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.pdf00945nas a2200133   4500008004100000245007400041210007000115260001100185300001000196490000700206520044900213100002400662856012500686       2007                        eng d00aHerkenning van de vier in België voorkomende drijvende Lemna-soorten0 aHerkenning van de vier in België voorkomende drijvende Lemnasoor  c5/2007  a16-200 v913 aIdentification of floating Lemna species in Belgium. Due to a newly found Lemna, Lemna turionifera, in Belgium we had a closer look at the different species of Lemna that float on the water's surface (Lemna gibba, L. minor, L. turionifera and L. minuta). The determination of those species can be difficult. This article aims to remove some of the problems in identification by presenting techniques that highlight more visible characteristics.1 aVan Landuyt, Wouter  uhttps://alienplantsbelgium.myspecies.info/content/herkenning-van-de-vier-belgi%C3%AB-voorkomende-drijvende-lemna-soorten