Typifications in Scleria subgenus Scleria section Hymenolytrum (Cyperaceae) Author Schneider, Layla Jamylle Costa Universidade Federal Rural da Amazônia / Museu Paraense Emílio Goeldi; Programa de Pós-Graduação em Ciências Biológicas- Botânica Tropical, Avenida Perimetral 1901, Terra Firme, 66077 - 830, Belém, PA, Brazil Author Simões, André Olmos Universidade Federal Rural da Amazônia / Museu Paraense Emílio Goeldi; Programa de Pós-Graduação em Ciências Biológicas- Botânica Tropical, Avenida Perimetral 1901, Terra Firme, 66077 - 830, Belém, PA, Brazil & Universidade Estadual de Campinas-UNICAMP, Departamento de Biologia Vegetal, Instituto de Biologia, Rua Monteiro Lobato 255, CEP 13083 - 862, Cidade Universitária Zeferino Vaz, Campinas, SP, Brazil Author Dias, Ana Cristina Andrade De Aguiar 0000-0001-8779-3557 Universidade Federal Rural da Amazônia / Museu Paraense Emílio Goeldi; Programa de Pós-Graduação em Ciências Biológicas- Botânica Tropical, Avenida Perimetral 1901, Terra Firme, 66077 - 830, Belém, PA, Brazil & Universidade Federal do Pará, Instituto de Ciências Biológicas, Av. Perimetral, 2 - 224, 66075 - 110 Belém, PA, Brazil acaaguiar @ yahoo. com. br; https: // orcid. org / 0000 - 0001 - 8779 - 3557 acaaguiar@yahoo.com.br Author Gil, André Dos Santos Bragança Universidade Federal Rural da Amazônia / Museu Paraense Emílio Goeldi; Programa de Pós-Graduação em Ciências Biológicas- Botânica Tropical, Avenida Perimetral 1901, Terra Firme, 66077 - 830, Belém, PA, Brazil & Museu Paraense Emílio Goeldi - MPEG, Campus de Pesquisa, Coordenação de Botânica - COBOT, Av. Perimetral 1901, Terra Firme, 66077 - 830, Belém, PA, Brazil text Phytotaxa 2023 2023-07-31 606 3 170 184 http://dx.doi.org/10.11646/phytotaxa.606.3.1 journal article 10.11646/phytotaxa.606.3.1 1179-3163 8202558 Scleria boivinii Steudel (1855:173) . Lectotype (designated here):— MADAGASCAR . Sta. Maria : s.d. , fl. and fr., Boivin 1643 ( P [00346034 photo!] [ Fig.1 ]; isolectotypes K [000363353]!, MO [2302303] photo!, P [00346035] photo!, P [00346036] photo! and P [04021507] photo!). Steudel (1855) described Scleria boivinii as an erect herb with apterous leaf sheaths, the presence of a membranous appendage in the apex of the contraligule, leaf blades thin, strongly retrorsely scabrous, inflorescence paniculate and lax with numerous staminate and sparsely pistillate spikelets inserted at the base of the branches, fruits ovoid, smooth, shiny and white, and hypogynium slender, entire, undulate. That same author cited a collection in Boivin’s herbarium (number 1643) from the island of Santa Maria , Madagascar . Boivin’s main collections are currently in herbarium P ( Stafleu & Cowan 1976 ). When searching for the collection cited by Steudel (1855) , six specimens were found in the P, K and MO herbaria with the same collection number (1643) cited in the protologue of S. boivinii , which has no clear indication of the holotype , making them syntypes ( Turland et al. 2018 ). The specimens present in P have typification labels, with “P 04021507 ” having a “type” label and the remaining specimens having an “isotype” label. In a review of Scleria from Madagascar , Díaz et al. (2019) elected “P 04021507 ” as the lectotype of S. boivinii , but did not validate the typification (as they omitted the term “designated here” or any equivalent) ( Turland et al. , 2018 ). In such a situation, lectotypification is still required and fundamental for the stability of the name. The specimen “P 04021507 ”, elected by Díaz et al. (2019) , does not present fruits, which are essential elements for the taxonomic diagnosis of Scleria . We therefore designate here the specimen “P00346034”, which has flowers and fruits, as the lectotype for a better application of the name and a better correspondence with the protologue of S. boivinii .