Resumo

DE LA SOTA, Elias Ramon; LUNA, María Lujan; GIUDICE, Gabriela Elena  e  RAMOS GIACOSA, Juan Pablo. Pteridophytic Flora of San Luis Province (Argentina). Bol. Soc. Argent. Bot. [online]. 2009, vol.44, n.3-4, pp.367-385. ISSN 1851-2372.

The aim of this study was to reveal the ferns and allied groups that inhabit at San Luis Province, Argentina. For this purpose different herbaria were consulted and a field trip was performed. In this province, a low diversity of species (42) in comparison to a relatively high diversity of genera (20) is registered. The more representative genera are Cheilanthes (8 taxa) and Blechnum (6 taxa). Six taxa are registered for the first time in San Luis. In this province Pteridophytes grow mainly at Sierras of San Luis and Comechingones, showing Andean-Pampasican (39 taxa), Southern-Brazilian (22 taxa) and Austral (9 taxa) floristic influences. The iconography, geographical distribution and ecology of each taxon are also given.

Palavras-chave : Argentina; Diversity; Pteridophytes; San Luis province.

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