0 Geering, A Scharaschkin, T Teycheney, P.Y 2010 The classification and nomenclature of endogenous viruses of the family Caulimoviridae Virology Division News 123–131 <p>Endogenous members of the family <em>Caulimoviridae</em> have now been found in the genomes of many plant species. Although these sequences are usually fragmented and rearranged and show varying degrees of decay, the genomes of the ancestral viruses can often be reassembled<em> in silico</em>, allowing classification within the existing viral taxonomic framework. In this paper, we describe analyses of endogenous members of the family <em>Caulimoviridae</em> in the genomes of O<em>ryza sativa, Nicotiana tabacum and Solanum spp.</em> and on the basis of phylogeny, genome organization and genetic distance within the <em>pol </em>gene, propose two new virus genera called Orendovirus and<br /> Solendovirus. A system of nomenclature for endogenous virus sequences in plants is also proposed.</p>