Bryophytes of Serra da Capivara National Park, Piauí, Brazil Author Gomes do Nascimento, Géssica Maria Author Mendes da Conceição, Gonçalo Author Fernandes Peralta, Denilson Author Oliveira, Hermeson Cassiano de text Check List 2019 2019-09-27 15 5 833 845 http://dx.doi.org/10.15560/15.5.833 journal article 10.15560/15.5.833 1809-127X Riccia ridleyi A. Gepp , J. Linn. Soc., Bot. 27: 74. 1890 . Materials examined. Table 1 . Identification. Differentiated by the purple margin of the lobe. Habitat: rupicolous and terricolous. Brazilian range. PE . New record for Caatinga. Riccia stenophylla Spruce , Bull. Soc. Bot. France 36: 195. 1889 . Materials examined. Table 1 . Identification. Differentiated by very narrow thallus segments, 0.3–0.5 mm wide. Habitat: terricolous. Brazilian range. BA , CE , ES , GO , MA , MS , MT , PB , PE , PR , RJ , RS , SC , SP . Riccia wainionis Steph. , Bull. Soc. Bot. France 36: 195. 1889 . Materials examined. Table 1 Identification. Characterized by the colorless margin of the lobule and spores with 7 to 9 areolas of diameter. Habitat: terricolous. Brazilian range. BA , CE , ES , MG , PB , PE , PR , RJ , SE , SP .