Dischidia major

Dischidia major (Synonym Dischidia rafflesiana), the Malayan urn vine, is a plant in the genus Dischidia. They carry modified leaves, offering accommodation to ants, including those of the family Dolichoderinae, (most commonly Iridomyrmex myrmecodiae) and in return gain some sustenance from increased carbon dioxide and nitrogen levels, and a degree of protection from noxious animals and plants. This mutualism trait, known as myrmecophily, is widespread across the plant world and clearly carries considerable benefits for both ants and plant. Dischidia major twines around the branches and trunks of trees, having a preference for those that are decaying. It produces both circular succulent leaves of about 2 cm diameter, and hollow, pouch-like 12 cm long leaves, reminiscent of the fruits of Araujia sericifera, a related species. These modified leaves, pitchers or ascidia, are purplish and richly dotted with stomata on the inner surface, and have an opening at the top end near the stalk. Or......read more on Wikipedia.