01260nas a2200133   4500008004100000245009000041210007200131300001000203490000700213520076700220100002200987700002001009856009701029       2010                        eng d00aCONTRIBUCIÓN AL ESTUDIO DE LAS LEMNÁCEAS DE HUELVA (ANDALUCÍA OCCIDENTAL, ESPAÑA)0 aCONTRIBUCIÓN AL ESTUDIO DE LAS LEMNÁCEAS DE HUELVA ANDALUCÍA OCC  a29-370 v303 aSummary. The main dimension of humid areas in Andalucia are present in Huelva province with 54.825 ha (77,39%). This richness and diversity in aquatic environments make possible the location of numerous aquatic plants, and the conservation of emblematic wetlands as Parque Nacional de Doñana, Paraje Natural Marismas del Odiel or Turberas de Las Madres. The distribution of 7 species of the Duckweed Family, present in the Huelva province (Occidental Andalusia, Spain), are studied. Lemna valdiviana Phil., an American species, is presented as a regional novelty for the Andalusian flora, and the known distribution of Wolffia arrhiza (L.) Horkel ex Wimm., Lemna trisulca L. and Spirodela polyrrhiza (L.) Schleind., 3 threatened species from Spain, is extended.1 aGullón, Sánchez1 ade Mera, Galán  uhttp://institucional.us.es/revistas/revistas/lagascalia/pdf/numeros/30/Lagascalia%2030-3.pdf