Cycas circinalis
Southern India and Sri Lanka.·Arborescent
Cycas circinalis, commonly known as the queen sago, is a cycad species native to southern India and Sri Lanka. It is characterized by its distinctive palm-like appearance with pinnate leaves and is widely cultivated for ornamental purposes. Historically, its seeds have been processed for food after careful detoxification.
Key Facts
- ›Native to southern India and Sri Lanka.
- ›Seeds are poisonous and require extensive soaking to be made edible.
- ›Processed seeds are ground into flour for various food preparations.
- ›Widely cultivated in Hawaii for ornamental landscaping and interior design.
- ›Leaflets contain biflavonoids like tetrahydroisoginkgetin.
- ›Historically, its potential link to lytico-bodig disease was investigated but later attributed to a separate species.
Queen Sago
India, Sri Lanka
Pinnate Leaves
Poisonous, Require Extensive Soaking To Remove Toxins, Can Be Dried and Ground Into Flour
Ornamental, Food
About Cycas circinalis
Cycas circinalis: The Queen Sago
Cycas circinalis, commonly referred to as the queen sago, is a species of cycad notable for its native range in southern India and Sri Lanka. While the species name was historically applied to similar cycads across Southeast Asia, modern botanical understanding recognizes distinct species in regions like Indonesia, New Guinea, and the Philippines. The queen sago is widely cultivated, particularly in Hawaii, admired for its ornamental value in both landscape design and interior spaces.
Botanical Characteristics and Uses
The queen sago is characterized by its palm-like form, featuring pinnate leaves. A significant aspect of its biology is the toxicity of its seeds. These seeds contain potent poisons that must be meticulously removed through a process of extensive soaking in water, often requiring a minimum of five changes of water to ensure safety. Following this detoxification, the seeds are dried and ground into flour, which has historically been used to prepare various food items such as tortillas, tamales, soups, and porridges.
Historical Context and Chemistry
In the past, Cycas circinalis was investigated for a potential link to the degenerative lytico-bodig disease prevalent on the island of Guam. However, subsequent research identified the cycad native to Guam as a distinct species, Cycas micronesica, thus clarifying that Cycas circinalis was not the cause. Chemically, the leaflets of Cycas circinalis have been found to contain biflavonoids, including a compound known as (2S, 2′′S)-2,3,2′′,3′′-tetrahydro-4′,4′′′-di-O-methylamentoflavone, also referred to as tetrahydroisoginkgetin.
Source: Wikipedia ↗
Frequently Asked Questions
Where is Cycas circinalis native to?
Cycas circinalis is native to southern India and Sri Lanka. While the species name was previously applied more broadly, similar cycads in Southeast Asia are now recognized as distinct species.
Are the seeds of Cycas circinalis edible?
The seeds of Cycas circinalis are poisonous and can be dangerous if not properly prepared. They require a minimum of five soakings in water to remove the potent toxins before they can be safely ground into flour for consumption.
What is Cycas circinalis used for?
Cycas circinalis is widely cultivated for its aesthetic appeal in landscaping and interiors. Its seeds, after detoxification, are processed into flour used for making tortillas, tamales, soup, and porridge.
What are the chemical compounds found in Cycas circinalis?
The leaflets of Cycas circinalis contain biflavonoids. One such compound identified is (2S, 2′′S)-2,3,2′′,3′′-tetrahydro-4′,4′′′-di-O-methylamentoflavone, also known as tetrahydroisoginkgetin.
Has Cycas circinalis been linked to any diseases?
The plant was once thought to be linked with the degenerative disease lytico-bodig on Guam. However, this connection has since been disproven, as the cycad native to Guam is now identified as a separate species.
Related Cycad species
Cycas armstrongii
Cycas armstrongii is a species of cycad native to the Northern Territory of Australia, found across the Top End region. It is characterized by its relatively tall stems and unique deciduous leaves that shed during the dry season, earning it the nickname "fire fern." This species is notably abundant and highly tolerant of the annual grass fires common in its habitat.
Cycas arnhemica
Cycas arnhemica is a species of cycad native to Arnhem Land in Australia's Northern Territory. It is characterized by erect stems reaching up to 2.5 meters and pinnate leaves with numerous leaflets. This species is commonly found in eucalyptus woodlands and savanna grasslands, with a restricted distribution around specific river systems.
Cycas bougainvilleana
Cycas bougainvilleana is a species of cycad native to the islands northeast of Papua New Guinea, including New Britain, the Bismarck Archipelago, and the Solomon Islands. It typically grows on or near the coast in calcareous coral sand dunes and adjacent forests. Botanically, it is characterized by erect stems up to 5 meters tall, crowned with numerous long, pinnate leaves, and distinct reproductive cones.