Angiosperm

The most recently evolved and the largest group of plants whose reproductive organs are in their flowers (flowering plants). A superclass in the sperm plants (Spermatophyta) division belonging to the vascular plants (Tracheophyta) phylum of the plant kingdom. They are divided into two subclasses: Dicots (Magnoliopsida such as magnolia, dandelion, roses, violet) and Monocots (Liliopsida such as lilly, iris, orchid, grasses). Their ovules are enclosed in the carpel and pollen travels through the pollen tube to reach it. Angiosperms evolved in the Cretaceous era together with the Mammals.