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Family Arecaceae
Pugahan
Caryota mitis Lour.
FISHTAIL PALM

Jiu ye zi

Scientific names Common names
Caryota sabolifera Wall. Bato (Tag.)
Caryota mitis Lour. Pugahan (Tag.)
  Clustering fishtal palm (Engl.)
  Many-stemmed fishtail palm (Engl.)
  Jiu ye zi (Chin.)

Botany
Pugahan differs from other Caryota species in having many suckers and producing clusters of small-sized palms, up to 7 meters tall. Stems are solitary or clustered, slender to massive, with conspicuous nodal rings. Petioles, leaf-sheaths and spathes are scurfily villous. Leaves are 1.2 to 3 meters long; leaflets are obliquely cuneiform, erose amd toothed with acute upper margins. Spadix is scurfy, axillary and pendulous. Male buds are cylindric; male flowers are small, 5 mm long. Fruit is 10 mm in diameter, bluish-black when ripe with a single globose seed.

Distribution
In forests, near streams, at low altitudes.
Cultivated for ornamental pot plants in the Philippines.


Parts utilized
Roots, leaves.

Caution !
• Pericarp contains stinging crystals (raphides, needle-shaped crystals of calcium oxalate). The seeds inside the poisonous fruit are edible after cooking.
• Handling of the berries may cause burning and swelliing of the lips, buccal cavity and throat. May cause redness and swelliing of the eyes and skin irritation. Effects are not long lasting.


Uses
Edibility
Seeds inside the poisonous fruit are edible, as is the cabbage, after cooking.
Stems yield a little starch which the people of Malacca and Borneo use as sago.
Folkloric
No reported folkloric medicinal use in the Philippines.
In Kelantan, juice of the fruit, mixed with bamboo hairs and extract of toad is considered a potent poison.
In Cambodia, soft fibers at the base of the leaf-sheath use for the cauterization of wounds.

Studies
Raphides:
Raphides in the mature fruit of the fishtail palm Caryota mitis were shown to be calcium oxalate monohydrate. On contact with intact human skin, an aqueous suspension of the raphids caused an immediate severe itch sensation, probably a mechanic action of the Ca oxalate needles rather than by penetrating toxin or enzyme action of the raphides.

Availability
Ornamental cultivation.


Last Update May 2011

Photos © Godofredo Stuart / StuartXchange

Additional Sources and Suggested Readings
(1)
Examination of the itch response from the raphides of the fishtail palm Caryota mitis / Diane Snyder et al / Toxicology and Applied Pharmacology • / Volume 48, Issue 2, April 1979, Pages 287-292 / doi:10.1016/0041-008X(79)90035-8


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