Preliminary check list of Albuginales and Peronosporales (Chromista) reported from the Iberian Peninsula and Balearic Islands

(ENG) The scrutiny of ca. 188 publications issued between 1867 and 2005 revealed that ca. 1500 fungus/host combinations of white rusts and downy mildews (Albuginales and Peronosporales) have been reported from Iberian Peninsula and Balearic Islands. The fungi belong to 13 genera and 101 species, and are parasitic on 266 plants belonging to 146 genera and 32 families. The hosts represent about 3.3 % of the total number of plants known from this territory. It is concluded that the probable number of fungi belonging to these two orders should be sensibly higher in this area, and that more collecting is necessary. Introduction The records of Albuginales (white rusts) and Peronosporales (downy mildews) reported from Iberian Peninsula and Balearic Islands are scattered over nearly 200 publications issued between 1867 and 2005. The first record seems to be that of Albugo candida by Colmeiro (1867a). Major contributions and/or preliminary lists for Portugal (Traverso & Spessa 1910, Câmara et al. 1936, Câmara & Oliveira 1944, Lucas & Dias 1976, Lucas et al. 1982) and Spain (González Fragoso 1916, Lázaro e Ibiza 1920) were also published, and the first list regarding the whole peninsula is due to González Fragoso (1924b). A rather recent review, though incomplete and restricted to the genus Peronospora, is that by Gustavsson (1991). The aim of this check-list is to provide a preliminary view of the presence and diversity of these fungi in the Iberian Peninsula including the Balearic Islands.