Citrocirus Citrus taxonomy

citrocirus according swingle system, hybrid genus, containing hybrids between members of genus citrus , closely related poncirus, includes trifoliate orange, cold hardy plant commonly used citrus rootstock. citrocirus commonly refers citranges hybrids between trifoliate , sweet oranges. molecular investigation suggested fortunella, citrofortunella, poncirus , citrocirus should equivocally included in genus citrus.

according swingle system, trifoliate orange, cold hardy plant commonly used citrus rootstock, not included in genus citrus, in related genus, poncirus. therefore, citrange, hybrid between trifoliate , sweet orange, placed hybrid genus called citrocirus (not valid botanical name). however, molecular investigation suggests poncirus should equivocally included in genus citrus.

citrange – citrus sinensis × poncirus trifoliata – 3 cultivars: troyer , rusk , carrizo .
citrumelo – citrus paradisi × poncirus trifoliata




^ nicolosi et al. (2000)
^ de araújo et al. (2003)
^ nicolosi et al. (2000), de araújo et al. (2003)