Resumen

JARSUN, A.M. et al. Ferns and lycophytes: an update on the flora of the Valle de Lerma- Salta, Argentina. Polibotánica [online]. 2020, n.49, pp.1-14.  Epub 20-Jun-2020. ISSN 1405-2768.  https://doi.org/10.18387/polibotanica.49.1.

The Lerma Valley is located in the center of the province of Salta, Argentina. Its vegetation corresponds to two phytogeographic domains, Amazonian domain and Chaco domain. An updated list of the diversity of ferns and lycophytes is presented as a result of new collections and a review of herbarium specimens and specific bibliography. We registered 115 taxa, 107 ferns, and 8 lycophytes, belonging to 16 and 2 families respectively, which correspond to an increase of 22 new taxa compared to the original flora. Three records are cited for the first time for the northwest region of Argentina, Microgramma vaccinifolia, Pellaea atropurpurea and Pteris multifida. The three best-represented families are Pteridaceae with 34 taxa, Polypodiaceae with 19, and Aspleniaceae with 14. Of the 115 taxa identified, 110 belong to the native flora and five are naturalized species.

Palabras llave : Argentina; Amazonian domain; Chaco domain; Polypodiaceae; Pteridaceae.