New Records of Ferns from Northeastern Argentina and Uruguay

MEZA TORRES E. I., H. KELLER & C. BRUSSA

AMERICAN FERN JOURNAL

AMER FERN SOC INC

Año: 2010 vol. 100 p. 183 - 187

0002-8444

Four records of ferns are reported here for the first time, two species for northeastern Argentina and two thers or Uruguay. In addition, the occurrence of other species is documented with herbarium specimens for both  countries. The new distribution records are supported by recent collections done by the authors and by specimens studied at CTES Herbarium. The collections that document the distribution extensions for Argentina come from Misiones. This area belongs to the Amazonian domain (Cabrera and Willink, Biogeografý´a de Ame´rica Latina, Serie Biologý´a 13, Secretarý´a de la OEA, pp. 117. Washington D.C. 1973), and it represents the greatest center of pteridophyte diversity in Argentina (Ponce et al., Revista Chilena Hist. Nat. 75: 703–717. 2002). Uruguay is inside the ‘‘Chaquen˜ o’’ phytogeographical domain, in the ‘‘Pampeana’’ province of Cabrera and Willink (1973), which is characterized principally by grass prairies. This country presents a high level of diversity of ligneous species, probably due to high variability of environments across short distances, and also because of sharing a connection with Brazil’s southern flora. The floristic connection raises the possibility that many species should  reach the limit of their natural distributions in Uruguay (Brussa and Grela, Flora arbo´ rea del Uruguay. Con e´nfasis en las especies de Rivera y Tacuarembo´ , pp. 65, COFUSA, Montevideo. 2007). Since the works published by Osten and Herter (Anales Mus. Hist. Nat. Montevideo ser. 2, 3:109–256. 1925) and Legrand and Lombardo (Flora del Uruguay I, Pteridophyta, Museo Nacional de Historia Natural, Montevideo, pp. 67. 1958), few contributions have been made to the pteridophyte flora of Uruguay. The Catalogue of Vascular Plants of the Southern Cone edited by Zuloaga, Morrone and Belgrano (Monogr. Syst. Bot. Missouri Bot. Gard., vol. 1. 2008) overlooks part of the diversity of ferns and lycophytes present in this country; with this note, a small step is taken to fill in this gap. Flora arbo´ rea del Uruguay. Con e´nfasis en las especies de Rivera y Tacuarembo´ , pp. 65, COFUSA, Montevideo. 2007). Since the works published by Osten and Herter (Anales Mus. Hist. Nat. Montevideo ser. 2, 3:109–256. 1925) and Legrand and Lombardo (Flora del Uruguay I, Pteridophyta, Museo Nacional de Historia Natural, Montevideo, pp. 67. 1958), few contributions have been made to the pteridophyte flora of Uruguay. The Catalogue of Vascular Plants of the Southern Cone edited by Zuloaga, Morrone and Belgrano (Monogr. Syst. Bot. Missouri Bot. Gard., vol. 1. 2008) overlooks part of the diversity of ferns and lycophytes present in this country; with this note, a small step is taken to fill in this gap. Flora arbo´ rea del Uruguay. Con e´nfasis en las especies de Rivera y Tacuarembo´ , pp. 65, COFUSA, Montevideo. 2007). Since the works published by Osten and Herter (Anales Mus. Hist. Nat. Montevideo ser. 2, 3:109–256. 1925) and Legrand and Lombardo (Flora del Uruguay I, Pteridophyta, Museo Nacional de Historia Natural, Montevideo, pp. 67. 1958), few contributions have been made to the pteridophyte flora of Uruguay. The Catalogue of Vascular Plants of the Southern Cone edited by Zuloaga, Morrone and Belgrano (Monogr. Syst. Bot. Missouri Bot. Gard., vol. 1. 2008) overlooks part of the diversity of ferns and lycophytes present in this country; with this note, a small step is taken to fill in this gap. Flora arbo´ rea del Uruguay. Con e´nfasis en las especies de Rivera y Tacuarembo´ , pp. 65, COFUSA, Montevideo. 2007). Since the works published by Osten and Herter (Anales Mus. Hist. Nat. Montevideo ser. 2, 3:109–256. 1925) and Legrand and Lombardo (Flora del Uruguay I, Pteridophyta, Museo Nacional de Historia Natural, Montevideo, pp. 67. 1958), few contributions have been made to the pteridophyte flora of Uruguay. The Catalogue of Vascular Plants of the Southern Cone edited by Zuloaga, Morrone and Belgrano (Monogr. Syst. Bot. Missouri Bot. Gard., vol. 1. 2008) overlooks part of the diversity of ferns and lycophytes present in this country; with this note, a small step is taken to fill in this gap.