Philippi's hand, as " Eritrichium divaricatum " are found there. This situation determines that Johnston's (1927) statement must be considered as a first-step lectotypification. In this context, the duplicate SGO000004070 is here selected as a second-step lectotype (Art. 9.17 of the ICN; Turland et al. 2018 ). Rudolph A. Philippi (1895) described Eritrichium pustulosum based on a specimen he collected in Caldera, Chile. According to Johnston (1927) , the type material of the name is lodged at SGO. However, three sheets linked to E. pustulosum , in agreement with the protologue, were located at SGO, which can certainly be considered as original material. In this context, Johnston's (1927) statement must be considered as a first-step lectotypification. In order to narrow this earlier designation, the sheet SGO000004125 is here selected as a second-step lectotype.