1. Their seeds have only one cotyledon.
2. Leaf veins are parallel.
3. Flowers trimerous i.e. the number of petals in a flower is 3 or a multiple of 3.
4. root root.
5. The location of the carpels is apical and the embryo is lateral.
6. Seed coat and fruit coat are attached together.
7. The flowers are incomplete and the perianth remains.
8. The vascular bundles of the stem are scattered. Cambium tissue is absent.
9. Secondary growth does not occur.
10. Pollen monocolpate (one grooved).