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Queensland Health
Health Services > Queensland Poisons Information Centre

Plants and mushrooms

Cycads

Cycad plantfruit of the Cycad together with a hat for size comparison close up of fruit of the Cycad close up of fruit of the Cycad
Category 2 toxicity iconCategory 4 toxicity icon

 Common name   Cycads
 Botanical name   Cycas species, most commonly Cycas revoluta, Cycas micronesica, Cycas megacarpa
 Other common names   Tree zamia, Zamia palm, Sago palm
Family   Cycadaceae
 General description   Palm-like plants to 7m high with erect trunks and a crown of leathery leaves. Both male and female plants occur.
Flowers   The cones are the reproductive parts of the plant.
Leaves   The leaves are shiny dark green and have numerous strap-shaped leaflets that are distinguished by a prominent midrib while lacking any obvious secondary veins. Leaves measure 0.6-1.7m long, and leaflets 11-27cm long and 0.4-0.8cm wide.
 Fruit/Berries   The fruit are 2-3.5cm long and 1.5-2.5cm wide, bright orange to red or sometimes yellowish in colour, with a fleshy, soft seed coat.
Other   The sap is clear.
Symptoms   If eaten, the raw fruit may cause headache and severe gastro-intestinal irritation including stomach cramps, nausea, vomiting and diarrhoea. In a very few severe cases, liver damage, coma and death have been reported. The male cone has a fruity odour when releasing pollen and this has been recorded as causing respiratory distress.
Toxicity category   2, 4
Warning   Seek urgent medical attention for all ingestions.


Last Updated: 24 August 2010
Last Reviewed: 31 October 2008