(Cycas circinalis)
Cycas circinalis, also known as the queen sago, is a species of cycad known in the wild only from southern India. Cycas circinalis is the only gymnosperm species found among native Sri Lankan flora. C. circinallis is endemic to southern India and Sri Lanka, but the species name was formerly widely used for similar cycads in Southeast Asia, which leads to confusion in modern sources. The specimens described as "C. circinallis" in Indonesia and New Guinea is now recognized as Cycas rumphii; while the taxon formerly described as the subspecies C. circinallis ssp. riuminiana from the Philippines is now regarded as a separate species, Cycas riuminiana.