Fern Young Leaf Showing Circinate

- Vernation refers to the formation of new leaves or fronds on a plant.
- Circinate Vernation is a distinguishing characteristic of ferns, it’s how most fern
fronds emerge.
- The fern grows in a tightly coiled manner such that the growing tip is kept in the
center protecting the apical meristem.
- As the fern matures, new leaves emerge by uncoiling from the base towards the apex.
- Example: Pinnate leaves of Cycas show circinate vernation.