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Family Cycadaceae / Zamiaceae
Zamia pumila
Da su tie

Scientific names  Common names
Encephalantos pumilus (L.) Sweet Zamia (Tag.)
Palmifolium debile (Aiton) Kuntze Cardboard palm (Engl.)
Palmifolium integrifolium (L.f. ex Aiton) Kuntze Comfort root (Engl.)
Palmifolium pumilum (L.) Kuntze Coontie (Engl.)
Zamia allison-amourii Millsp. False sago palm (Engl.)
Zamia debilis L.f. ex Aiton Florida Arrowroot (Engl.)
Zamia dentata Voigt Sago zamia (Engl.)
Zamia humilis Voigt  
Zamia latifoliata Prenleloup  
Zamia portoricensis Urb.  
Zamia pumila L.  
Zamia pumila L. is an accepted name The Plant List

Other vernacular names
ARABIC: Zamyah.
CHINESE: Da su tie.
FRENCH: Zamie, Zamier.
GERMAN: Zapfenpalmfarn.
RUSSIAN: Zamiia.

Zamia is a perennial palm-like dioecious plant with simple, sometimes branched, short trunk. Leaves are pinnately compound, crowded on the terminal part of the trunk, up to 1.5 meters long, with a prickly stalk. Leaflets are 10-15 on each side of the rachis, opposite or alternate, oblanceolate, overlapping. Male cones are cylindrical, up to 10 centimeters long, often clustered; female ones are shorter and elongate-ovoid.

Recently introduced.

Yields the toxic glucoside cycasin, found in ten genera of living cycads.
Toxin is present in the roots, seeds and foliage.

- Toxicity. (See Studies and Toxicity below)

Parts utilized
Rhizomes, roots, fruit.


- See Toxicity / Caution below.
- The starchy stems, after treatment to remove the poisonous principle, were a significant part of aboriginal diets.
- Washed roots contain 38% starch and 6% protein, used to make "sofkee," a staple of the traditional Seminole Indian diet and a component in the diet of many indigenous peoples. (1)
- Purely ornamental, without any known folkloric use in the Philippines.
- In folk medicine elsewhere, fruit used in therapeutic shampoos.
- Gum from the stem used for skin ulcers.
- Roots chewed for cough and believed to improve the singing voice.
- Dried powder placed inside socks and shoes to prevent athlete's foot by decrease moisture.
• Extracted starch from root is marketed as "arrowroot" as ingredients to biscuits baby food, chocolate, spaghetti. Also used in cooking as a thickener.

Toxicity / Caution !
• Cycad palms produce three toxins: cycasin, beta-methylamino-L-alanine and an unidentified toxin.
• Cycasin content is a known toxic glucoside, present in 10 living cycad genera.
• Cycasin has shown to be a strong mutagen.
• Toxic to cattle and sheep. In cattle, causes "wobbles" characterized by a weird stance and stumbling gait.

• In humans and livestock, consumption of inadequately detoxified roots or seeds results in two syndromes: a short-onset digestive upset with severe continuous vomiting followed by diarrhea, and a more severe syndrome associated with depression and gradually developing irreversible neurological paralysis. In humans, the symptoms may resemble those of ALS (amyotrophic lateral sclerosis). (1)

Toxic Properties / Cycasin:
The toxic glucoside cycasin is found ubiquitously and exclusively in the 10 general of living cycads and is present in root, seeds and foliage. In the GIT, cycasin loses a glucose molecule to become the physiologically active methylazoxymethanol. The toxin must be removed from the roots and seeds by grating and washing before it becomes safe for human consumption. Acute consumption of cycasin in humans and animals can produce liver damage. Chronic exposure of experimental animals produces tumors in various body sites. Studies have shown it to be a very strong mutagen. Chronic long-term low-level exposure can cause permanent CNS damage. Beta-N-methyl-alpha-B-diaminoprorionic acid, the neurotoxic compound believed to cause neurological symptoms in man, has been isolated from seeds. (1)

Ornamental cultivation.

Last Update May 2015

Photo © Godofredo Stuart / StuartXchange

Additional Sources and Suggested Readings
Zamia pumila / Poisonous Plants and Animals of Florida and the Caribbean / David W. Nellis
/ Google Books
Toxicology Brief: Cycad toxicosis in dogs / Hany Youssef, BVSc, DVM, MS / Veterinary Medicine
Zamia pumila / Common names / ZipCodeZoo
Zamia pumila / Synonyms / The Plant List

It is not uncommon for links on studies/sources to change. Copying and pasting the information on the search window or using the DOI (if available) will often redirect to the new link page.

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