First intergeneric hybrids within the tribe Anthemideae Cass. III. Chrysanthemum indicum L. Des Moul. × Opisthopappus taihangensis (Ling) Shih

► Intergeneric hybrid was obtained between C. indicum and O. taihangensis. ► The hybrids' hybridity was identified by morphology, chromosome counting and GISH. ► Genomes of D. indicum and O. taihangensis are distantly related to one another.