Leafy liverworts of Chapada das Mesas National Park: a floristic survey and checklist of the leafy liverworts of Maranhão state, Brazil Author Silva, Jainara Pereira Laboratório de Sistemática Vegetal, Centro de Ciências Agrárias e Ambientais, Universidade Federal do Maranhão, Chapadinha, MA, Brazil Author Oliveira-da-Silva, Fúvio Rubens Programa de Pós-graduação em Ciências Biológicas, Botânica Tropical, Universidade Federal Rural da Amazônia / Museu Paraense Emílio Goeldi, Belém, PA, Brazil • FROS: oliveira. fuvio @ gmail. com https: // orcid. org / 0000 - 0002 - 4871 - 6740 &): 479 - 495. https: // doi. org / 10.15560 / 17.2.479 Author Ilkiu-Borges, Anna Luiza Museu Paraense Emílio Goeldi, Belém, PA, Brazil • ALIB: ilkiu-borges @ museu-goeldi. br https: // orcid. org / 0000 - 0002 - 1266 - 7211 Author Fernandes, Rozijane Santos Laboratório de Sistemática Vegetal, Centro de Ciências Agrárias e Ambientais, Universidade Federal do Maranhão, Chapadinha, MA, Brazil text Check List 2021 2021-03-11 17 1 479 495 journal article 10.15560/17.1.479 1809-127X 5380155 ** Cylindrocolea planifolia (Steph.) R.M.Schust. Material examined. BRAZIL • Maranhão , município de Carolina , Parque Nacional Chapada das Mesas , Pedra Caída–Cachoeira Pedra Furada, rupícola; 07°03′S , 047°28′W ; alt. 200 m ; 7 Feb. 2020 ; JAS Silva 579; CCAA 2353 . Identification. Plants light green to brownish, ca. 1 mm wide. Leaves succubous, inserted laterally on the stem, ovate, 2-lobed with acute or somewhat obtuse apex, margin entire, plane to slightly recurved; cells rectangular, trigones absent or minute, cuticle smooth. Underleaves lacking. In Brazil , three species are recognized, Cylindrocolea planifolia , C . ryzantha , and C. brasiliensis Costa et al. Differences between them are presented in the key by Costa et al. (2008) . Description and illustration. Fulford (1976: 399–401 , fig. 2).