TaxonomyDifferent authorities place Agrostocrinum in different families. Australian botanists are including it in Phormiaceae. Phormiaceae is sometimes included in Hemerocallidaceae (or alternatively as Hemerocallidoideae) and that family is optionally included in Xanthorrhoeaceae by Apg2.
Agrostocrinum is also sometimes included in Anthericaceae but that genus is optionally included by Apg2 in Agavaceae or Asparagaceae.
Agrostocrinum is related to the genus Dianella.