Oreochrysum is in the Astereae tribe (includes annuals, biennials, perennials, subshrubs, shrubs, and trees divided into 170 genera and more than 2,800 species), within the Asterales order, and under Plantae Kingdom.
Astereae Tribe: Asterales Order: Plantae Kingdom: Plants within the tribe are present nearly worldwide divided into 170 genera and more than 2,800 species, making it the second-largest tribe in the family behind Senecioneae. Astereae is a tribe of plants in the family Asteraceae that includes annuals, biennials, perennials, subshrubs, shrubs, and trees. 
