Cycads are seed plants typically characterized by a stout and woody trunk with a crown of large, hard and stiff, evergreen leaves.

Families in the order Cycadales of plants

Stangeriaceae - Stangeriaceae is the smallest family of cycads, both in number of living and fossil species.

Zamiaceae - The Zamiaceae are a family of cycads that are superficially palm or fern-like.

Cycadaceae - Cycas is the type genus and the only genus currently recognised in the cycad family Cycadaceae.