1) Family melanthiaceae 2) Liliid monocot family 
Melanthiaceae is a family of flowering perennial herbs native to the Northern Hemisphere. Along with many other lilioid monocots, early authors considered members of this family to belong to the family Liliaceae, in part because both their sepals and petals closely resemble each other and are often large and showy like those of lilies, while some ...
[n] - one of many subfamilies into which some classification systems subdivide the Liliaceae but not widely accepted: includes Aletris
family Melanthiaceae noun one of many subfamilies into which some classification systems subdivide the Liliaceae but not widely accepted: includes Aletris; Narthecium; Veratrum