Liliiflorae was a term introduced by Carl Adolph Agardh in 1825 as a higher order to include the Liliaceae (which he called Coronariae) and related families. Argadh, together with De Candolle developed the concept of ordered botanical ranks, in this case grouping together De Jussieu's (1789) recently defined collections of genera (families) into higher order groupings (orders). However, at the time what are now known as families were referred to by the term "ordo", and in Argadh's nomenclature these were grouped into "classes".