kalanchoe top-spotting virus kalanchoe top-spotting virus kalanchoe top-spotting virus (ktsv) is a plant pathogenic virus of the family caulimoviridae. kalanchoe top-spotting virus virus classification (unranked): virus realm: riboviria kingdom: pararnavirae phylum: artverviricota class: revtraviricetes order: ortervirales family: caulimoviridae genus: badnavirus species: kalanchoe top-spotting virus synonyms kalanchoe 'commelina yellow mottle badnavirus'