Asplenium coronatum (Aspleniaceae), a new fern species from the Brazilian Atlantic Forest Author Reis, Atiles 0000-0002-2278-9669 Universidade Federal do Rio de Janeiro, Museu Nacional, Programa de Pós-graduação em Ciências Biológicas (Botânica), Quinta da Boa Vista, CEP 20940 - 046, Rio de Janeiro, RJ, Brazil & reisatiles @ gmail. com; https: // orcid. org / 0000 - 0002 - 2278 - 9669 reisatiles@gmail.com Author Lino, Vanessa 0000-0002-3510-6580 Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, Pacheco Leão 915, 22460 - 030, Rio de Janeiro, RJ, Brazil & https: // orcid. org / 0000 - 0002 - 3510 - 6580 Author Mynssen, Claudine Massi 0000-0002-1071-4707 Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, Pacheco Leão 915, 22460 - 030, Rio de Janeiro, RJ, Brazil & https: // orcid. org / 0000 - 0002 - 1071 - 4707 Author Sylvestre, Lana Da Silva 0000-0002-0486-0898 Universidade Federal do Rio de Janeiro, Instituto de Biologia, Departamento de Botânica, Av. Carlos Chagas Filho 373, 21941 - 902, Rio de Janeiro, RJ, Brazil & https: // orcid. org / 0000 - 0002 - 0486 - 0898 text Phytotaxa 2022 2022-11-29 574 2 185 190 http://dx.doi.org/10.11646/phytotaxa.574.2.8 journal article 198277 10.11646/phytotaxa.574.2.8 5ba1ce39-89a2-40b9-a0a7-82d75fc516b5 1179-3163 7380912 Key to Asplenium serratum complex from Atlantic Forest 1. Veins spreading at 35°–45° from the midrib ...................................................................................................... Asplenium angustum - Veins spreading at 60°–75° from the midrib ......................................................................................................................................2 2. Lamina margins dentate; stem scales 3.4–4.6 mm long, dark brownish ...................................................... Asplenium stuebelianum - Lamina margins entire, crenulate or serrate; stem scales over 7 mm long, light brownish to red .....................................................3 3. Lamina margins regularly serrate or crenate; proliferous apex absent; external cells of the stem scales with thickened walls.......... ............................................................................................................................................................................. Asplenium serratum - Lamina margins irregular, entire to slightly crenate; proliferous apex present; cells of the stem scales with walls regularly thickened............................................................................................................................................................ Asplenium coronatum