|Cycas circinalis in Kerala|
| Cycas circinalis|
Cycas circinalis, also known as the queen sago, is a species of cycad known in the wild only from southern India.
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Cycas circinalis is the only gymnosperm species found among native Sri Lankan flora.
- Male cone, new
- Male cone, old
- Young shoots
- Collected seeds
Use as food
The seed is poisonous. The potent poison in the seeds is removed by soaking them in water. Water from the first seed-soaking will kill birds, goats, sheep and hogs. Water from the following soakings is said to be harmless.
The plant was thought to be linked with the degenerative disease lytico-bodig on the island of Guam; however, the cycad native to Guam has since been recognised as a separate species, Cycas micronesica, by K.D. Hill in 1994.
Leaflets of C. circinalis contain biflavonoids such as (2S, 2′′S)-2,3,2′′,3′′-tetrahydro-4′,4′′′-di-O-methylamentoflavone (tetrahydroisoginkgetin).
- Iwata, Ruth Y.; Rauch, Fred D. (October 1988). "King and Queen Sago". University of Hawaii. Retrieved September 24, 2012.
- Phytochemical Investigation of Cycas circinalis and Cycas revoluta Leaflets: Moderately Active Antibacterial Biflavonoids. Abeer Moawad, Mona Hetta, Jordan K. Zjawiony, Melissa R. Jacob, Mohamed Hifnawy, Jannie P. J. Marais and Daneel Ferreira, Planta Med., 2010, 76(8), pages 796-802, doi:10.1055/s-0029-1240743
- Floridata: Cycas circinalis
- EDIS: Queen sago
- USDA Plants Profile
- University of Hawai'i at Manoa: King and Queen Sago