A prefix meaning again or back.

A response by a plant to a stimulus or environmental factor.

The floral axis or base that supports floral parts.

Bent downward or backward.

Occurring repeatedly; in botany, it can mean curving back or returning toward the origin.

Curved downward or backward away from the axis.

Turning or bending backward, often used for sepals or petals.

A legally protected name of a plant cultivar that is officially recorded.

Covered with or bearing small, thin, brownish scales called ramenta.

A small, thin, scale-like structure, usually brown, found on ferns and some other plants.