Hydrocotyle sibthorpioides is a small species of flowering plant native to southeastern Asia. It is also referred to as lawn marshpennywort. It is a dicot, formerly placed in the family Apiaceae, but more recently shown to belong in the Araliaceae. It grows in abundance when the conditions are right. Hydrocotyle sibthorpioides originated in southeastern Asia, but is slowly spreading in the United States, along with other places around the world. It can grow in a wide variety of habitats. It has been used for medicinal purposes in Asia and is also common in the aquarium trade.

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