Cycas circinalis, also known as the queen sago, is a species of cycad known in the wild only from southern India.
The seeds are quite large and are brown or yellow and are displayed on the feather-like seed-bearing leaves. The seeds have a spongy layer that allows them to float on water. As a slow growing plant, the seed can take from 6–18 months to germinate. Queen Sago is pollinated by a species of weevil, which finds protection in the plant's cone and seed-bearing leaves.
Cycas circinalis is now known to be an Indian endemic, restricted to the Western Ghats, in the states of Kerala, Karnataka, Tamil Nadu, and the south of Maharashtra.