Definition
Liliopsid is a term that refers to plants belonging to the class Liliopsida, which is an older name for what we now commonly call monocots. These are flowering plants with a single cotyledon (seed leaf). They usually have parallel veins in their leaves and flower parts in multiples of three. Think of lilies, tulips, and grasses. Liliopsid is primarily used in historical contexts of plant classification.ðū