The old name for family is Gramineae . The staminate spike is directly above the pistillate spike. Unisexual and monoecious . Perianth reduced to bristles , stamens 2-5, carpel 1. Native with 3 petals and sepals is Trillium .
Styles are often winged and petaloid.
Inferior ovary . Bracteate, often resupinate, bisexual, zygomorphic . Inferior ovary . Capsule, seeds are tiny and require a fungal relationship to germinate. One of the largest families, mostly in the tropics.