Moonia belongs to the tribe Coreopsideae under the family Asteraceae which includes over 32,000 currently accepted species, in over 1,900 genera (list) in 13 subfamilies.
Tribe: Coreopsideae Family: Asteraceae The family includes over 32,000 currently accepted species, in over 1,900 genera (list) in 13 subfamilies. 
