“Pet poisonous” – Toxic parts: entire plant esp seeds Cycas edentata is a species of cycad with a widespread distribution across Southeast Asia. It originally referred only to a single population of Cycas from Calusa Island in Cagayancillo, Philippines. Cycas is the type genus and the only genus recognised in the family Cycadaceae. About 113 species are accepted.Cycas circinalis, a species endemic to India was the first cycad species to be described and was the type of the generic name, Cycas. The best-known Cycas species is Cycas revoluta. The Cycas is a very ancient genus of trees. The group achieved its maximum diversity in the Jurassic and Cretaceous periods, when it was distributed almost worldwide.