Arenga engleri, or the Formosa palm, Taiwan sugar palm, dwarf sugar palm, or Taiwan arenga palm, is a species of flowering plant in the family Arecaceae.

The plant rarely grows more than 10 ft. tall, with a stem diameter of 6in.

The palm is native to Taiwan as well as Japan's Ryukyu Islands.

The fruit of the palm is known to cause a severe allergic reaction.

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